VTech Telephone VT 4121 User Manual

INTRODUCTION  
1. Becoming Familiar WithYour Speakerphone  
Congratulations! You have purchased one of the best performing 4-line speaker-  
phones on the market!  
This manual is designed to familiarize you with the VT 4121.To get the most use out  
of your VT 4121, we strongly recommend you read the manual before using your  
phone.  
DISPLAY  
CALLER ID BUTTONS  
SPEED DIAL BUTTONS  
FUNCTION BUTTONS  
LINE BUTTONS  
VOLUME UP & DOWN BUTTON  
SPEAKERPHONE BUTTON  
DIAL PAD BUTTONS  
Display and Function Buttons:  
and  
keys  
ERASE  
Enables you to erase a programmed  
setting.  
Allow you to scan through the caller  
ID list.  
CID  
Allows you to review calls in caller  
ID memory.  
DND  
Used to place your telephone in Do  
Not Disturb mode.  
END  
Used to exit the programming mode.  
DIAL  
Used to dial a telephone number  
from the caller ID list.  
1
 
INTRODUCTION  
Caller ID Log  
Four (4) CO Lines with Line Status  
Indication  
Up to 99 telephone numbers will be  
stored in the Caller ID Log for re-  
view, redial, save to speed dial or  
deletion.  
You can connect up to 4 lines. The  
lamps will light to indicate the sta-  
tus of the lines.  
Message Waiting Indicator  
Line-In-Use Detection of Other Con-  
nected Telephones ( fax, modem,  
etc.)  
Message LED will indicate presence  
of network based voice messages.  
(You will need to subscribe to the  
Voice Messaging service provided  
by your local telephone company.)  
A line lamp will light to indicate that  
the line is busy. This helps to pre-  
vent accidental line pick-up interrup-  
tions.  
Desktop Data Port  
Modular desktop connection for  
single line devices to line four (mo-  
dem, fax, answering machine, etc.)  
Automatic Line Selection  
You can designate a line to be au-  
tomatically accessed whenever you  
lift the handset or press the speak-  
erphone button.  
Headset Jack  
2.5 mm jack for connecting an op-  
tional telephone headset for hands  
free communications.  
Distinctive Ringing  
Choose from four (4) unique ring  
tones to easily identify calls ringing  
at your telephone.  
OVER THE EAR HEADSET  
HEADSET JACK  
Delayed Ringing  
You can delay the ringing of a line  
for overflow call coverage.  
Adjustable Ringer, Receive and  
Speaker Volume Levels  
You can adjust the volume levels to  
suit your own preferences.  
Intercom with Direct Station Select  
Buttons  
Handsfree Speakerphone  
This feature enables you to conduct  
telephone conversations handsfree.  
You can call another extension with  
the touch of one button.  
Supertwist 2 x 16 Dot Matrix Liquid  
Crystal Display  
Intercom Call Pick-Up  
Any telephone can answer an inter-  
com call ringing at another exten-  
sion.  
The display shows useful informa-  
tion such as the current time, and  
date, as well as a number dialed and  
the call duration.  
3
 
INTRODUCTION  
Page  
dial the last number dialed from the  
telephone (up to 32 digits) with the  
touch of one button.  
You can voice page all extensions  
or perform a single page to a tele-  
phone.Meet-Me-Answer allows you  
to answer an All Page from any tele-  
phone. Automatic Mute may be pro-  
grammed to prevent sounds in your  
room from being heard while some-  
one makes a single page to you.  
Speed Dialing  
You can store up to eighteen (18)  
frequently dialed telephone number  
which can be dialed by pressing one  
button.  
Hold with Reminder  
Mute (Enter)  
• While on a call, if you want to have  
When you place a call on Hold you  
will hear a tone every thirty (30) sec-  
onds to remind you that the call is  
on Hold.  
a private conversation with some-  
one in the room, you can mute the  
telephone’s microphone so the dis-  
tant party cannot hear you.The En-  
ter feature is used during program-  
ming.  
Call Privacy with Release  
When you are using an outside line,  
another person cannot join your  
conversation on that line unless you  
release Call Privacy.  
Do Not Disturb  
You can prevent interruptions from  
incoming calls, intercom calls, and  
pages by activating Do Not Disturb.  
Conference  
You can establish a 3-way conver-  
sation with any two outside parties  
or with one outside party and one  
other extension.  
Pause  
Some telephone systems require  
you to dial an access code (i.e. 8 or  
9) prior to dialing an outside num-  
ber. A pause can be inserted after  
the access code in the dialing se-  
quence.  
Call Forward to Other Speaker-  
phones  
You can forward your calls to an-  
other speakerphone (VT 4121 only).  
Flash  
• The telephone will send an elec-  
Call Transfer  
You can transfer a call to another  
extension.  
tronic switch-hook signal for use  
with special services, such as call  
waiting, provided by your telephone  
company.  
Auto Busy Redial  
The telephone will automatically re-  
dial the last number dialed from the  
telephone, up to ten (10) attempts.  
This feature is useful when you are  
trying to call a busy telephone num-  
ber.  
Tone/Pulse Dialing  
The telephone will operate with ei-  
ther tone (DTMF) or pulse (rotary )  
dialing service.  
Hearing Aid Compatible  
Last Number Redial  
The telephone will automatically re-  
This telephone will support hear-  
ing aids.  
4
 
INTRODUCTION  
4. Parts Check list  
5. AC power adapter  
6. Two long line cords  
7. Desk/Wall mount bracket  
8. Over the ear headset  
9. Manual  
1. Handset  
2. B/U  
3. 10 foot handset cord  
4. Wall mounting screws and anchors  
Handset  
Base Unit  
10 Foot Handset Cord  
Wall Mounting  
Screws & Anchors  
Two long Line Cords  
(for desk mounting)  
AC Power Adapter  
USER’S MANUAL  
VT 4121  
Operation Manual  
Desk/Wall Mount Bracket  
Over the Ear Headset  
5
 
FCC REGULATIONS  
This equipment complies with Parts 15  
and 68 of the Federal Communications  
Commission (FCC) rules for the United  
States. It also complies with regula-  
tions RSS210 and CS-03 of Industry  
and Science Canada. Operation is  
subject to the following two conditions:  
FCC Part 15  
Warning: Changes or modifications to  
this unit not expressly approved by the  
party responsible for compliances could  
void the user's authority to operate the  
equipment.  
The equipment has been tested and  
found to comply with part 15 of the  
FCC rules. These limits are designed  
to provide reasonable protection  
against harmful interference in a resi-  
dential installation. This equipment  
generates, uses and can radiate radio  
frequency energy and, if not installed  
and used in accordance with the  
instructions, may cause harmful inter-  
ference to radio communications.  
However, there is no guarantee that  
interference will not occur in a particu-  
lar installation. If this equipment does  
cause harmful interference to radio or  
television reception, which can be  
determined by turning the equipment  
off and on, the user is encouraged to  
try and correct the interference by one  
or more of the following measures:  
1. This device may not cause interfer-  
ence, and  
2. This device must accept any inter-  
ference, including interference that  
may cause undesired operation of  
the device.  
A label is located on the underside of  
the base unit containing either the  
FCC registration number and Ringer  
Equivalence Number (REN) or the IC  
registration number and Load Number.  
You must, upon request, provide this  
information to your local telephone  
company.  
This equipment is compatible with  
inductively coupled hearing aids.  
Should you experience trouble with  
this telephone equipment, please con-  
tact:  
Reorient or relocate the receiving  
antenna.  
• Increase the separation between the  
equipment and receiver.  
VTECH COMMUNICATIONS  
SERVICE DEPT. at 1-800-595-9511.  
Connect the equipment into an  
outlet or on a circuit different from  
that to which the receiver is  
connected.  
Consult the dealer or an  
experienced radio/TV technician for  
help.  
For repair/warranty information. The  
telephone company may ask you to  
disconnect this equipment from the  
line network until the problem has  
been corrected.  
6
 
