Cortelco 2757 manual

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Before the third party answers, you may drop the call by pressing ‘End’. The original party will then return as a new call. Press ‘Answer’ to return to the conversation.

After the connection is made, you will see the following message displayed on LCD screen. If the third party refuses the conference call and hangs up, the second party will return as a new call. Press ‘Answer’ to resume this call. This will also happen if you dial an invalid number for the third party.

If the third party agrees to the conference, press ‘3-way’. You will see the following message displayed on the LCD screen, and the 3-way conference will be established.

Either the second or third party may drop off the conference at any time and the call between the originator and the other party will continue. However, if the originator drops the call, all parties will be disconnected.

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Contents VoIP Phone Users Guide Table of Contents 10.1 Recover from Unsuccessful Firmware Update Features Package ContentsBasic Setup Page Static IP Address Network SetupPage Described above to enter the subnet mask PPPoE Page Page Page Dhcp Page Display IP Address Network Setup Web ConfigurationWeb Interface Network Configuration Page Page SIP Server Information Setup Page Page Page SIP Server Information Setup Web Configuration Page Accepting phone calls Accepting and Making Phone Calls In-Call Options Transfer TrfrAttended Transfer Blind Transfer 2.2 3-wayPage Hold LineMaking phone calls Caller ID on Call Waiting Calling History Unanswered Calls Missed CallsReceived Calls Placed CallsSpeakerphone and Headset Call Rejection DNDPlacing Calls Receiving CallsHeadset Speed DialCall Forwarding Advanced SettingsEnd of Dial Key Handset Volume/Handsfree Volume/Headset VolumeRing Volume Forward TimerSet Time Zone Entry of Call Forward numbers from phoneNTP Server Address Web Interface Phone Book ManagementPhone Interface Page LCD screen Browse System InformationClick ‘Status’ Page Change Display Language Change Ringer Type Adjust the Contrast of LCD Screen Page Reboot the IP Phone Click on ‘Management’ Factory Reset Click ‘Management’ Change Password for the Web Interface Troubleshooting Upgrade Procedure Firmware UpdateRecover from Unsuccessful Firmware Update