OWNER’S INSTRUCTION
MANUAL
Four Line Auto-Attendant/Answering System
MODEL 2750
2750 User Guide Version 1.3
Table of Contents
We want you to know all about your new Telephone......................................................................1
2750 FEATURE LIST.....................................................................................................................2
IMPORTANT SAFETY INSTRUCTIONS....................................................................................4
1. UNPACKING AND INSTALLATION.......................................................................................5
1.1. Box Contents.......................................................................................................................5
1.2. Telephone Part Identification...............................................................................................6
1.3. INSTALLATION.................................................................................................................7
1.3.1. Identify Your Existing Wiring System........................................................................7
1.3.2. Plan Your Installation.................................................................................................7
1.3.3. Standard Installation:..................................................................................................7
1.3.4. Installations with Private Lines and Unconnected Lines:..........................................7
1.3.5. Desk Mount................................................................................................................7
1.3.6. Wall Mount.................................................................................................................7
1.3.7. Assign a Station Number............................................................................................8
1.3.8. Connect Cords to Telephone.......................................................................................8
1.3.9. Install Batteries (Optional)........................................................................................8
1.3.10. Verify Proper Installation..........................................................................................9
2. SYSTEM PROGRAMMING......................................................................................................9
2.1. Station Number Assignment................................................................................................9
2.2. Station Name Assignment....................................................................................................9
2.3. Line Configuration/Type....................................................................................................10
2.3.1. To Set Connections/Configuration............................................................................11
2.4. Loop Voltage Detector.......................................................................................................11
2.4.1. To Set Loop Voltage Detector...................................................................................11
2.5. Ringer Configuration.........................................................................................................12
2.5.1. To choose how each line will ring:...........................................................................12
2.5.2. Setting Distinctive Ringing......................................................................................12
2.5.3. Setting Off-Hook Ringing........................................................................................13
2.6. Intercom Call Response.....................................................................................................13
2.6.1. To choose how your phone will respond to intercom calls:.....................................13
2.7. Automatic Line Selection..................................................................................................14
2.7.1. To Set Automatic Line Selection:.............................................................................14
2.8. Toll Restriction..................................................................................................................14
2.8.1. To set the system’s toll restriction access code:........................................................14
2.8.2. Turning toll restriction on/off at a particular telephone:...........................................15
2.8.2.1. To set the restricted numbers at a particular telephone:..................................15
2.8.2.2. To completely restrict specific lines at a telephone:.......................................15
2.8.2.3. To set the allowed numbers at a particular telephone:.....................................16
2.9. System Privacy..................................................................................................................16
2.9.1. To Change the Privacy Setting.................................................................................17
2.10. Dialing Mode...................................................................................................................17
2.11. Area Codes.......................................................................................................................17
2.11.1. To enter HOME, LOCAL, and “1 PLUS 7” area codes.........................................18
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3. MEMORY SETTINGS..............................................................................................................18
3.1. Memory Features...............................................................................................................18
3.1.1. Storing a hyphen into memory.................................................................................18
3.1.2. Storing a dialing pause into memory........................................................................18
3.1.3. Storing a flash into memory.....................................................................................18
3.1.4. Storing temporary tone dialing into memory...........................................................18
3.1.5. Storing one of the last five numbers dialed into memory.........................................18
3.1.6. Storing a Caller ID number into memory.................................................................19
3.2. To store a personal directory dial number.........................................................................19
3.3. To Store Caller ID Records................................................................................................19
3.4. To Store the Centrex Prefix...............................................................................................19
3.4.1. To Set Centrex Prefix................................................................................................19
3.5. Erase Numbers Stored in Memory....................................................................................20
3.6. Erase Toll Restrictions.......................................................................................................20
3.7. Erase All Feature Settings..................................................................................................20
3.8. Reset Default Settings........................................................................................................20
4. MISCELLANEOUS SETTINGS..............................................................................................21
4.1. Time and Date....................................................................................................................21
4.2. Message Waiting Lamp......................................................................................................21
4.2.1. Message Waiting Line Selection...............................................................................21
4.2.2. Message Waiting Mode Selection.............................................................................21
4.3. Caller ID on Call Waiting (CIDCW) Sensitivity...............................................................22
4.4. Hold Call Reminder...........................................................................................................22
4.5. Adjusting Auto Hold Drop Time........................................................................................22
4.6. Adjusting Flash Timer........................................................................................................22
5. ANSWERING SYSTEM..........................................................................................................23
5.1. Setting Answering Option..................................................................................................23
5.1.1. Answering Machine..................................................................................................23
5.1.2. Recording your Out Going Message (OGM) for Answering Machine....................23
5.1.2.1. Reviewing your OGM.....................................................................................23
5.1.2.2. Erasing your OGM..........................................................................................23