FCC REGULATIONS  
FCC Part 68  
This equipment may not be used on  
coin service provided by the phone  
company or Party Lines.  
The FCC requires that you connect  
your cordless telephone to the nation-  
wide telephone network through a  
modular telephone jack (USOC RJ11C,  
RJ11W or RJ14).  
The REN is useful in determining the  
number of devices you may connect to  
your telephone line and still enable the  
devices to ring when you receive a call.  
The general rule is that the REN value  
should not exceed 5.0A total; however,  
contact your local telephone company  
for the specific number in your area.  
Your telephone company may discon-  
tinue your service if your equipment  
causes harm to the telephone network.  
They will notify you in advance of  
disconnection, if possible.  
During  
notification, you will be informed of  
your right to file a complaint with the  
FCC.  
Occasionally, your telephone company  
may make changes in its facilities,  
equipment, operation, or procedures  
that could affect the operation of your  
equipment. If so, you will be given  
advance notice of the change to give  
you an opportunity to maintain uninter-  
rupted service.  
The base unit contains no user ser-  
viceable parts. The handset contains  
a user replaceable battery pack.  
If it is determined that your telephone  
equipment is malfunctioning, the FCC  
requires that it not be used and that it  
be unplugged from the modular jack  
until the problem has been corrected.  
Repairs to this telephone equipment  
can only be made by the manufacturer  
or its authorized agents or by others  
who may be authorized by the FCC.  
For repair procedures, follow the in-  
structions outlined under the VTECH  
Limited Warranty.  
7
 
IMPORTANT SAFETY INSTRUCTIONS  
When using your telephone equip-  
ment, basic safety precautions should  
always be followed to reduce the risk  
of fire, electric shock and injury to  
persons, including the following:  
your dealer or local power company.  
8. Do not allow anything to rest on the  
power cord. Do not locate this  
product where the cord will be  
abused by persons walking on it.  
1. Read and understand all  
instructions.  
9. Never push objects of any kind into  
this product through cabinet slots  
as they may touch dangerous  
voltage points or short out parts  
that could result in a risk of fire or  
electric shock. Never spill liquid of  
any kind on the product.  
2. Follow all warnings and instructions  
marked on the product.  
3. Unplug this product from the wall  
outlet before cleaning. Do not use  
liquid cleaners or aerosol cleaners.  
Use a damp cloth for cleaning.  
10. To reduce the risk of electric shock,  
do not disassemble this product,  
but take it to a VTech authorized  
4. Do not use this product near water  
(for example, near a bath tub,  
kitchen sink, or swimming pool).  
service facility.  
Opening or  
removing cabinet parts other than  
specified access doors may expose  
you to dangerous voltages or other  
risks. Incorrect reassembling can  
cause electric shock when the  
appliance is subsequently used.  
5. Do not place this product on an  
unstable cart, stand, or table. The  
product may fall, causing serious  
damage to the product.  
6. Slots and openings in the cabinet  
and the back or bottom are provided  
for ventilation. To protect it from  
overheating, these openings must  
not be blocked by placing the  
product on the bed, sofa, rug, or  
other similar surface. This product  
should never be placed near or  
over a radiator or heat register.  
This product should not be placed  
in a built-in installation where proper  
ventilation is not provided.  
11. Do not overload wall outlets and  
extension cords as this can result  
in the risk of fire or electric shock.  
12. Unplug this product from the wall  
outlet and refer servicing to a  
VTech authorized service facility  
under the following conditions:  
a. When the power supply cord or  
plug is damaged or frayed.  
b. If liquid has been spilled into  
the product.  
7. This product should be operated  
only from the type of power source  
indicated on the marking label. If  
you are not sure of the type of  
power supply to your home, consult  
c. If the product has been ex-  
posed to rain or water.  
8
 
IMPORTANT SAFETY INSTRUCTIONS  
d. If the product does not operate  
normally by following the oper-  
ating instructions. Adjust only  
those controls that are covered  
by the operating instructions,  
because improper adjustment  
of other controls may result in  
damage and will often require  
extensive work by a VTech  
authorized technician to restore  
the product to normal opera-  
tion.  
f. If the product exhibits a distinct  
change in performance.  
13. Avoid using a telephone (other  
than a cordless type) during an  
electrical storm. There may be a  
remote risk of electric shock from  
lighting.  
14. Do not use the telephone to report  
a gas leak in the vicinity of the leak.  
e. If the product has been dropped  
and the cabinet has been dam-  
aged.  
SAVE THESE INSTRUCTIONS  
9
 
INSTALLATION  
2. Installing the Speakerphone  
1. Site Planning  
You can choose from two (2) installa-  
tion options:  
Select a location where the speaker-  
phone will not interfere with daily ac-  
tivities. You can choose to connect the  
speakerphone to as many as four tele-  
phone lines.The speakerphone can be  
connected to two 2-line (RJ14C) modu-  
lar telephone jacks to accommodate all  
four lines.The speakerphone is factory-  
programmed for intercom extension  
number 12.  
Locate the telephone on a desk or  
tabletop, or  
Mount the telephone on the wall.  
2.1 Desk/Tabletop Mounting  
To have better viewing angle, you could  
choose to install the desk/wall mount  
bracket by squeezing the side tabs on  
the thicker end of the bracket, insert  
them into their respective slots.  
When the telephone is first installed, the  
display will show a message to check  
the clock and the extension ID. Refer to  
the Programming section to set the ex-  
tension number.  
a. Position the telephone in the desired  
location on a tabletop or desk.  
b. Plug one of the long line cords into  
the L1/2 jack at the back of the tele-  
phone. Plug the other long line cord  
into the L3/4 jack.  
IMPORTANT: For all system features  
to operate correctly, ev-  
ery speakerphone,  
must be connected to  
the same Line 2 wiring.  
They do not need to be  
located in the same  
area.  
c. Plug the AC adaptor power cord into  
the jack at the back of the telephone.  
Note: Use only the AC power adaptor  
provided with the telephone.  
L1/L2 TELEPHONE JACK  
L3/L4 TELEPHONE JACK  
ELECTRICAL OUTLET  
10  
 
INSTALLATION  
d. Insert one end of the handset cord  
into the handset and the other end  
into the left side of the telephone.  
Place the handset in the telephone  
cradle.  
e. Plug the two long line cords into the  
wall jacks. Double check that you  
have not reversed the L1/L2 and  
L3/L4 cord connections.  
the wall.  
1. Insert the two (2) screws and an-  
choring devices into the wall 3-5/8  
inches apart vertically, allowing  
approximately 3/16 inch between  
the wall and screw heads for mount-  
ing the telephone. Ensure that the  
screws are secure.  
f. Plug the AC power cord adaptor into  
a standard 120V AC wall outlet.The  
display shows “Check Clock & ID “.  
Refer to the programming section to  
program the clock and change the  
extension ID.  
2. Turn the speakerphone over to view  
the bottom.  
g. Ensure that all cords are positioned  
to prevent tripping and rubbing  
which could create a potential elec-  
trical hazard.  
2.2 Wall Mounting  
3. If you have already installed the  
desk/wall mount bracket in desk  
mode, please remove the desk/ wall  
mount bracket by gently moving one  
tab at a time while pulling the peg  
out of the tab hole.  
You will want to ensure the following:  
The location where the telephone  
will be mounted should be away  
from electrical cables, pipes, or  
other items which may be punctured  
when the screws are inserted into  
the wall.  
4. Rotate the bracket and install it in  
the wall mounting position by align-  
ing the four holes on the bracket with  
the four hooks on the bottom of the  
telephone.  
The wall surface should be capable  
of supporting the telephone weight.  
Use the screws and anchoring de-  
vices provided with the telephone.  
The telephone is located near an  
AC outlet.  
Two (2) long line cords are provide to  
meet various wall mounting conditions.  
A template is provided at the back of  
this manual to assist you with the in-  
stallation of the telephone directly onto  
11  
 
