Polycom SIP 2.2.0 manual Multiple Call Appearances, Shared Call Appearances

Configuring Your System

Multiple Call Appearances

The phone supports multiple concurrent calls. The hold feature can be used to pause activity on one call and switch to another call. The number of concurrent calls per line key is configurable. Each registration can have more than one line key assigned to it (refer to the previous section, Multiple Line Keys per Registration).

Configuration changes can performed centrally at the boot server or locally:

Central	Configuration file:	Specify the default number of calls that can be active or on hold per
(boot server)	sip.cfg	line key.
		• For more information, refer to Call Handling Configuration <call/>
		on page A-55.
	Configuration file:	Specify per-registration the number of calls that can be active or on
	phone1.cfg	hold per line key assigned to that registration. This will override the
		default value specified in sip.cfg.
		• For more information, refer to Registration <reg/> on page A-84.
Local	Web Server	Specify the default number of calls that can be active or on hold per
	(if enabled)	line key and the number of calls per registration that can be active or
		on hold per line key assigned to that registration.
		Navigate to http://<phoneIPAddress>/appConf.htm#ls and
		http://<phoneIPAddress>/reg.htm
		Changes are saved to local flash and backed up to <Ethernet
		address>-phone.cfgon the boot server. Changes will permanently
		override global settings unless deleted through the Reset Local
		Config menu selection and the <Ethernet address>-phone.cfgis
		removed from the boot server.
	Local Phone User	Specify per-registration the number of calls that can be active or on
	Interface	hold per line key assigned to that registration using the SIP
		Configuration menu. Either the Web Server or the boot server
		configuration files or the local phone user interface should be used to
		configure registrations, not a mixture of these options. When the SIP
		Configuration menu is used, it is assumed that all registrations use
		the same server.

Shared Call Appearances

Calls and lines on multiple phones can be logically related to each other. A call that is active on one phone will be presented visually to phones that share that call appearance. Mutual exclusion features emulate traditional PBX or key system privacy for shared calls. Incoming calls can be presented to multiple phones simultaneously. This feature is dependent on support from a SIP server that binds the appearances together logically and looks after the necessary state notifications and performs an access control function. For more information, refer to Shared Call Appearance Signaling on page B-10.

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