5.1.2.3. Changing your OGM.......................................................................................24
5.1.3. Setting Your Telephone's Pickup Delay....................................................................24
5.1.4. Setting Toll Saver.....................................................................................................24
5.1.5. New Message Beep..................................................................................................24
5.1.6. Remote Code............................................................................................................25
5.1.7. Setting Message Length............................................................................................25
5.2. Auto-Attendant..................................................................................................................25
5.2.1. Set up the Auto Attendant.........................................................................................26
5.2.2. Record your Auto Attendant Day (OGM)................................................................26
5.2.3. Record your Auto Attendant Night (OGM)..............................................................26
5.2.4. Record your Auto Attendant Zero-Out (OGM)........................................................27
5.2.5. Setting Auto Attendant Pickup Delay......................................................................27
5.2.6. Night Timer Set........................................................................................................27
5.2.7. Setting More Than One Phone as an Auto Attendant...............................................28
5.2.8. Using Additional Auto Attendant OGMs..................................................................28
5.2.9. Setting Separate Auto Attendant OGM's for Different Lines...................................28
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5.2.10. Turn Off the Auto Attendant on One or More Lines..............................................29
5.2.11. Choosing the Zero-Out Action................................................................................29
5.2.12. All Transfer Feature................................................................................................29
5.2.13. Leave a Message at the Auto Attendant..................................................................29
5.2.14. Set Night Message by Line.....................................................................................29
5.2.15. Transfer Direct to Voice Mail.................................................................................30
5.2.16. Summary of Auto Attendant Actions......................................................................30
6. TELEPHONE OPERATION.....................................................................................................31
6.1. Making and Answering Calls.............................................................................................31
6.2. Redial.................................................................................................................................31
6.2.1. To redial the last phone number dialed.....................................................................31
6.2.2. To redial any of the last five phone numbers dialed.................................................31
6.3. Hold...................................................................................................................................31
6.3.1. Placing a Call on Hold..............................................................................................31
6.3.2. Making a call on another line...................................................................................31
6.3.3. Answering a call on another line..............................................................................32
6.4. Conference.........................................................................................................................32
6.4.1. Outside Calls.............................................................................................................32
6.4.2. Outside Call with Intercom Station..........................................................................32
6.5. Transfer..............................................................................................................................32
6.5.1. Attended Transfer.....................................................................................................32
6.5.2. Blind Transfer...........................................................................................................33
6.5.3. Transfer Ring............................................................................................................33
6.5.4. Personal Ring............................................................................................................33
6.6. Caller ID............................................................................................................................33
6.6.1. Incoming call............................................................................................................33
6.6.2. Call Waiting Caller ID..............................................................................................33
6.6.3. Caller List.................................................................................................................33
6.6.3.1 Reviewing Calls...............................................................................................33
6.6.3.2. Dialing Calls....................................................................................................34
6.6.3.3. Deleting Numbers............................................................................................34
6.7. Volume Levels...................................................................................................................34
6.7.1. Ringer.......................................................................................................................34
6.7.2. Handset.....................................................................................................................34
6.7.3. Speakerphone............................................................................................................35
6.7.4. Intercom Speaker......................................................................................................35
6.7.5. Discrete alert.............................................................................................................35
6.8. Voice Mail (Message Waiting)...........................................................................................35
6.8.1. Accessing Messages.................................................................................................35
6.8.2. Resetting MSG Lamp...............................................................................................35
6.9. Flash...................................................................................................................................36
6.10. Mute.................................................................................................................................36
6.11. Do Not Disturb (DND)....................................................................................................36
6.12. Line Reserve....................................................................................................................36
6.13. Call Privacy.....................................................................................................................37
6.14. Toll Restriction................................................................................................................37
6.14.1. Toll Restriction Removal (Single Call).................................................................37
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6.14.2. Toll Restriction Removal (Single Station).............................................................37
6.15. Timer................................................................................................................................37
6.15.1. Elapsed Call Time...................................................................................................37
6.15.2. Timer Reset.............................................................................................................38
6.15.3. Elapsed Call Time (Previous Calls)........................................................................38
6.16. Headset............................................................................................................................38
6.17. Directory Card.................................................................................................................38
6.18. Personal Directory...........................................................................................................38
6.19. Pre-dialing........................................................................................................................38
6.20. Intercom Calls..................................................................................................................38