INSTALLATION  
5. Slide the bracket down onto the  
hooks and snap into place.  
and turning to position it in the wall  
mount mode.  
6. Plug one of the line cord into the L1/  
L2 jack at the back of the telephone.  
Plug the other line cord into the L3/  
L4 jack.  
10. Insert one end of the handset cord  
into the handset and the other end  
into the left side of the telephone.  
Hang the handset in the telephone  
cradle.  
7. Plug the AC adapter power cord into  
the bottom of the telephone. Use  
only the AC power adapter provided  
with the telephone.  
11. Plug the two line cords into the wall  
jacks. Double check that you have  
not reversed the L1/L2 and L3/L4  
cord connections.  
8. Position the telephone on the two  
screws in the wall and slide the tele-  
phone downward to secure it to the  
wall.  
12. Plug the AC power cord adapter into  
a standard 120V AC wall outlet. The  
display shows “ Check Clock & ID”.  
Refer to the programming section to  
program the clock and change the  
extension ID.  
9. Rotate the handset tab by lifting up  
13. Ensure that all cords are positioned  
to prevent tripping and rubbing  
which could create a potential elec-  
trical hazard.  
12  
 
PROGRAMMING  
1. General Programming Guidelines  
Note 3: If you are already in the pro-  
gramming mode all the fea-  
tures can be programmed  
consecutively without press-  
ing PROGRAM again.  
Press PROGRAM to enter the pro-  
gramming mode. The MUTE (EN-  
TER) will light steady. The display  
will show:  
2. Extension Number  
Default setting: 12  
Extension Number Range: 11-22  
The VOLUME buttons are used  
for scrolling through the program-  
ming selections.  
Each Speakerphone must have a  
unique extension number pro-  
grammed. It is highly recommended  
that you assign a new extension  
number at the time of installation.  
The MUTE (ENTER) button acts as  
“enter”.  
You will hear a continuous alerting tone  
if two speakerphones are assigned the  
same extension number.  
Press HOLD to return to the previ-  
ous main menu.  
Pressing a SPEED DIAL button al-  
lows you to program that particular  
button.  
1. Press PROGRAM.  
2. Press  
shows:  
VOLUME. The display  
Press ERASE to erase a previously  
programmed setting.  
Press END to exit the programming  
mode.  
3. Press MUTE (ENTER).  
4. Press VOLUME  
to select ex-  
Note1: A button must be pressed  
within about 30 seconds or the  
programming mode will be au-  
tomatically cancelled.  
tension number.  
5. Press MUTE (ENTER) to save.  
3. Tone/Pulse Dialing  
Note 2: When a feature has been suc-  
cessfully programmed, you  
will hear a single confirmation  
tone and the display will show  
“OK!”. If the feature has not  
been programmed correctly,  
you will hear a double tone  
and the display will show  
“Fail!”.  
Default Setting: Tone  
If you have tone dialing service from  
your telephone company, you will want  
to ensure that your telephone is set for  
tone dialing mode.  
1. Press PROGRAM.  
2. Press VOLUME until the display  
shows:  
13  
 
PROGRAMMING  
9. Press MUTE (ENTER) to select the  
appropriate day and proceed to pro-  
gramming the clock for AM/PM or  
24-Hour.  
3. Press MUTE (ENTER).The display  
10. Press  
VOLUME  
to switch be-  
shows:  
tween the three choices.  
11. Press MUTE (ENTER) to select the  
appropriate setting and proceed to  
programming the hour.  
12. Press  
VOLUME  
to view the  
4. Press VOLUME  
to select the  
choice for the hour.  
dialing mode.  
13. Press MUTE (ENTER) to select the  
appropriate hour and proceed to  
programming the minutes.  
5. Press MUTE (ENTER) to save.  
4. Date and Time  
14. Press  
VOLUME  
to view the  
choice for the minutes.  
Default setting: Jan 01 FR 1:00A  
15. Press MUTE (ENTER) to select the  
appropriate minutes.You will hear a  
single confirmation tone and the dis-  
play will show the new date and  
time.  
You can program the time in either 12-  
hour or 24-hour (military) format.  
1. Press PROGRAM.  
5. CO/PBX Line Ringing  
2. Press VOLUME until the display  
shows:  
Default Setting: Enabled  
You can program the ringer for each  
central office/PBX line(1-4).If you do not  
want the line(s) to ring at your tele-  
phone, choose the “OFF” setting for  
each line.  
3. Press MUTE (ENTER) to program  
the month.  
4. Press  
months.  
VOLUME  
to view the  
1. Press PROGRAM.  
5. Press MUTE (ENTER) to select the  
appropriate month and proceed to  
programming the date.  
2. Press VOLUME until the display  
shows:  
6. Press  
VOLUME  
to view the  
choice for the date.  
7. Press MUTE (ENTER) to select the  
appropriate date and proceed to  
programming the day of the week.  
3. Press MUTE (ENTER) .The display  
shows:  
8. Press  
VOLUME  
to view the  
choices for the day.  
14  
 
PROGRAMMING  
4. Press MUTE (ENTER) again. The  
Range: Disable, 2 seconds to 30 sec-  
onds (2 second increments)  
display shows:  
You may choose to have the CO line  
ringing delayed for overflow and caller  
ID applications.  
5. Press VOLUME  
to choose the  
1. Press PROGRAM.  
setting.  
6. Press MUTE (ENTER).  
2. Press VOLUME until the display  
shows:  
To continue programming the remain-  
ing lines press VOLUME  
and then  
perform steps 4-6.  
3. Press MUTE (ENTER). The display  
6. CO Line Ring Tone  
shows:  
Default Setting:  
Range: 1-4  
1
You can choose one of four different  
ringing tones for your telephone. The  
selection chosen will apply to all four  
CO lines on your telephone.  
4. Press  
VOLUME  
to select the  
delay time between 2 seconds and  
30 seconds (in 2 second incre-  
ments).  
5. Press MUTE (ENTER).  
1. Press PROGRAM.  
2. Press VOLUME until the display  
8. COTrunk Connection  
shows:  
Default Setting: All Lines Connected  
Your telephone can detect another tele-  
phone, facsimile, or modem that is in-  
use on one or more of the CO lines.This  
privacy feature will prevent accidental  
instruction by another VT4121 speak-  
erphone user. The “Line-In-Use” circuit  
will light the CO line button if the line is  
not physically connected. For instance,  
if you only have lines 1,2, and 3 con-  
nected you can disable line 4( if you do  
not disable that line, the lamp will re-  
main lit steady even though you can’t  
access the line). When you disable a  
CO line the lamp and button will not op-  
erate.  
3. Press MUTE (ENTER). The display  
shows:  
4. Press VOLUME to select a dif-  
ferent ring tone. You will hear a  
sample tone for each choice.  
5. Press MUTE (ENTER).  
7. Delayed Ringing  
Default Setting: Disabled  
15  
 
