Aastra Telecom 53I - Manual (Page 90)

Sylantro Interoperability Features
84 RN-001029-00, Rev 03, Release 2.1
IP Phone Release Notes 2.1
Incoming Intercom Calls
You can configure how the phone handles incoming intercom calls. You can
receive incoming intercom calls whether or not there are active calls on the phone.
The way the phone handles the call depends on the incoming intercom call
configuration. The following paragraphs describe the configuration parameters for
incoming intercom calls.
Microphone Mute
You can mute or unmute the microphone on the IP phone for intercom calls made
by the originating caller. If you want to mute the intercom call, you enable this
feature. If you want to unmute (or hear the intercom call), you disable this feature.
Auto-Answer/Play Warning Tone
The auto-answer feature on the IP phone allows you to enable or disable
automatic answering for an Intercom call. If “Auto-Answer” is enabled, the phone
automatically answers an incoming intercom call. If “Play Warning Tone” is also
enabled, 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.
Allow Barge In
You can configure whether or not the IP phone allows an incoming intercom call
to interrupt an active call. The “sip intercom allow barge in” parameter controls
this feature. When you enable the sip intercom allow barge in parameter
(1 = enable in the configuration files), which is the default value, an incoming
intercom call takes precedence over any active call, by placing the active call on
hold and automatically answering the intercom call. When you disable this
parameter (0 = disable in the configuration files), and there is an active call, the
phone treats an incoming intercom call like a normal call and plays the call
warning tone. You can set this parameter using the configuration files or the
Aastra Web UI.