6.20.1. Intercom while Idle.................................................................................................39
6.20.2. Intercom while on an Outside Call.........................................................................39
6.20.3. Answering Intercom Calls......................................................................................39
6.20.3.1. Intercom Ring...............................................................................................39
6.20.3.2. Intercom Voice..............................................................................................39
6.20.3.3. Intercom Handsfree......................................................................................39
6.20.3.4. Answering an Intercom Call while on an Outside Call................................39
6.21. Paging..............................................................................................................................39
6.21.1. Single Page............................................................................................................39
6.21.2. All Page..................................................................................................................40
6.21.3. Answering Pages.....................................................................................................40
6.21.3.1. Single Page....................................................................................................40
6.21.3.2. All Page.........................................................................................................40
6.21.4. Blocking Pages.......................................................................................................40
6.22. Room Monitoring............................................................................................................40
7. USING YOUR TELEPHONE'S ANSWERING SYSTEM......................................................41
7.1. Listening to your Messages...............................................................................................41
7.1.1. Play Messages...........................................................................................................41
7.1.2. Stop Message Playback............................................................................................41
7.1.3. Pause Message Playback..........................................................................................41
7.1.4. Repeat a Message ...................................................................................................42
7.1.5. Skip to the next Message .......................................................................................42
7.1.6. Jump back ...............................................................................................................42
7.1.7. Jump Forward...........................................................................................................42
7.1.8. Saving a Message as New.........................................................................................42
7.1.9. Message Auto Save ...............................................................................................42
7.1.10. Speed Message Up..................................................................................................42
7.1.11. Slow Down Message .............................................................................................42
7.1.12. Using Dial Pad ......................................................................................................42
7.1.13. Erasing Messages...................................................................................................43
7.1.13.1. To Erase A Message.......................................................................................43
7.1.13.2. To Erase All Messages ..................................................................................43
7.1.14. Recording A Memo or Conversation......................................................................43
7.1.14.1. Recording a Memo........................................................................................43
7.1.14.2. Recording a Telephone Conversation. ..........................................................43
7.1.15. Screening Calls ....................................................................................................43
7.2. Auto Attendant Overview..................................................................................................43
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7.3. To Repeat an Auto Attendant OGM...................................................................................44
8. USING STANARD TELEPHONES.........................................................................................44
8.1. Line Status and Calls on Hold...........................................................................................44
8.2. Call Privacy.......................................................................................................................44
8.3. Intercom.............................................................................................................................44
8.4. Fax Machines and Modems...............................................................................................44
9. BATTERIES..............................................................................................................................45
9.1. Battery Replacement..........................................................................................................45
9.2. Power Failure Operation....................................................................................................45
APPENDIX A................................................................................................................................46
Menu Tree.................................................................................................................................46
APPENDIX B................................................................................................................................50
Installation Worksheet..............................................................................................................50
APPENDIX C................................................................................................................................51
Toll Restriction Worksheet.......................................................................................................51
APPENDIX D...............................................................................................................................52
Trouble Shooting Guide............................................................................................................52
FCC INFORMATION...................................................................................................................53
TELEPHONE REPAIR.................................................................................................................54
LIMITED WARRANTY...............................................................................................................55
v 2750 User Guide Version 1.3
THANK YOU
FOR PURCHASING THE
2750
Four Line Auto-Attendant/Answering Telephone
We want you to know all about your new Telephone.
How to install it, the features it provides, and the services you can expect from its use. We have
included this information in your Owner’s Instruction Manual.
The 2750 is one of our new Series 7 Telephones. It is a stand alone 4-Line Telephone or part of a 4Line system consisting of up to 16 stations of 2740's, 2742's, or 2750's. The 2740 is our base unit. It
has 4 line buttons, Intercom, Conference, Page, Transfer, Mute, Headset, Flash, Redial, Hold, 5
memory dial buttons, 40 Number Personal Directory, Type II Caller ID, Speakerphone, and 2.5mm
Headset Jack.
The 2742 Analog Adapter will support attaching an analog telephone to your 4-Line system. For
example you can connect a cordless telephone, fax machine, or modem. These units will have an
extension number and can share all 4 lines.
The next telephone in our system is the model 2750. The 2750 has all of the features of the 2740 plus
an Answering System. This Answering System can either function as an answering machine with 60
minutes of recording time or as an Auto Attendant for your system.
1 2750 User Guide Version 1.3
2750 FEATURE LIST
EXPANDABLE UP TO 16 PHONES - All telephones
are compatible with each other and can accommodate
up to 4 lines. You can have up to 16 phones working
together.
FULL-FEATURED INTERCOM - Call any other
phone in your system with ease. You can even answer
intercom calls "hands-free" via speakerphone.
PAGING - Make a voice announcement through the
speaker of a particular phone, or through all the
telephones at once.
TRANSFER - Answer a call and transfer it to any
phone in the system.
PHONE STATUS INDICATION - See at a glance
which phones are in use.
UP TO 4 LINES - Access up to four separate phone
lines at the touch of a button. You can place any call
on hold and switch to another line.
3-WAY CALL CONFERENCE - Allows you to have
a 3-way conversation between you and two others.