PROGRAMMING  
1. Press PROGRAM.  
shows:  
2. Press VOLUME until the display  
shows:  
4. Press VOLUME to choose the  
line( or intercom) you want to pro-  
gram for this feature.  
3. Press MUTE (ENTER),The display  
shows:  
5. Press MUTE (ENTER) to save.  
10. Call Forward  
Default Setting: OFF  
Range 11-22  
4. Press MUTE (ENTER).The display  
shows:  
When this feature is enabled (on) any  
intercom or transferred call you receive  
will be forwarded to the Speakerphone  
extension that you have identified.  
5. Press VOLUME  
to choose the  
setting.  
When the feature is enabled, upon re-  
ceiving a call you will hear a triple tone  
and the display will briefly show Call  
forward on the display prior to the call  
being forwarded.  
6. Press MUTE (ENTER) to save.  
To continue programming the remain-  
ing lines press VOLUME  
and then  
perform steps 4-6.  
1. Press PROGRAM.  
9. Automatic Line Selection  
2. Press VOLUME until the display  
shows:  
Default Setting: CO 1  
The line that you assign for automatic  
line selection( line preference) will be  
automatically accessed when you pick  
up the handset or press SPEAKER.  
3. Press MUTE (ENTER).The display  
shows:  
1. Press PROGRAM.  
2. Press VOLUME until the display  
shows:  
4. Press  
VOLUME  
to select the  
extension number (11-22) where  
you want to forward your calls.  
5. Press MUTE (ENTER) to save.  
3. Press MUTE (ENTER).The display  
16  
 
PROGRAMMING  
11. Auto Mute Enable/Disable  
Default Setting: Disable  
3. Press MUTE (ENTER).The display  
This feature prevents unauthorized  
eavesdropping when someone makes  
a single page to you.  
shows:  
Note: For intercom page with  
handsfree reply at your exten-  
sion, Auto Mute must be set to  
Disable.  
4. Press VOLUME to choose the  
flash length.  
5. Press MUTE (ENTER) to save.  
1. Press PROGRAM.  
13. Speed Dial  
2. Press VOLUME until the display  
shows:  
You can store eighteen (18) frequently  
dialed numbers in a speed dial bin by  
pressing the appropriate speed dial  
button during programming.  
3. Press MUTE (ENTER) .The display  
A number stored in the Called ID  
memory can be stored in a speed dial  
bin. You can store numbers in either  
pulse or tone dialing modes. Pauses  
and flashes may also be stored in  
memory. Each speed dial bin can store  
up to 16 digits (numbers) including  
pause, tone, and flash.  
shows:  
4. Press VOLUME  
to choose be-  
tween the enable or disable setting.  
5. Press MUTE (ENTER).  
12. Flash  
13.1 Storing aTelephone Number in  
Speed Dial  
Default Setting: 0.7 seconds  
Range: 0.1 seconds to 1.2 seconds  
1. Press PROGRAM.  
2. Press SPEED DIAL Button 1. The  
display shows:  
This feature is typically used to access  
custom calling service. You may also  
use Flash to end a call without hanging  
up the handset or pressing SPEAKER.  
1. Press PROGRAM.  
3. Press MUTE (ENTER). The display  
2. Press VOLUME until the display  
shows:  
shows:  
17  
 
PROGRAMMING  
ing to the line-in-use. This feature may  
not be compatible with some telephone  
systems. You may disable line-in-use  
detection if you use the speakerphone  
as a private telephone system exten-  
sion.  
4. Dial the number (digi) you want to  
store.  
5. Press MUTE (ENTER) to save.  
1. Press PROGRAM.  
Repeat step 2 and press another speed  
dial button to continue programming  
speed dial numbers.  
2. Press VOLUME until the display  
shows:  
13.2 Storing a Caller ID Number  
1. Display the number in the caller ID  
list. (Refer to Caller ID Operation).  
2. Press PROGRAM.  
3. Press MUTE (ENTER) .The display  
shows:  
3. Press the SPEED DIAL button.  
4. Press MUTE (ENTER).  
5. Press CID.  
6. Press MUTE (ENTER) to save.  
4. Press VOLUME to choose set-  
ting.  
5. Press MUTE (ENTER) .  
13.3 Erasing the Contents of a  
Speed Dial Bin  
15. Reset default Values  
1. Press PROGRAM.  
2. Press the SPEED DIAL button.  
3. Press MUTE (ENTER) .  
4. Press ERASE twice. For example,  
if you are deleting the contents of  
bin 10, the display will show:  
You may clear all the programmed data,  
and reset all parameters back to the  
original factory default values.  
1. Press PROGRAM.  
2. Press VOLUME until the display  
shows:  
14. Line In Use Detection  
3. Press MUTE (ENTER) .The display  
shows:  
Default Setting: Enable  
This feature allows the speakerphone  
to detect other telephone devices us-  
ing any of the four telephone lines. The  
speakerphone indicates line-in-use sta-  
tus by illuminating the LED correspond-  
18  
 
PROGRAMMING  
For your reference, here is the default value list:  
Extension ID:  
12  
Call forward:  
Disable  
Ringer On/Off:  
Ringer Type:  
“on” for each co line  
Type 1  
Delayed Ring:  
Co Trunk Connection:  
Line Preference:  
Auto-Mute:  
Disable  
Connected for each line  
CO #1  
Disable  
Tone/Pulse dialing:  
Flash Length:  
Tone Dialing  
700 mili-seconds  
Enable  
LIU Detection:  
Calendar:  
Jan 01 FR 12:00A  
None  
Area Code Setting:  
Speed Dialing:  
Ringer Volume:  
Speaker Volume:  
Handset Volume:  
Headset Volume:  
Empty  
Middle  
Level 4  
Minimum Level  
Middle  
19  
 
BASIC OPERATION  
1. Lamp (LED) Operation  
Fast flash  
Lamp flashes fast when an intercom  
call is ringing at your phone.  
Line Buttons  
Off  
Speaker Button  
Lamp is off when the line is not be-  
ing used.  
Off  
Lamp is off when the telephone is  
idle or you are using the handset.  
On steady  
Lamp is on if the line is being used  
by another extension.  
On steady  
Lamp is on if you are using the  
speakerphone.  
Wink  
Lamp will “wink” to indicate the line  
you are talking on.  
Slow flash  
Lamp slowly flashes when you are  
Slow flash  
Lamp flashes slowly when an in-  
using Auto Busy Redial (while wait-  
ing for the telephone to redial.)  
coming call is ringing or you receive  
a transferred call.  
Fast flash  
Lamp flashes fast when the Auto  
Busy Redial feature is used.  
Fast flash  
Lamp flashes fast when another  
extension places that line on hold.  
Wink  
Lamp will “ wink” when you are us-  
ing the headset.  
Very fast flash  
Lamp flashes very fast when you  
place a line on hold or you transfer  
a call.  
Mute (Enter) Button  
Off  
ICM Button  
Lamp is off when the telephone is  
not muted.  
Off  
Lamp is off when you are not using  
the intercom.  
On steady  
Lamp is on when the telephone is  
muted, the telephone is in the pro-  
gramming mode or the telephone is  
performing Auto Busy Redial.  
On steady  
Lamp is on steady when the inter-  
com path is busy.  
Message Lamp  
Wink  
Lamp will “wink” when you are us-  
ing the intercom.  
The lamp to the right of the CID keys  
will:  
20  
 
