Polycom IP 300 Guía Del Usuario

Administrator Guide - SoundPoint

IP / SoundStation

Session Initiation Protocol (SIP)

139

5.2.3 SIP for Instant Messaging and Presence Leverag-

ing Extensions (SIMPLE)

The phone is compatible with the Presence and Instant Messaging features of Win-
dows

Messenger

and MSN

Messenger 4.7 and Windows

Messenger

5.0. In a

future release, support for the Presence and Instant Message recommendations in the
SIP SIMPLE proposals will be provided:

•   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

or their successors.

5.2.4 Shared Call Appearance Signaling

A shared line is an address of record managed by a server. The server allows multiple
endpoints 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

5.2.5 Bridged Line Appearance Signaling

A bridged line is an address of record managed by a server. The server allows multi-
ple endpoints 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