BACKLIT LIQUID CRYSTAL DISPLAY - Large
backlit LCD for easy viewing, even in the dark.
Shows number dialed, clock, calendar, extension in
use indication. Also displays full caller ID
information. Illuminated for easy reading.
CALL TIMER - Every call is automatically timed in
minutes and seconds. Great for account billing and
controlling long distance usage.
HEADSET JACK - A 2.5mm headset jack with a
headset button and a built-in headset amplifier make
using a headset easy and convenient.
REDIAL LIST - Redial any of the 5 most recent calls,
or just view the date and time they were made, along
with their duration.
DO NOT DISTURB - Prevents interruption by
silencing the ringers, and preventing intercom calls
and pages to your phone.
TOLL RESTRICTION - Allows you to restrict
specific numbers and prevent unauthorized calls.
CALL PRIVACY ON/OFF - Prevents others from
joining or listening to your call.
AUTOMATIC LINE SELECTION - Allows you to
choose which line is automatically selected when
making an outside call.
MEMORY DIAL - 40 personal directory dial
numbers.
NON-VOLATILE MEMORY - All memory dial
numbers and feature settings are stored in a static
memory which retains its contents even with no
electrical power and no battery, so they can never be
accidentally lost.
ADJUSTABLE VOLUME CONTROLS - You may
adjust the volume of the handset, speakerphone and
headset separately.
LINE RESERVE - Enables you to reserve a line that
is currently in use. This spares you the trouble of
constantly monitoring your telephone while waiting
for a line to become available.
ADDITIONAL FEATURES - Battery Backup, Dual
Color Line Status Indicators, Flash, Hold, Mute,
Individual Ringer Control, Pre-dialing, Wall
Mountable, Hearing Aid Compatible.
CALLER ID CAPABILITY ON ALL 4 LINES Phone has caller ID capability for all 4 lines. You
must subscribe separately for each line on which you
want this service.
CALLER ID ON CALL WAITING - For each line
subscribed to this service, you may view the caller ID
information for all incoming calls, including Call
Waiting calls.
50 NAME AND NUMBER CALLER ID LIST Phone automatically stores the name, number, date
and time of the 50 most recent calls.
CALLER ID DISPLAY DIAL - Any number in the
2 2750 User Guide Version 1.3
caller ID list can be dialed at the touch of a button.
NEW CALL LAMP/ VISUAL MESSAGE WAITING
INDICATOR - See at a glance whether you have
received any new calls since you last viewed your
caller list. Lamp also indicates any new messages in
your Telephone Company voice mailbox. This lamp
is both FSK and stutter dial tone compatible, and can
be turned on or off on a per line basis. One phone can
show waiting messages for just one phone line. You
will need multiples phones to show waiting messages
for multiple lines.
PRIVATE LINES- Allows you to have private lines at
your telephone. These lines will only appear on your
telephone.
DISTINCTIVE RINGING - You may assign a unique
distinctive ring to your line to easily distinguish your
ringing telephone from other nearby phones
BUILT IN AUTO ATTENDANT – Answers
incoming calls and directs them to other telephones in
the system.
EIGHT SELECTABLE GREETINGS - You can set
the auto attendant to give up to eight different
greetings according to the user’s input. This feature is
useful for giving specific recorded information to
callers, such as hours of operation or directions.
REMOTE ACCESS - Allows you to call in to listen
to received messages.
TRANSFER DIRECT TO VOICE MAIL - Allows
callers to leave messages directly in a person’s voice
mail, without first ringing the extension.
at least one new message, lights steady to indicate
that the answering system is on.
MESSAGE AUTO SAVE - All messages are
automatically saved after you review them, until you
deliberately erase them.
MESSAGE GROUPING - When you review your
messages, the voice will announce the number of new
and saved messages, then will play all new messages,
followed by all the saved messages.
SAVE AS NEW - If you play a message that should
be heard by someone else, you may press the “Save
as New” button. The voice mail lamp will continue to
flash, and this message will be played along with any
other new messages.
ERASE - At any time while listening to a message,
you may press this button to erase it. Press this button
after all messages have been played to erase all
messages.
SCREEN CALLS - If you wish you may listen as
callers are leaving you a message. At any time you
can pick up the call if you wish.
SKIP/REPEAT - Use these buttons to jump to the
next message, or to go back to the beginning of the
current message.
BACK/FORWARD - Press these buttons to jump 2
seconds backward or forward in the currently playing
message. This is useful for getting a telephone
number you may have missed or to skip through an
unimportant part of a message.
DIGITAL MESSAGE RECORDING – Typical 60
minute total messages length
NIGHT MESSAGE GREETINGS - A night message
can be set to play during specific hours.
LINE SPECIFIC GREETING - You can assign
separate greetings to different lines, which is useful
for personal and business lines, or for two separate
businesses that share a system.