BASIC OPERATION  
Slow Flash  
4. Adjusting the Speaker Volume  
Level  
Lamp will slowly flash when you  
have new Telco voice messages  
(subscription required.)  
While using the speakerphone, you may  
adjust the volume level of the distant  
Fast Flash  
Lamp will flash quickly when the  
speakerphone is ringing.  
party’s voice by pressing  
VOLUME  
. You will hear a confirmation tone  
when the highest or lowest volume set-  
ting is reached.  
On steady  
Lamp will light steady when the  
speakerphone is in the Do Not Dis-  
turb mode.  
5. Adjusting the Headset Volume  
Level  
While using a headset, you may adjust  
the volume level of the distant party’s  
Off  
Lamp is off if there are no new mes-  
sages and the Do Not Disturb mode  
is off.  
voice by pressing  
VOLUME . You  
will hear a confirmation tone when the  
highest or lowest volume setting is  
reached.  
2. Line-In-Use Indication  
6. Adjusting the Ringer Volume  
Level  
If a single line telephone or other equip-  
ment such as a facsimile machine is  
using a line, that line lamp will light on  
your telephone to indicate that the line  
is busy. You may intrude on that busy  
line to verify that the line is not out of  
order. However, lines being used solely  
by VT 4121 speakerphone are privacy  
protected form intrusion.  
While the telephone is idle (not being  
used), you may adjust the ringer vol-  
ume level by pressing  
VOLUME  
.
You will hear a confirmation tone when  
the highest or lowest volume setting is  
reached.  
7. AC Power Failure Indication  
3. Adjusting the Handset Volume  
Level  
If power has been interrupted to your  
speakerphone the display will show:  
While using the handset, you may ad-  
just the volume level of the distant  
party’s voice by pressing  
VOLUME  
. You will hear a confirmation tone  
when the highest or lowest volume set-  
ting is reached.  
Press any button or key to cancel the  
power failure message.  
21  
 
BASIC OPERATION  
8. Making an Outside Call  
3. Dial the telephone number.The dis-  
play will show the digits you dial.  
After the last digit is dialed, the timer  
will soon begin to display the call  
duration:  
Each VT 4121 speakerphone may have  
four (4) outside lines programmed for  
direct access and dialing.  
8.1 Using the Handset  
1. Lift the handset. (If you have Auto-  
matic Line Selection enabled, the  
telephone will automatically select  
a line-proceed to Step 3 ).  
Note: If you dial more than 15 digits,  
all the digits will shift to the left  
of the display.  
2. Press a line button.  
3. Dial the telephone number.The dis-  
play will show the digits you dial.  
After the last digit is dialed, the timer  
will soon begin to display the call  
duration:  
4. Press SPEAKER or END when  
you’ve completed your call.  
9. Answering an Outside Call  
9.1 Using the Handset  
Note: If you dial more than 15 digits,  
all the digits will shift to the left  
of the display:  
Lift the handset.The ringing outside line  
is automatically selected.  
9.2 Using the Speakerphone  
1. Press the flashing line button,  
4. Hang up the handset or press END  
when you’ve completed your call.  
OR  
Press SPEAKER  
8.2 Using the Speakerphone / Head-  
set  
Note: When several lines are ringing,  
you can directly answer any line  
by pressing the associated line  
button.  
Note: The Speakerphone will auto-  
matically switch to headset  
mode when a compatible head-  
set is plugged into the headset  
jack.  
10. Placing a Call on Hold  
While on a call:  
1. Press SPEAKER. (If you have Au-  
tomatic Line Selection enabled, the  
telephone will automatically select  
a line-proceed to Step 3.)  
1. Press HOLD.The display will briefly  
show:  
2. Press a line button.  
22  
 
BASIC OPERATION  
2. Hang up.  
Note1: If the telephone you are call-  
ing is busy, you will hear busy  
tone. If the telephone you are  
calling is in Do Not Disturb  
(DND) mode, you will hear  
DND tone.  
Press ICM. If you want to make an  
intercom  
autotransferring the line or simply  
hang up the handset and the line  
will remain on hold.  
call  
without  
11. Retrieving a Call on Hold  
Note 2: If you do not perform Step 3  
above within approximately 10  
seconds, the intercom will be  
released.  
When you place a call on Hold at your  
speakerphone you will hear a brief re-  
mainder tone after 30 seconds.  
To retrieve a held call press the line  
button corresponding to the holding line.  
12.2 Using the Speakerphone  
Note: Skip Step 1 below if you pro-  
grammed the intercom for Auto-  
matic Line Selection.  
12. Making an Intercom Call  
12.1 Using the Handset  
1. Press ICM. The display will show:  
Note: Skip Step 1 if you programmed  
the intercom for Automatic Line  
Selection.  
2. Press SPEAKER.  
1. Press ICM. The display will show:  
3. Dial the desired intercom number  
(from 11 to 22). For instance, if you  
dial intercom number 15 the dis-  
play will show:  
2. Lift the handset.  
3. Dial the desired intercom number  
(from 11 to 22). For instance, if you  
dial intercom number 15 the display  
will show:  
When the person you called answers,  
your display will show:  
When the person you called answers,  
your display will show:  
4. Press SPEAKER to hang up.  
Note 1: If the telephone you are call-  
ing is busy, you will hear busy  
tone. If the telephone you are  
calling is in Do Not Disturb  
4. Hang up the handset to end the call.  
23  
 
BASIC OPERATION  
(DND) mode, you will hear  
DND tone.  
Note 2: If you do not perform Step 3  
above within approximately 10  
seconds, the intercom will be  
released.  
1. Lift the handset.  
12.3 Using the Direct Station Buttons  
2. Hang up the handset to end the call.  
The display will return to the idle  
mode.  
The speed dial buttons are also  
preprogrammed for use as Direct Sta-  
tion Selection (DSS) buttons. You can  
access extensions 11 through 22 by  
simply pressing the appropriate button.  
13.2 Using the Speakerphone/Head-  
set  
For example, if Station 12 is calling you,  
your handset will ring, your ICM button  
will flash, and the display will  
show:  
Note: Skip Step 1 below if you pro-  
grammed the intercom for Auto-  
matic Line Selection.  
1. Press ICM.  
2. Lift the handset or press SPEAKER.  
3. Press the desired DSS button.  
4. Hang up the handset to end the call.  
1. Press ICM or SPEAKER.  
Note1: If the telephone you are call-  
ing is busy, you will hear busy  
tone. If the telephone you are  
calling is in Do Not Disturb  
(DND) mode, you will hear  
DND tone.  
2. Press END or SPEAKER to end the  
call.The display will return to the idle  
mode.  
Note 2: If you do not perform Step 3  
above within approximately 10  
seconds, the intercom will be  
released.  
14. Intercom Call Pick Up  
You may answer an intercom call ring-  
ing at another speakerphone in the sys-  
tem by pressing ICM.  
13. Answering an Intercom Call  
13.1 Using the Handset  
15. Transferring a Call  
While on a line:  
For example, if Station 12 is calling you,  
your handset will ring, your ICM button  
will flash, and the display will show:  
1. Press HOLD. The display shows:  
24  
 
BASIC OPERATION  
18. Conferencing  
A three-way conference call may con-  
sist of two (2) outside lines or one (1)  
outside line and two (2) extensions.  
2. Dial the extension number where  
you will transfer the call (or press a  
DSS button ). For instance, if you  
want to transfer a call to extension  
15 the display will show:  
18.1 Two (2) Outside Lines  
While on a call on the first line:  
1. Press HOLD.The first line is placed  
on HOLD and the display shows:  
Note 1: You will hear a single tone if  
the call has transferred.  
2. Press a second line button.  
3. Dial the telephone number for the  
second party.  
4. Press CONFERENCE. The display  
will show the second telephone  
number that you dialed:  
Note 2: You will hear a transfer re-  
minder tone every 30 seconds  
if the transfer isn’t answered.  
Note 3: You can still transfer calls even  
if the system intercom is busy.  
16. Receiving a Transferred Call  
Any extension may pick-up a transferred  
call.  
5. Hang up to disconnect the lines and  
end the conference.  
You will hear transfer ring tone and the  
lamp for the transferred line will flash.  
18.2 One (1) Outside Line and Two  
(2) Extensions  
17. Muting a Call  
While on a call on the first line:  
The Mute feature turns off the telephone  
handset and speakerphone micro-  
phone so the distant party cannot hear  
you.You can also use Mute to block out  
background noise momentarily.  
1. Press HOLD.The first line is placed  
on Hold and the display shows:  
While on a line or using the intercom:  
1. Press MUTE (ENTER). The lamp  
will light.  
2. Press MUTE (ENTER) again to de-  
activate the feature.  
2. Press ICM.  
3. Dial the intercom number for the  
other internal party. For example, if  
you dial extension 20 the display will  
show the following when extension  
25  
 
