480i, 9133i, 9112i, 480i CT SIP IP Phone
SIP IP Phone Release Notes Version 1.3.1 Page 32 of 44
Additional Features for 480i and 480i CT
5.15 Incoming/Outgoing Intercom Feature with Auto-Answer
(480i/480i CT only)
A new incoming and outgoing Intercom feature complemented by the auto-answer feature has
been added to release 1.3.1 of the IP phones. The Intercom feature allows you to press the Icom
button (]) and then enter the number you want to call to initiate an intercom call which
is controlled either locally (phone-side) or by the SIP server (server-side).
Note: Auto-answer is applicable to all IP phone models, but the Intercom feature is applicable to
the 480i and 480i CT only.
For outgoing intercom calls, an available unused line is found when the Icom button is pressed.
Since this line has no configuration, the phone applies an existing configuration ("Outgoing
Intercom Settings", Line, default is Line 1) to this line in preparation for placing the intercom
call. For example, an outgoing intercom call can use the configuration of line 1 but places the
actual intercom call using line 9.
A phone-side Intercom call indicates the phone is responsible for telling the recipient that an
intercom call is being placed, while a server-side intercom call means the SIP server is
responsible for informing the recipient. Server-side calls require additional configuration of a
prefix code. After pressing the Icom button and entering the number to call, the phone
automatically adds the prefix to the called number and sends the outgoing call via the server.
For incoming intercom calls, you can enable (turn ON) or disable (turn OFF) the microphone
on the IP phone for intercom calls. You can also enable or disable auto-answer. If auto-answer
is enabled on the IP phone, the phone plays a tone to alert the user before answering the intercom
call. If auto-answer is disabled, the phone rejects the incoming intercom call and sends a busy
signal to the caller. By default, the microphone is disabled and auto-answer is enabled.
You can configure the Intercom feature using the Aastra Web UI or the configuration files
(aastra.cfg and <mac>.cfg).
Note: An administrator can configure the incoming and outgoing Intercom feature. A user can
configure the incoming Intercom feature only.