ANSWERING SYSTEM LAMP - Flashes to indicate
3 2750 User Guide Version 1.3
VARIABLE SPEED MESSAGE PLAYBACK - You
may increase or decrease the speed of the message
playback, without altering the voice pitch.
RECORD MEMO/CONVERSATION - With the
press of this button, you can record a memo or your
current telephone conversation. Your recording will
be saved along with the other messages.
PAUSE - Use this button to momentarily pause
message playback.
PLEASE READ BEFORE INSTALLING AND USING YOUR NEW
TELEPHONE EQUIPMENT.
IMPORTANT SAFETY INSTRUCTIONS
Always follow basic safety precautions when using your telephone equipment to reduce the risk of
fire, electrical shock, and injury.
1. Read and understand all instructions in the Owner’s Instruction Manual.
2. Read all warnings and follow all instructions marked on the product.
3. Unplug this product from the wall outlet before cleaning. Use a damp cloth for cleaning. Do not
use liquid or aerosol cleaners.
4. Do not use the telephone near water. For example, do not use near a bathtub, wash bowl, kitchen
sink, laundry tub, swimming pool, or in a wet basement.
5. Do not place this product on an unstable cart or stand. The product may fall causing serious
damage to the product.
6. Use only the type power source indicated on the label. If you are not sure of the type power
supply to your home, consult your dealer or local power company.
7. Do not place any objects on the telephone line cord. Do not locate the telephone where the line
cord will be walked on.
8. Do not block or cover ventilation slots and openings in the bottom of the telephone. The openings
should never be blocked by placing the telephone on a bed, sofa, rug, or other similar surfaces. The
telephone should never be placed near or over a radiator or heat register. The telephone should never be
placed in a built-in installation unless proper ventilation is provided.
9. Never spill liquid on the telephone or push objects of any kind through ventilation slots.
Liquid or objects may touch dangerous voltage points or short out parts that could result in a risk of fire
or electrical shock.
10. Do not disassemble this product. Opening or removing covers may expose you to dangerous
voltages or other risks. Incorrect reassembly can cause electrical shock when the product is
subsequently used.
11. Do not overload outlets and extension cords. Some telephones require AC power from an outlet.
Overloading the outlets can result in the risk of fire or electric shock.
12. Avoid using a telephone during a local thunderstorm. There may be a remote risk of electrical
shock from lightning.
13. Use only the power cord and batteries indicated in this manual. Do not dispose of batteries in a
fire. They may explode. Check with local codes for possible special disposal instructions.
14. Do not use a telephone to report a gas leak in the vicinity of the leak.
4 2750 User Guide Version 1.3
1. UNPACKING AND INSTALLATION
1.1. Box Contents
The following items should be packed with your 2750. Please contact your dealer if any of them is
missing.
2750 Phone (Main Body) 1 pcs
Handset 1 pcs
Handset Cord (Coiled Cord) 1 pcs
Line Cord 7ft 2 pcs
Short Line Cord 7” 1 pcs
Desk Stand 1 pcs
Power Adapter (Transformer 9VDC 500 ma) 1 pcs
Quick Start Guide 1 pcs
User Manual on Mini CD 1 pcs
5 2750 User Guide Version 1.3
1.2. Telephone Part Identification
1 Telephone Base 10 VM Buttons (See below) 19 Redial Button
2 Handset Cradle 11 Line Buttons 20 Headset Button
3 Menu Button 12 Intercom Button 21 Hold Button
4 Delete Button 13 2.5mm Headset Jack 22 Key Pad Buttons
5 Review Up/Down Btn 14 Conference Button 23 Volume Up Button
6 Message Lamp 15 Page Button 24 Speaker Button
7 Multi-Angle LCD 16 Flash Button 25 Volume Down Button
8 Select Button 17 Transfer Button 26 Speaker
9 Calls Button 18 Mute Button 27 Handset Jack
Voice Mail Buttons (Item 10)
6 2750 User Guide Version 1.3
1.3. INSTALLATION
1.3.1. Identify Your Existing Wiring System
For you to properly connect your 2750 4-Line Telephone to an existing wiring system, it is important
that you understand its configuration. The following are the most common multiple line situations.
They consist of either one or both types of standard telephone jacks: The RJ11 Single Line Jack and the
RJ14 Double Line Jack. Your system should match one of them.
1.3.2. Plan Your Installation
Up to 16 Cortelco 4 Line Telephones may be connected together. You may connect 2750, 2740 or 2742
4-Line Telephones to form your office/home configuration. Each device must be assigned a different
station number, from 01 to 16. Until a telephone is assigned a station number, the telephone will not
function correctly. Station 01 will be the first station to be assigned. See Section 2.1 Station Number
Assignment.
