[asterisk-users] Movistar sip Mexico

[Larry Moore]

On 21/11/2013 3:32 AM, Damian Gonzalez wrote:
> Hello,
>
> I have a problem with movistar in Mexico with a sip calls. Movistar send
> to me T38 and G729 in the INVITE and they say that I have to ignore T38
> and use G729 in the voice call.
>
> When a fax call is made Movistar send only T38 in the INVITE.
>
> Invite example:
>
> v=0
> o=GDL-BMSW-12D 19913379 19899826 IN IP4 192.168.1.2
> s=sip call
> c=IN IP4 192.168.1.2
> t=0 0
> m=audio 6370 RTP/AVP 18 101
> a=fmtp:18 annexb=yes
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=ptime:20
> m=image 6372 udptl t38
> a=T38FaxVersion:0
> a=T38FaxMaxBuffer:1100
> a=T38FaxMaxDatagram:612
> a=T38MaxBitRate:14400
> a=T38FaxRateManagement:transferredTCF
> a=T38FaxUdpEC:t38UDPRedundancy
>
> How can I  ignore T38 and use only G729 for this call?.
>
> Thanks for your help.
>
> Damian
>
>

Perhaps you could add the following to the peer configuration

faxdetect=no

Larry.