Polycom SIP 3.1 manual SIP for Instant Messaging and Presence Leveraging Extensions

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. In a future release, support for the Presence and Instant Message recommendations in the SIP Instant Messaging and Presence Leveraging Extensions (SIMPLE) proposals will be provided by the following Internet drafts or their successors:

•draft-ietf-simple-cpim-mapping-01

•draft-ietf-simple-presence-07

•draft-ietf-simple-presencelist-package-00

•draft-ietf-simple-winfo-format-02

•draft-ietf-simple-winfo-package-02

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

B - 10