NOTE: Each 4-line telephone must be connected to the same Line 1 telephone number for proper
operation. The remaining lines may or not be connected to each station.
1.3.3. Standard Installation:
Your 2750 telephones come factory-set for a standard installation, which is also called “square” in
telephone terminology. This means that Line 1 is to be connected to the same Line 1 telephone number
at all the stations, Line 2 is to be connected to the same Line 2 telephone number at all the stations, and
so on for Lines 3 and 4. This is the desired setup for most installations, and if this is how you will be
connecting your 2750, you do not need to change any of the line connection settings in the telephones.
You need only connect the phones to the telephone lines.
1.3.4. Installations with Private Lines and Unconnected Lines:
You may connect private lines to Lines 2, 3 or 4 at some or all of your telephones. A private line is a
telephone number that is connected to only one station. It is not shared with any other 4 line station.
1.3.5. Desk Mount
a. Connect the power adapter to the jack on the bottom of the phone. Plug the adapter into a wall
outlet which is not controlled by a wall switch. Use only a 9V DC 500mA, Class 2 adapter.
b. Connect the line cords. See Section 1.3.8.
c. Select the desired viewing angle and install the desk stand. The desk stand can be installed in
two positions to give a choice of viewing angle.
d. Plug the coiled cord into the handset jack, and plug the other end of the cord into the base.
e. Place the handset on the base.
1.3.6. Wall Mount
a. Remove the desk stand. The unit will then mount directly on a standard wall telephone jack.
b. Connect the power adapter and the line cords. See Steps 2 and 3 above.
c. Mount telephone to wall jack (RJ-11W).
d. Plug the coiled cord into the handset, and then plug the other end of the cord into the base.
e. Rotate the handset hook into the wall mount position and place the handset on the base.
7 2750 User Guide Version 1.3
1.3.7. Assign a Station Number
Station 01 must be the first number assigned. Station 01 is required for programming select features
on the 2750. Refer to Section 2.1 for detailed instructions on assigning a station number.
1.3.8. Connect Cords to Telephone
If the wall jack is labeled Lines 1 & 2, connect the short telephone line cord to the jack on the
telephone labeled L1/L2. If the wall jack is labeled Lines 3 & 4, connect the short cord to the jack on
the telephone labeled L3/L4. Connect the long telephone line cord to the other line jack on the
telephone and thread it through its long groove on the bottom of the phone, then plug the AC power
cord into the adapter jack on the bottom of the telephone, threading the power cord through its long
groove on the bottom of the phone. Thread the short telephone cord through the square hole in the
center of the wall mount bracket, and then attach the wall mount bracket to the base of the telephone.
1.3.9. Install Batteries (Optional)
While it is not necessary for you to install batteries in your 2750 telephone for it to function normally,
we do recommend that they be installed. The batteries are not needed to preserve your memory dial
numbers, because all memory dial numbers are stored in static memory. The purpose of having
batteries installed is so that the telephone itself can function for up to two hours in the event of a power
failure. The telephone uses 3 AAA size batteries. We recommend using alkaline batteries.
To install Batteries, do the following.
a. Make sure the AC cord remains attached to the telephone and to an electrical outlet
b. Turn the telephone over.
c. Remove the battery door by using the tip of a ball point pen, paper clip, or similar object to
release the battery door tab.
d. Remove the old batteries.
e. Insert 3 pieces of new size AAA 1.5V alkaline batteries. Please note the “+” and “-” markings in
the battery compartment for the orientation of the batteries.
f. Close the battery cover.
Use caution when disposing of old batteries. Do not dispose of them in a fire. They may explode.
8 2750 User Guide Version 1.3
1.3.10. Verify Proper Installation
The following procedure should be used at each telephone to check for proper installation. Also use this
procedure any time you are experiencing difficulty. The phone must be connected to the AC power
supply, line 1 must be connected to the line 1 jack, and the phone must have been assigned an intercom
station number. First, verify that line 1 is connected to the same telephone number at all the telephones.
To do this, press the line 1 button at one of the telephones. The line 1 LED should be green, the
speakerphone LED should be red, and dial tone should be heard from the speaker. Now go to each of
the other stations and make sure that each line 1 LED is red. Next, make sure that lines 2, 3 and 4 are
connected the same at all the phones by performing the following steps at each telephone:
a. Press the line 1 button. The line 1 LED should be green, the speakerphone LED should be
red, and dial tone should be heard from the speaker.
b. Dial the telephone number for line 2. The line 2 LED should flash slowly. If the line 2 LED
does not flash, then line 2 is improperly connected to this telephone.
c. If this telephone utilizes line 3 and/or line 4, repeat steps 1 and 2, substituting the respective
phone number(s) in step 2.
2. SYSTEM PROGRAMMING
2.1. Station Number Assignment
Each station must be assigned a different station number.