BASIC OPERATION  
20 answers:  
Note: If you have programmed Auto-  
Mute, the Mute lamp will turn on  
and sounds in your room will not  
be heard by the calling party.  
1. Lift the handset or press MUTE (EN-  
TER) (if the Mute lamp is lit).  
2. Hang up to end the call.  
4. Press CONFERENCE. The display  
shows:  
19.3 Changing Signaling Modes  
If you have made a voice page to an  
extension and do not receive a reply,  
press ICM and the other extension will  
begin tone signaling to alert users in  
the area.  
5. Hang up to end the conference.  
Note: When you hang up extension 20  
will still be connected to the line  
until that extension hangs up.  
To Switch From Page Mode to Tone  
Ringing:  
19. Paging  
19.1 Paging Another Speakerphone  
After establishing a voice page to an-  
other extension, press ICM.  
1. Lift the handset.  
2. Press PAGE. The display shows:  
To Switch From Tone Ringing to Page  
Mode:  
After establishing an intercom call,  
Press PAGE.  
3. Dial the desired intercom number.  
For instance, if you dial extension  
15 the display shows:  
19.4 To Voice Page All Speaker-  
phone Extensions  
1. Lift the handset.  
2. Press PAGE ALL. The display  
shows:  
4. Make your page announcement.  
Note: Only VT4121 speakerphones  
can receive voice paging.  
19.2 Answering a Page  
3. Announce your message.  
You will hear a tone prior to receiving a  
voice page. You may then answer the  
page using the speakerphone.  
26  
 
BASIC OPERATION  
19.5 Receiving a Voice Page to All  
Speakerphone Extension.  
service such as call waiting, 3-way call-  
ing, etc.  
For example, if extension 12 sends a  
Voice Page to all telephones in the sys-  
tem, the extension telephone will show:  
While on a line:  
1. Press FLASH to obtain new dial  
tone.  
2. Dial the new telephone number or  
service code.  
22. Using the Pause Feature  
19.6 Meet Me Answer to All Page  
During speed dialing you can use the  
Pause feature to insert a delay in a di-  
aling sequence. Pause may be needed  
to access certain banking and long dis-  
tance services. Each pause is 3 sec-  
onds. During manual dialing, you can  
press the button repeatedly to create a  
longer delay.  
Press PAGE or PAGE ALL to answer  
the page. For instance, if extension 12  
performs an All Page, the display  
shows:  
While on a line:  
1. Dial the numbers prior to the pause.  
2. Press REDIAL/PAUSE.  
3. Dial the remaining number after the  
pause.  
20. Do Not Disturb  
You may use the DND feature to avoid  
telephone interruptions. When acti-  
vated, you will not hear incoming ring-  
ing from outside lines, intercom calls  
and pages.  
23. Auto Busy Redial  
To continue dialing a busy number from  
the telephone:  
While the telephone is idle:  
Press DND. The display shows:  
When you dial a telephone number that  
is busy, hang up and perform the fol-  
lowing steps.  
1. Press SPEAKER (If you have Au-  
tomatic Line Selection enabled, tele-  
phone will automatically select a  
line-proceed to Step 3.)  
Note: Press DND again to deactivate  
DND. The display will return to  
the idle mode.  
2. Press a line button.  
3. Press REDIAL/PAUSE. The tele-  
phone will dial the number. If the  
distant party is still busy, the tele-  
phone will hang up after about 15  
seconds, it will then wait about 5  
21. Using the Flash Button  
You may use Flash instead of pressing  
the hookswitch to access custom call-  
ing features provided by your telephone  
27  
 
BASIC OPERATION  
seconds, and then dial the number  
again.  
Privacy feature allows someone else to  
join your conversation on the same line.  
4. When you hear ringing, lift the hand-  
To override (disable) Call Privacy:  
set to speak.  
Press the line button that you are cur-  
rently accessing until you hear a single  
tone.  
Note: The MUTE lamp lights steady  
when the Auto Busy Redial fea-  
ture is activated.The SPEAKER  
lamp will flash slowly during di-  
aling attempts, and quickly dur-  
ing dialing.  
To enable Call Privacy:  
Press the line button until you hear a  
double tone.  
24. Last Number Redial  
Note 1: When non-system equipment,  
such as a single line telephone  
or facsimile machine, is using  
a line, any VT 1421 system  
telephone may access that line  
also. However, when a system  
telephone accesses the line  
the Call Privacy feature is en-  
abled and additional system  
telephone may not access the  
line.  
To dial the last number dialed from the  
telephone:  
1. Lift the handset.  
2. Press a line button.  
3. Press REDIAL/PAUSE and the  
number is dialed automatically.  
Note: You may also redial using the  
speakerphone by simply press-  
ing REDIAL/PAUSE. If you  
press SPEAKER first, you will  
activate Auto Busy Redial.  
Note 2: Due to the direct wiring of  
single line telephones,  
cordless telephones, facsimile  
machines, or modems, it is not  
possible to prevent these de-  
vices from accidentally intrud-  
ing on a line that you are us-  
ing.  
25. Speed Dialing  
1. Lift the handset.  
2. Press a SPEED DIAL button. The  
number will be dialed automatically.  
Note: You may use the speakerphone  
to dial a speed dial number by  
simply pressing the SPEED  
DIAL button.  
27. Pulse-to-Tone Switching  
If you are pulse dialing service you may  
need to access a computer or calling  
services that use tone dialing.  
While on a line:  
26. Call Privacy  
1. Dial the telephone number in pulse  
mode.  
2. Dial *tone to change to the tone di-  
aling mode.  
Another extension cannot access a line  
that you are using unless you override  
Privacy for that call. Overriding the Call  
28  
 
BASIC OPERATION  
3. Dial the remaining numbers to be  
dialed in the tone mode.  
Note: Your telephone company may  
send a signal to remove the in-  
dicator light once you have re-  
trieved your messages, or you  
may press ERASE twice to re-  
move the indicator light manu-  
ally.  
Note: When you hang up the tele-  
phone will return to the pulse  
dialing mode.  
28. Message Waiting Light  
*Not all local telephone service  
providers send the FSK signal  
required to activate the Mes-  
sage Waiting Light. If you have  
voice messaging, but your Mes-  
sage Waiting does not flash  
when receive new messages,  
check with your service, pro-  
vider to see if FSK signaling is  
available.  
If you subscribe to voice mail service  
from your local telephone company, the  
LED to the right of the Caller ID keys  
will flash when someone has left a mes-  
sage for you.This feature is compatible  
with FSK signaling from the telephone  
company*.The display will indicate line  
(1-4) that the message signal was re-  
ceived. The display will show:  
In this example, there is a message  
waiting on L1 and L4. Follow your voice  
mail service instructions for retrieving  
a message.  
29  
 
