5 Oct
2004
5 Oct
'04
2:52 p.m.
At 01:34 PM 10/5/2004, Franklin, Allen wrote:
Can I use the app server functionality of SER to
initiate a SIP call?
In order to initiate a SIP call, the app needs to be able to specify RTP
parameters to go into SDP bodies of SIP messages, and to have access to
the SDP info returned by the callee.
Some entity (SER or the app?) needs to do SDP negotiation.
I don't see mention of this in the SER docs.
Am I asking for something that SER does not support?
Yes. SER is a proxy server -- it cannot initiate calls. Only a B2BUA
such as AA can.
-jiri
-----Original Message-----
From: Jiri Kuthan [mailto:jiri@iptel.org]
Sent: Monday, October 04, 2004 7:11 PM
To: Franklin, Allen; serusers(a)lists.iptel.org
Subject: Re: [Serusers] Summary of using SER as an app server
At 12:51 AM 10/5/2004, Franklin, Allen wrote:
--
Jiri Kuthan http://iptel.org/~jiri/
A very basic hook is provided that allows a script
to call functions in a user-provided shared library,
but this hook is only useful for rewriting the URI of the "current" message.
Thats incorrect. The shlibs can do and do much more than URI rewriting. See module list
and what they do.
SER does not allow scripts or app server processes
to see or modify the SDP, so an app
server process could not be used to initiate a voice call.
There are modules that do SDP mangling. nathelper for example.
SER does not have a SIP parser as would be found
in a traditional SIP stack.
I don't know what a traditional SIP stack is but if you mean something slow
that SER doesn't have it ;) It is not available as a separate library if you
mean that.
Otherwise your assessment has been correct. If you are looking for a real
application server (meaning a stateful call control element) than it is
not SER. We have AA (www.iptel.org/aa).
-jiri
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5 Oct
5 Oct
6:01 p.m.
New subject: [Serusers] Summary of using SER as an app server
Jiri Kuthan wrote:
At 01:34 PM 10/5/2004, Franklin, Allen wrote:
or any other application behind ser which uses ser's SIP stack via the FIFO.
e.g. the click-to-dial or IM-send application in serweb.
klaus
Can I use the app server functionality of SER to
initiate a SIP call?
In order to initiate a SIP call, the app needs to be able to specify RTP
parameters to go into SDP bodies of SIP messages, and to have access to
the SDP info returned by the callee.
Some entity (SER or the app?) needs to do SDP negotiation.
I don't see mention of this in the SER docs.
Am I asking for something that SER does not support?
Yes. SER is a proxy server -- it cannot initiate calls. Only a B2BUA
such as AA can.
6 Oct
6 Oct
4:07 a.m.
New subject: [Serusers] Summary of using SER as an app server
Thanks for reminding me -- that's indeed an aproach which, if appplicable,
I like better. No call state, much more end-2-end. Initiating a call by
a B2BUA has quite some issues (ringing to name at least some).
-jiri
At 12:01 AM 10/6/2004, Klaus Darilion wrote:
or any other application behind ser which uses
ser's SIP stack via the FIFO.
e.g. the click-to-dial or IM-send application in serweb.
klaus
--
Jiri Kuthan http://iptel.org/~jiri/
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2 comments
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Jiri Kuthan -
Klaus Darilion