To assign a number to a station:
a. Press MENU. The display will read “Phone Setting”
b. Press the soft key under ENTER. The display will show the currently assigned station number.
c. Press the soft key under CHANGE repeatedly, until the desired station number is displayed.
The choices are Station #01 through Station #16.
d. Press MENU to exit.
Until a telephone is assigned a station number, the telephone will not operate correctly. (see above)
Note: One phone in the system must be set as Station #01 in order to program all the system features.
Certain features can only be programmed at station 01 and will only function at station 01.
2.2. Station Name Assignment
You may give a name to each of your 4-Line telephones. During Intercom calls, the name that is
assigned to the station will show with the Extension Number. After assigning a Station Name at Station
#01, it may take twenty four hours to update all telephones.
To assign a name to a station:
a. Press MENU. The display will read “Phone Setting”
b. Press the soft key under ENTER.
c. Press the Down Arrow repeatedly until the display reads “Station Naming”
d. Press the soft key under ENTER. The display will show the currently stored name for station
#01, or indicate “No Name” if no name has yet been given to station #01.
e. Press soft Key under CHANGE if you wish to store a new name for station #01, or press
DOWN ARROW repeatedly until you see the station number that you want to name, and then
press the soft key under CHANGE.
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f. Use the dial pad numbers to enter the name for the desired station.
g. Press the soft key under SAVE.
Repeat steps “a” through “g” for any additional stations you wish to name.
The table below shows which dial pad numbers to press for all the different letters and special
characters.
Note that you can press the 0, *, and # buttons if you want those characters, and you can press the
down arrow button below the display to leave an empty space. Press the DELETE button to make
corrections.
0 0
1 , - ' & . ( ) 1
2 A B C a b c 2
3 D E F d e f 3
4 G H I g h i 4
5 J K L j k l 5
6 M N O m n o 6
7 P Q R S p q r s 7
8 T U V t u v 8
9 W X Y w x y 9
* *
# #
2.3. Line Configuration/Type
While you must share the same Line 1 telephone number at all the stations, you may choose to leave
some lines unconnected at particular stations or to connect private lines to Lines 2, 3 or 4 at particular
stations.
Common:This is the factory setting for all lines. This setting assumes that the telephone line is
connected to the same telephone line button at all stations.
Private:Use this setting at any telephone that is connected to a different telephone number than
the corresponding line at the other stations. For example, you may connect your private
telephone number to Line 3 at your station instead of connecting your station to the common
Line 3. In this example, you would set Line 3 at your station as PRIVATE.
Unconnected:Use this setting at any telephone that is not physically connected to all of its
lines. For example, you may install a 2750 4-line telephone in a room that is currently wired for
only lines 1, 2 and 3. In this example, you would set Line 4 at this station as UNCONNECTED.
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2.3.1. To Set Connections/Configuration
a. Press MENU. The display will read “Phone Setting.”
b. Press the soft key under ENTER.
c. Press the DOWN ARROW repeatedly until the display reads ”Line Type.”
d. Press the soft key under ENTER. The display will show the current line setting for Line 2.
e. Press the soft key under CHANGE repeatedly, until the desired line connection setting for Line
2 is displayed. The choices are:
i. L2: COMMON (factory setting)
ii. L2: PRIVATE
iii. L2: UNCONNECTED
f. Press the soft key under NEXT to see the current setting for Line 3, and repeat steps c, d, and e
to change the settings for Lines 3-4.
g. Press MENU to exit.
2.4. Loop Voltage Detector
Your 2750 telephone will light up its line status indicators when a telephone such as a fax machine,
modem, or standard telephone is using a line. If the line status indicators of your 2750 telephone do not
function properly, either failing to light up when a standard telephone uses a line, or staying lit even
though no telephone is using a line, the loop voltage detector setting needs to be adjusted. The factory
setting of 48 volts is appropriate for most installations. If this is not suitable, try setting your phone to
24 volts. If that does not work, then set it to 12 volts. You can also turn this feature OFF.
2.4.1. To Set Loop Voltage Detector
a. Press MENU.
b. Press DOWN ARROW repeatedly until “Advanced Setting” appears in the display.
c. Press the soft key under ENTER.
d. Press DOWN ARROW repeatedly until “Loop Detect:” appears in the display, along with the
current setting
e. Press the soft key under CHANGE repeatedly until the desired loop detect setting is displayed.
The choices are:
i. Loop Detect: 48V (factory setting)
ii. Loop Detect: 24V (24 volts)
I ii. Loop Detect: 12V
iv. Loop Detect: OFF
f. Press MENU to exit.
If a line indicator at your 2750 telephone stays lit because there is no telephone line connected, and you
wish to turn it off, do not use this feature, but set this line at this station to UNCONNECTED
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2.5. Ringer Configuration
The ringers for each outside line are controlled individually at each telephone. There are three possible
settings for each line ringer:
RINGER ON: The line will ring normally.
