[Asterisk-Dev] chan_sip

[harry gaillac]

I'm not a developer but i want to understand why IM
and presence do not work with my polycom ip phones .
MWI and voicemail is ok.

Even asterisk is not a proxy server is it possible to
implement those features SIMPLE ?

Does SER support SIMPLE ?

harry

from polycom :
5.2.3 SIP for Instant Messaging and Presence
Leveraging
Extensions (SIMPLE)
The phone is compatible with the Presence and Instant
Messaging features of Windows
® 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


 --- "Olle E. Johansson" <oej at edvina.net> a écrit : 
> Nick Bachmann wrote:
> > Kevin P. Fleming wrote:
> > 
> >>> chan_sip support INVITE,ACK,...method why not
> MESSAGE
> >>> ??
> >>
> >>
> >> MESSAGE is not really something Asterisk will be
> able to support 
> >> easily, because Asterisk is not a SIP proxy.
> > 
> Actually, we support MESSAGE within the context of a
> call.
> Text messages is handled by Asterisk in the IAX2 and
> SIP channels.
> 
> What we currently do not handle is IM like MESSAGE
> or SIMPLE outside
> of the context of an Asterisk call. This can be
> done, but requires some
> work. Again, a good bounty would be a carrot to run
> for.
> 
> And keep remembering what Nick said, Asterisk is not
> a SIP proxy.
> /O
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