Cortelco 2750 instruction manual Appendix D, Trouble Shooting Guide

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APPENDIX D

Trouble Shooting Guide

TROUBLE SHOOTING GUIDE

If you are having problems with your 2740 or 2750 telephone, please review the problems listed below
and their solution. You may call 662-287-5281 and request a technician to work though your problem

No Display or Lamps	Make sure that the Power Transformer is plugged into an electric
	socket not controlled by a wall switch
No Dial Tone	Check all line connections. If possible check your jack wiring by
	testing a non-system telephone at the jack in question. If a
	standard telephone does not work, then the local telephone
	company lines or your house wiring may be causing the problem
The LED's are Flashing and the	Press soft key “Change” to assign this telephone a station number.
Display reads “Station #??”
There is no dial tone on the	Replace the handset from another 2750 telephone. If this solves
handset, but the speakerphone
works.	the problem, then contact Technical Support for assistance.
The Intercom does not work	The problem may be with your installation. Make sure that the
	lines are installed correctly and that line 1 is common on all
	system telephones.
or	The cause of this problem may be from outside interference.
The telephone does not show the	The cause of this problem may be from outside interference.
status of other telephones	Disconnect line one at the cable terminal. If this solves the
	problem, then the interference is coming from the telephone
	company.
or	This problem may also be caused by DSL Microfilters. Never
There is a delay in getting dial tone	This problem may also be caused by DSL Microfilters. Never
	connect a line that has a DSL Circuit on Line 1.
or	The problem may be caused by one defective telephone.
The Telephone remains on hold	The problem may be caused by one defective telephone.
after the call is picked up at	Disconnect one instrument at a time to determine if a particular
another station.	telephone is causing the problem
Crosstalk or other interference	The most common cause of crosstalk is the use of flat cable. Be
	sure to use supplied line cords. You must use twisted-pair line
	cords.
The line LED flashes when a call	Make sure that the Ringer is on and that “Do Not Disturb” is off.
comes in, but the telephone does
not ring.
The telephone does not operate	Make sure that fresh AAA batteries are installed in base.
during a power outage	Make sure that fresh AAA batteries are installed in base.
The battery icon stays lit in display	Make sure that fresh AAA batteries are installed in base.
You cannot join a telephone call in	The Call Privacy feature prevents another 2740 or 2750 from
progress	interrupting a call in progress. If you don't want Call Privacy in your
	system, then go into system programming on station 01 and turn it
	off.
The telephone line status	If this line is not connected, then program it as unconnected. If
indicators stay lit, even thought the	this line is connected and you have dial tone, then adjust loop
line is not in use.	voltage detector setting.

52	2750 User Guide Version 1.3

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Contents OWNER’S Instruction Manual Table of Contents Memory Settings Iii User Guide Version Using Your Telephones Answering System Using Stanard Telephones Thank YOU For Purchasing Feature List User Guide Version Important Safety Instructions Unpacking and Installation Box ContentsTelephone Part Identification Standard Installation Identify Your Existing Wiring SystemPlan Your Installation Installations with Private Lines and Unconnected LinesAssign a Station Number Install Batteries OptionalConnect Cords to Telephone Station Number Assignment Verify Proper InstallationSystem Programming Station Name AssignmentLine Configuration/Type Loop Voltage Detector To Set Connections/ConfigurationTo Set Loop Voltage Detector Setting Distinctive Ringing Ringer ConfigurationTo choose how each line will ring Intercom Call Response Setting Off-Hook RingingTo choose how your phone will respond to intercom calls To Set Automatic Line Selection To set the system’s toll restriction access codeAutomatic Line Selection Toll RestrictionTo completely restrict specific lines at a telephone RestrictedTo set the allowed numbers at a particular telephone System PrivacyDialing Mode To Change the Privacy SettingArea Codes Memory Settings To Store Caller ID Records Storing a Caller ID number into memoryTo store a personal directory dial number To Store the Centrex PrefixErase Numbers Stored in Memory Erase All Feature SettingsReset Default Settings Erase Toll RestrictionsMiscellaneous Settings Caller ID on Call Waiting Cidcw Sensitivity Adjusting Auto Hold Drop TimeAdjusting Flash Timer Hold Call ReminderAnswering System Changing your OGM Setting Your Telephones Pickup DelaySetting Toll Saver New Message BeepRemote Code Setting Message LengthAuto-Attendant Record your Auto Attendant Day OGM Set up the Auto AttendantRecord your Auto Attendant Night OGM Night Timer Set Setting Auto Attendant Pickup DelayRecord your Auto Attendant Zero-Out OGM Setting Separate Auto Attendant OGMs for Different Lines Setting More Than One Phone as an Auto AttendantUsing Additional Auto Attendant OGMs To record additional Auto Attendant OGMChoosing the Zero-Out Action All Transfer FeatureTurn Off the Auto Attendant on One or More Lines Leave a Message at the Auto AttendantTransfer Direct to Voice Mail Summary of Auto Attendant ActionsTelephone Operation Outside Calls Answering a call on another lineConference Outside Call with Intercom StationPersonal Ring Blind TransferTransfer Ring Caller IDDeleting Numbers Volume LevelsDialing Calls RingerSpeakerphone Accessing MessagesResetting MSG Lamp Intercom SpeakerDo Not Disturb DND FlashMute Line ReserveToll Restriction Removal Single Call Timer Elapsed Call TimeCall Privacy Toll Restriction Removal Single StationHeadset Timer ResetElapsed Call Time Previous Calls Directory CardAnswering Intercom Calls Intercom Ring Intercom while IdleIntercom while on an Outside Call Intercom VoiceBlocking Pages AllAnswering Pages Single Room MonitoringStop Message Playback Using Your Telephones Answering SystemListening to your Messages Play Messages Pause Message PlaybackSkip to the next Message Using Dial PadRepeat a Message Jump backRecording a Memo or Conversation Erasing Messages To Erase a MessageTo Erase All Messages Recording a Telephone ConversationLine Status and Calls on Hold Using Stanard TelephonesTo Repeat an Auto Attendant OGM IntercomPower Failure Operation Battery ReplacementBatteries Appendix a Phone SettingsMenu Tree ON/OFF Answer Settings Menu Options SUB Menu DefaultTime and Date Settings Memory SettingsAdvanced Settings Installation Worksheet Appendix BAppendix C Toll Restriction WorksheetTrouble Shooting Guide Appendix DFCC Information Telephone Repair Limited Warranty Repair Center Sawyer Road Corinth, Mississippi