Polycom SIP 3.0.2 manual Shared Call Appearance Signaling, Bridged Line Appearance Signaling

Administrator’s Guide SoundPoint IP / SoundStation IP

SIP for Instant Messaging and Presence Leveraging Extensions

•The phone is compatible with the Presence and Instant Messaging features of Microsoft Windows Messenger 5.1.

Shared Call Appearance Signaling

A shared line is an address of record managed by a call server. The server allows multiple end points to register locations against the address of record.

The phone supports shared call appearances (SCA) using the SUBSCRIBE-NOTIFY method in the “SIP Specific Event Notification” framework (RFC 3265). The events used are:

•“call-info” for call appearance state notification

•“line-seize for the phone to ask to seize the line

Bridged Line Appearance Signaling

A bridged line is an address of record managed by a server. The server allows multiple end points to register locations against the address of record.

The phone supports bridged line appearances (BLA) using the SUBSCRIBE-NOTIFY method in the “SIP Specific Event Notification” framework (RFC 3265). The events used are:

•“dialog” for bridged line appearance subscribe and notify

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