CALLER ID OPERATION  
IMPORTANT: You must subscribe to  
Caller ID service pro-  
vided by your local  
telephone company  
on each line you wish  
to receive call informa-  
tion.  
2.1 To Program the Area Code  
1. Press PROGRAM.  
2. Press VOLUME until the display  
shows:  
1. Caller ID Buttons  
3. Press MUTE (ENTER).  
4. Dial the area code.  
There are five (5) buttons used to ac-  
cess Caller ID functions:  
5. Press MUTE (ENTER).  
2.2 To Erase the Programmed Area  
Code  
CID  
To switch between multiple caller ID  
screens during 2 or more ringing  
calls.  
1. Press PROGRAM.  
2. Press VOLUME  
until the display  
shows:  
To move backward through the caller  
ID list.  
3. Press MUTE (ENTER).  
4. Press ERASE. The display will  
show:  
To move forward through the caller  
ID list.  
ERASE  
To erase a call from the caller ID list.  
5. Press ERASE again.The area code  
DIAL  
is deleted.  
To dial a number from the caller ID  
list.  
3. Receiving a Call  
2. Programming the Area Code  
You will need to subscribe to the Caller  
ID service from your telephone com-  
pany to receiver Caller ID information.  
Default: empty  
When you receive a local call from a  
person with your same home area code,  
the telephone will not store the area  
code. This feature will enable you to  
redial the caller in the future.  
When a call is received, the display will  
show the name and number of the  
caller, and the date and time the call is  
received. Some telephone companies  
send both the name and number of the  
30  
 
CALLER ID OPERATION  
caller.Other telephone companies may  
only provide the number of the calling  
party.  
caller ID information for subsequent  
ringing lines. Once you have received  
the information for all the ringing lines,  
press CID again and the display will re-  
turn to the date and time mode.  
Note 1: When the VT 4121 is con-  
nected behind a PBX or key  
system, the caller ID features  
cannot be used.  
The display will first show the caller ID  
information for Line 1:  
3.1 Receiving a Name and Number  
Call  
1. Press CID to review the information  
The display will show the caller ID in-  
formation typically after the first ring:  
for Line 2:  
2. Press CID to return to the time/date  
display if no other lines are ringing.  
3. Press CID to review the information  
for Line 1 again:  
Where: L1 is the ringing line number  
1235215 is the number of the  
caller  
ABC CO. is the name of the  
caller  
Note: The display will return to the  
idle mode when:  
3.3 Receiving a Number Only Call  
The caller hangs up and ringing  
stops.  
An extension telephone an-  
swers the call.  
You answer the call and hang  
up.  
You perform another telephone  
function.  
The display will show:  
3.4 Receiving a Blocked Call  
3.2 Receiving Multiple Calls  
Sometimes a caller will prevent their  
number from being displayed on your  
telephone:  
If two or more lines are ringing, the tele-  
phone will show the caller ID informa-  
tion for the line that began ringing first.  
Press CID to view the caller ID infor-  
mation for the next ringing line.You can  
continue to press the button to view  
31  
 
CALLER ID OPERATION  
3.5 Receiving a Call from Outside the  
Calling Area  
If a caller is outside of your Caller ID  
area:  
Where:  
RR  
-Index no. of the call  
list (01-99)  
4. Reviewing Calls in the Caller List  
L
-Telephone line num-  
ber associated with  
call (1-4)  
-Phone number  
-Caller’s name  
Information for a maximum of ninety-  
nine (99) calls will be maintained. If  
more than 99 calls are received, the  
newest call will replace the oldest call  
in the list.  
(NUMBER)  
(NAME)  
(DATE & TIME) -Date and time call  
record was received  
NEW  
-NEW call record or  
not (no label)  
1. Press  
or  
. The display will  
show the total Caller ID record num-  
ber and new call number.  
EXAMPLE:  
2a. Press  
to display the information  
Press # to view date and time display:  
of the first call record.  
2b. Press  
to display the information  
of the last call record.  
3a. Press  
of the second call record.  
3b. Press  
to display the information  
5. Press END to exit the review mode  
and return to the time/date display.  
to display the information  
of the first call record again.  
5. Delete an Individual Record from  
the List  
4a. Press  
to repeatedly to scroll  
through the list forward.  
4b. Press  
to repeatedly to scroll  
You can delete individual call records  
from the list by pressing ERASE while  
reviewing a record in the list.  
through the list backwards.  
Note: The call records will be dis-  
played in the following format:  
32  
 
CALLER ID OPERATION  
6. Delete the Entire Caller ID List  
You can delete the entire Caller ID List  
by pressing ERASE while viewing the  
total calls/new calls display.  
7. Dialing a number form the Caller  
ID List  
You can dial a number from the Caller  
ID list while in the review mode.  
1. Select a Line Key (L1-L4);  
2. Dial any required prefix (1);  
3. Press DIAL;  
4. The display shows the number digit  
by digit as it is dialed.  
8. Saving a Number to a Speed Dial  
Key  
You may save a number form the Caller  
ID List to a Speed Dial Key while in re-  
view mode:  
1. Enter the programming mode by  
pressing PROGRAM. The display  
shows:  
2. Select an available Speed Dial Key  
3. Press MUTE (ENTER) to store the  
Caller ID Number on the Speed Dial  
Key.  
4. Press CID to review calls in caller  
ID memory.  
5. Press MUTE (ENTER) to confirm  
the storing.  
33  
 
AUX DATA PORT  
The Speakerphone is equipped with an auxiliary data port on the back panel as  
shown:  
Auxiliary Data Port  
The auxiliary data port can be used to connect any standard single line device to  
line 4 for basic line service. This is particularly useful for notebook PC modem con-  
nections, as well as fax machines or other single line telephone devices.  
34  
 
MAINTENANCE  
TAKING CARE OF YOUR TELEPHONE.  
Your VT4121 contains sophisticated electronic parts, so it must be treated with care.  
Avoid rough treatment  
Place the handset down gently. Save the original packing materials to protect your  
telephone if you ever need to ship it.  
Avoid water  
Your telephone can be damaged if it gets wet. Do not handle your speakerphone  
with wet hands. Do not install it near a sink, bathtub or shower.  
Electrical storms  
Electrical storms can sometimes cause power surges harmful to electronic  
equipment.  
For your own safety, use caution when using electric appliances during storms.  
35  
 
WARRANTY STATEMENT  
WHAT DOES OUR WARRANTY COVER?  
Any defect in material or workmanship.  
FOR HOW LONG AFTER THE ORIGINAL PURCHASE?  
To the original purchaser only - ONE YEAR.  
WHAT WILL VTECH DO?  
At our option, repair or replace your unit.  
HOW DO I SEND MY UNIT, IN OR OUT OF WARRANTY?  
In the U.S. Call VTECH Communications customer service for Return  
Authorization at: 1-800-595-9511  
Properly pack your unit. lnclude any cables & accessories which were originally  
provided with the product. We recommend using the original carton and  
packing materials.  
Include in the package a copy of the sales receipt or other evidence of date  
of original purchase (if the unit was purchased within the lase twelve months).  
Print your name and address, along with a description of the defect, and  
include this in the package Or Vtech Electronics.  
Includ payment for any service or repair not covered by warranty, as determined  
by VTECH Communications.  
Ship the unit via UPS Insured, or equivalent to:  
In the U.S.  
VTECH COMMUNICATIONS  
11035 SW 11th Street  
Bldg. B Suite 270  
Beaverton, OR 97005  
VTECH Communications assumes no responsibility for units  
sent without prior Return Authorizatlon.  
36  
 
