AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 383)

5-106 41-001343-01 Rev 03, Release 3.2.2
Incoming/Outgoing Intercom with Auto-Answer and Barge In
The Intercom feature allows you to press the configured Intercom button on the IP phone and
then enter the number you want to call to initiate an intercom call. Intercom calls can be
controlled either locally (phone-side) or by the SIP server (server-side).
You can configure incoming and outgoing intercom calls on all phone models. A User can
configure incoming intercom calls only.
Outgoing Intercom Calls
On 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. Only an Administrator can configure outgoing intercom calls.
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 outgoing intercom calls, an administrator can configure the following parameters:
Configuration File Parameters Web UI Parameters
• sip intercom type • Type)
• sip intercom prefix code • Prefix Code
• sip intercom line • Line
Note: To configure outgoing intercom calls using these parameters, see
“Configuring Intercom Calls Settings” on page 5-108 .