[Kamailio-Users] DTMF and Kamailio

[Simon Muyal]

Hello,

I have the following topology:

IPphones <-> IPBX-1 <->          <-> IPBX-A <-> IPphones
IPphones <-> IPBX-2 <-> KAMAILIO <-> IPBX-B <-> IPphones
...
IPphones <-> IPBX-N              <-> IPBX-X <-> IPphones

version: kamailio 1.4.1-notls (i386/linux)

I experienced problems regarding DTMF digits transport. DTMF is 
transported through RTP data and it is not recognized at the end.

Does anyone could recommend me how to force the negotiation between 
Kamailio and IPBXs to be sure that IPphones and IPBXs will use another 
method to transport DTMF (like OOB SIP INFO or RFC2833)

Many thanks,
Simon
-- 
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Simon Muyal
Suivi des Services aux Usagers (SSU)
Services operations & support

             Réseau National de Télécommunications
      pour la Technologie, l'Enseignement et la Recherche

Tel:    +33 (0) 1 53 94 20 40  |  GIP RENATER
Fax:    +33 (0) 1 53 94 20 41  |  c/o ENSAM
E-mail: muyal at renater.fr       |  151 Boulevard de l'Hôpital
http://www.renater.fr          |  75013 PARIS
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