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Operational Features
41-001160-00, Release 2.1, Rev 04 5-61
Configuring Operational Features
Operational IP Phone Features
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.
“Delay” before Auto-Answer
The IP Phones include support for the "delay" parameter (in the Alert-Info header,
used in conjunction with info=alert-autoanswer) in order to facilitate auto-answer
functionality. When present, the value of the "delay" parameter specifies the
length of time in seconds an IP phone rings before a call is auto-answered. If this
value of the "delay" parameter set to 0 (delay=0), then an incoming call is
immediately auto-answered. The absence of the parameter is considered as ring
forever.
In order for the delay functionality to operate, you must first enable Auto-Answer
on the IP Phone.