Yealink SIP-T19 E2 T4 Series, Руководство администратора

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series IP Phones
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Parameter Permitted Values Default
None
Intercom
Intercom allows establishing an audio conversation directly. The IP phone can answer intercom
calls automatically. This feature depends on support from a SIP server.
Outgoing Intercom Calls
Intercom is a useful feature in office environments to quickly connect with an operator or
secretary. Users can press an intercom DSS key to automatically initiate an outgoing intercom
call with a remote extension.
Intercom can be also used to monitor a specific user for status changes on IP phones. For
example, you can configure an intercom DSS key on a supervisor’s phone to monitor the IP
phone user status (busy or idle). When the monitored user places a call, a busy indicator on the
supervisor’s phone indicates that the user’s phone is in use. When the monitored user is idle, the
supervisor can press the intercom DSS key to automatically connect with a preconfigured target
extension for outgoing intercom calls. When the monitored user receives an incoming call, the
supervisor can press the intercom DSS key to pick up the call directly. To pick up the call, you
have to configure the directed call pickup code in advance. You can configure the directed call
pickup code when configuring an intercom DSS key. IP phones support this feature using a
SUBSCRIBE/NOTIFY mechanism as specified in
RFC 3265 . This feature depends on support from
a SIP server.
Line key/Expansion Module Key LED
(configured as an intercom DSS key)
LED Status Description
Solid green The monitored user is idle.
Fast-flashing red (200ms) The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
Off The monitored user does not exist.