DELAYED RING: The line will start ringing after 20 seconds. This is useful for an office
where the phone is normally answered at a central location.
RINGER OFF: The line will not ring. In all these cases, the line indicators will flash to signal
an incoming call. You can always answer a ringing line, whether or not it is ringing audibly at
your telephone, by pressing the corresponding flashing line button.
2.5.1. To choose how each line will ring:
a. Press MENU. The display will read “Phone Setting”
b. Press the soft key under ENTER.
c. Press the Down Arrow repeatedly until “Ringer Settings” appears in the display.
d. Press the soft key under ENTER. The display will show the current ringer setting for Line 1.
e. Press the soft key under CHANGE repeatedly, until the desired ringer setting for Line 1 is
displayed.
The choices are:
i. L1 Ringer: ON (factory setting)
ii. L1 Ringer: DELAY
iii. L1 Ringer: OFF
f. Press the soft key under DOWN ARROW to see the current ringer setting for Line 2. Repeat
steps c - e to change the ringer settings for Lines 2-4.
g. Press MENU to exit.
2.5.2. Setting Distinctive Ringing
All lines are initially set to ring with Ring Sound #1. If you prefer, you may assign each outside line
one of seven other distinctive ringer tones. To assign distinctive rings to one or more lines:
a. Press MENU. The display will read “Phone Setting”
b. Press the DOWN ARROW repeatedly until ”Distinctive Ring” appears in the display.
c. Press the soft key under ENTER. The display will show the distinctive ring setting for Line 1.
d. Press the soft key under CHANGE repeatedly, until the desired distinctive ring setting for Line
1 is displayed. There are eight choices.
e. Press the DOWN ARROW to see the current setting for Line 2, and repeat steps c and d to
change the settings for Lines 2-4.
f. Press MENU to exit.
Note: At any time when you have a particular distinctive ring setting displayed, you may press the soft
key under CHANGE to hear an example of that distinctive ring.
This feature is usually used in one of four ways:
a. You may want to assign one of your lines its own ring tone and leave the other lines set at the
default ring. For example, if line 3 were a private line at your telephone, you may assign it a
distinctive ring so you could easily recognize calls ringing on your private line.
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b. You may want to assign a particular line the same distinctive ring at all of the stations. For
example, if line 3 were the customer service line, you may assign line 3 the same distinctive
tone at all the telephones so everybody can easily tell when this line is ringing.
c. You may want give all of the lines at your telephone the same distinctive ring so that you can
easily tell when your particular phone is ringing and differentiate it from the ringing of other
nearby telephones.
d. You may give all of your lines the same distinctive ring simply because you prefer that
particular ringing tone.
2.5.3. Setting Off-Hook Ringing
If you set a ringer ON or DELAYED, and a call comes in on that line while you are having a
conversation on another outside line, a double ring will sound every 15 seconds to alert you of the
incoming call. This feature is called “off-hook ringing” and can be turned off if you prefer. To disable
off-hook ringing
a. Press MENU. The display will read “Phone Setting”
b. Press the soft key under NEXT repeatedly until “Off Hook Ring” appears in the display, along
with the current setting.
c. Press the soft key under CHANGE to change the setting.
d. Press MENU to exit.
Note: If a call comes in on an outside line while you are engaged in an intercom call, there will not be
off hook ringing. However the line lamps will flash normally to indicate an incoming call.
2.6. Intercom Call Response
You may set your telephone to respond to intercom calls in one of three ways:
INTERCOM HANDSFREE: When someone makes an intercom call to you, your
telephone will ring once, then give a triple alert tone which lets you know that your phone has
automatically answered the intercom call on speakerphone. You may respond to the call simply
by speaking towards your telephone.
INTERCOM RING: When someone makes an intercom call to you, your telephone will ring
repeatedly with the intercom ring. You may respond to the call by lifting the handset or
pressing the SPEAKER button.
INTERCOM VOICE: When someone makes an intercom call to you, your telephone will
ring once, then give you an alert tone, followed by the caller’s voice. You may respond to
the call by lifting the handset or pressing the SPEAKER button.
Note: When someone makes an intercom call to you while you are on an outside line, you will hear a
single intercom ring regardless of your intercom ringer setting
2.6.1. To choose how your phone will respond to intercom calls:
a. Press MENU. The display will read Phone Setting
b. Press the soft key under ENTER.
c. Press the Down Arrow repeatedly until Intercom Prefs appears in the display.
d. Press the soft key under ENTER. The display will read “Intcm:XXXXXXX”
e. Press the soft key under CHANGE repeatedly, until the desired intercom setting is displayed.
f. Press MENU to exit.
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