Hi Anton,
This should be possible, however not out-of-the box... The main issue is
that SEMS is not (yet) used to send INVITE without SDP offer. However,
as you are looking for a signaling only application (SEMS does not
handle any media itself), it should be possible with little
modifications. Concerning the "click" part of the "click-to-dial", the
easiest way is to define a DI interface for your application plug-in,
and use the xmlrpc2di plug-in to make this interface available over
XMLRPC. Then, it should be a child's play to get your functions called
from some PHP code.
If things do not work as expected, or if you need some help for the
coding itself, please use the [email protected] mailing list.
Hoping this helps and we gained another SEMS user ;-)
-Raphael.
On 21.01.2010 09:38, Anton Roman wrote:
Hi all,
I'm getting introduced to SEMS (congrats to the developers, it's a
very nice piece of software) but before going deeper into the
documentation I'd like to know if it's possible to set up the scenario
below for a click2dial application with SEMS acting as B2BUA:
4.4. Flow IV
A Controller B
|(1) INVITE offer1 | |
|no media | |
|<---------------------| |
|(2) 200 answer1 | |
|no media | |
|--------------------->| |
|(3) ACK | |
|<---------------------| |
| |(4) INVITE no SDP |
| |--------------------->|
| |(5) 200 OK offer2 |
| |<---------------------|
|(6) INVITE offer2' | |
|<---------------------| |
|(7) 200 answer2' | |
|--------------------->| |
| |(8) ACK answer2 |
| |--------------------->|
|(9) ACK | |
|<---------------------| |
|(10) RTP | |
|.............................................|
Figure 4
It's the flow 4 from RFC3725 (http://www.ietf.org/rfc/rfc3725.txt),
and it is the recommended one when only both sides (A and B) are
humans (I mean "not media servers"). Is it possible to initiate a
session without media and then bridge the call to another one with
SEMS? I've already tried with other 3pcc flows such as Flow II (in
RFC3275 as well) which can be easily set up with the OpenSIPS B2BUA
modules, but that flow doesn't meet my costumer's requirements.
Best regards.
Thanks in advance.
Antón Román
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