TECHNICAL SPECFICATIONS  
VT 4121 Speakerphone  
Function Buttons: , C I D,  
, E n d ,  
ERASE, Do Not Dis-  
turb, Dial, Page,  
Page All, CO Lines 1/  
2/3/4*, Intercom*,  
Mute(Enter)*, Pro-  
gram, Volume, Con-  
Physical:  
Modular, Desk/  
Wall Mounted,  
High/Low Angle  
Stand  
Power:  
Input:  
Class 2 Trans-  
former  
120VAC, 60Hz,  
7W  
ference,  
Flash,  
R e d i a l ( Pa u s e ) ,  
Speaker*, Hold, 18  
Speed Dial Buttons  
Output:  
12VDC, 400MA  
(milliamps)  
(*) denotes button  
with LED  
Electrical:  
4 CO/PBX Lines,  
2 Wire, Loop Start,  
600 Ohms, 24/  
48VDC  
Dial Keys:  
12 Keys, Continuous  
DTMF  
Dimensions:  
237 mm long  
212 mm wide  
93.5 mm high  
Ringer Equivalence:0.3B  
Mechanical: 2 Each RJ-14C  
Jacks  
Weight:  
35.1 ounces (0.994  
kg)  
Line 4 Auxiliary  
Jack  
Specifications, features, and availabil-  
ity of optional accessories are all sub-  
2.5mm Headset  
Jack  
ject to change without prior notice.  
Power Jack 12  
VDC  
LCD:  
Wide Angle Su-  
per-Twist (STN) 2  
x16 Alpha-Nu-  
meric  
37  
 
VT 4121  
4-Line Speakerphone  
Wall Mounting  
Template  
Use this template when wall  
mounting your base unit. To mark  
the positions of the mounting  
screws, hold this template against  
the wall, and press a pencil or pen  
point through the center of each  
crossmark.  
NOTE:  
Select a spot where you can screw  
into a wooden stud within the wall.  
The mounting screws will not hold  
securely in plaster or wallboard  
alone.  
38  
 
TABLE OF CONTENTS  
INTRODUCTION.................................................................................................. 1  
Becoming familiar with your speakerphone ......................................................... 1  
The display........................................................................................................... 2  
The Features........................................................................................................ 2  
Parts Check list .................................................................................................... 5  
FCC REGULATIONS ........................................................................................... 6  
IMPORTANT SAFETY INSTRUCTIONS ............................................................. 8  
INSTALLATION ....................................................................................................10  
Site Planning .........................................................................................................10  
Installing the Speakerphone .................................................................................10  
Desk/Tabletop Mounting ................................................................................. 10  
Wall Mounting................................................................................................. 11  
PROGRAMMING ................................................................................................. 13  
General Programming Guidelines ....................................................................... 13  
Extension Number ............................................................................................... 13  
Tone/Pulse Dialing ............................................................................................... 13  
Date and Time...................................................................................................... 14  
CO/PBX Line Ringing .......................................................................................... 14  
CO Line Ring Tone ............................................................................................... 15  
Delayed Ringing................................................................................................... 15  
CO Trunk Connection........................................................................................... 15  
Automatic Line Selection ..................................................................................... 16  
Call Forward ......................................................................................................... 16  
Auto Mute Enable/Disable ................................................................................... 17  
Flash .................................................................................................................... 17  
Speed Dial ........................................................................................................... 17  
Storing a Telephone Number in Speed Dial ....................................................... 17  
Storing a Caller ID Number ................................................................................ 18  
Erasing the Contents of a Speed Dial Bin .......................................................... 18  
Line In Use Detection .......................................................................................... 18  
Reset default Values ............................................................................................ 18  
BASIC OPERATION ............................................................................................ 20  
Lamp (LED) Operation ......................................................................................... 20  
Line-In-Use Indication .......................................................................................... 21  
Adjusting the Handset Volume Level ................................................................... 21  
Adjusting the Speaker Volume Level ................................................................... 21  
Adjusting the Headset Volume Level ................................................................... 21  
Adjusting the Ringer Volume Level ...................................................................... 21  
AC Power Failure Indication ................................................................................. 21  
 
TABLE OF CONTENTS  
Making an Outside Call........................................................................................ 21  
Using the Handset.......................................................................................... 22  
Using the Speakerphone/Headset ................................................................. 22  
Answering an Outside Call .................................................................................. 22  
Using the Handset.......................................................................................... 22  
Using the Speakerphone ............................................................................... 22  
Placing a Call on Hold ......................................................................................... 22  
Retrieving a Call on Hold ..................................................................................... 23  
Making an Intercom Call ...................................................................................... 23  
Using the Handset.......................................................................................... 23  
Using the Speakerphone ............................................................................... 23  
Using the Direct Station Buttons .................................................................... 24  
Answering an Intercom Call ................................................................................. 24  
Using the Handset.......................................................................................... 24  
Using the Speakerphone/Headset ................................................................. 24  
Intercom Call Pick Up .......................................................................................... 24  
Transferring a Call ................................................................................................ 24  
Receiving a Transferred Call ................................................................................ 25  
Muting a Call ........................................................................................................ 25  
Conferencing........................................................................................................ 25  
Two (2) Outside Lines .................................................................................... 25  
One (1) Outside Line and Two (2) Extensions ............................................... 25  
Paging .................................................................................................................. 26  
Paging Another Executive Speakerphone ..................................................... 26  
Answering a Page .......................................................................................... 26  
Changing Signaling Modes ............................................................................ 26  
To Voice Page All Speakerphone Extensions ................................................ 26  
Receiving a Voice Page to All Speakerphone Extension ............................... 27  
Meet Me Answer to All Page .......................................................................... 27  
Do Not Disturb ..................................................................................................... 27  
Using the Flash Button ........................................................................................ 27  
Using the Pause Feature ..................................................................................... 27  
Auto Busy Redial ................................................................................................. 27  
Last Number Redial ............................................................................................. 28  
Speed Dialing ...................................................................................................... 28  
Call Privacy .......................................................................................................... 28  
Pulse-to-Tone Switching ...................................................................................... 28  
Message Waiting Light ......................................................................................... 29  
CALLER ID OPERATION .................................................................................... 30  
Caller ID Buttons .................................................................................................. 30  
Programming the Area Code ............................................................................... 30  
To Program the Area Code............................................................................. 30  
To Erase the Programmed Area Code ........................................................... 30  
 
TABLE OF CONTENTS  
Receiving a Call ................................................................................................... 30  
Receiving a Name and Number Call .............................................................. 31  
Receiving Multiple Calls ................................................................................. 31  
Receiving a Number Only Call ....................................................................... 31  
Receiving a Blocked Call ............................................................................... 31  
Receiving a Call from Outside the Calling Area ............................................. 32  
Reviewing Calls in the Caller List ........................................................................ 32  
Delete an Individual Record from the List............................................................ 32  
Delete the Entire Caller ID List ............................................................................ 32  
Dialing a number form the Caller ID List .............................................................. 32  
Saving a Number to a Speed Dial Key ................................................................ 33  
AUX DATA PORT................................................................................................. 34  
MAINTENANCE................................................................................................... 35  
WARRANTY STATEMENT .................................................................................. 36  
TECHNICAL SPECFICATIONS ......................................................................... 37  
WALL MOUNTINGTEMPLATE........................................................................... 38  
 
VTECH COMMUNICATIONS LTD.  
Is a trademark of VTECH COMMUNICATIONS LTD.., a member  
of THE VTECH GROUP OF COMPANIES.  
Distributed in the U.S.A. by VTECH Communications, Beaverton, OR, 97008.  
Copyright 1999 for VTECH COMMUNICATIONS LTD..  
ISSUE 0  
 

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