Administrator’s Guide SoundPoint IP / SoundStation IP
B - 10
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
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