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
On Wednesday 20 May 2009 16:08:11 Simon Muyal wrote:
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.
If DTMF mode is set to RFC2833 or RTP, Kamailio have nothing to do with it.
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)
It's not a matter of Kamailio, it's a matter of SIP config on the UA side, you must set DTMF mode to SIP-INFO if you want that it travels throught Kamailio as SIP traffic.
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Raúl Alexis Betancor Santana -
Simon Muyal