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IP Phone Call Appearances

IP Phone Call Appearances

Multiple call appearances are needed on phones to use features like transfer and conference.  Here is a list of how many call appearances are available on a line key of a given phone.  By default the phone configuration generated by a NetVanta 7100 for an IP phone will include 2 line keys.  If you wish to do a 3 way conference or have the ability to answer more than two incoming calls additional line keys will be needed to accommodate more call appearances.

ADTRAN IP 700 Series

1 call appearance per line key

ADTRAN Polycom Series

2 call appearances per line key

ADTRAN Softphone

There is no concept of a line key but 6 call appearances are available for the softphone to use

NOTE: These numbers are not an indication of the call capacity for each phone.

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Last update:
‎03-13-2012 01:03 PM
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