[asterisk-users] Is "a=fmtp:101 0-15" a legal option in SDP ?

[Raj Jain]

On Mon, Feb 9, 2009 at 4:43 PM, Olivier <oza-4h07 at myamail.com> wrote:
>
> Hi,
>
> My patton 4638 is sending :
> v=0
> o=MxSIP 0 46 IN IP4 192.168.100.52
> s=SIP Call
> c=IN IP4 192.168.100.52
> t=0 0
> m=audio 4984 RTP/AVP 8 101
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=sendrecv
> m=image 4986 udptl t38
> a=T38FaxUdpEC:t38UDPRedundancy
> a=sendrecv
>
>
> Asterisk (1.4.22.1) replies :
> Got unsupported a:fmtp in SDP offer
>
> Shall I care ?

This error is somewhat benign. Basically, the end-point is telling
that it can receive RFC 2833 events in the range of 0-15 (DTMF tones)
and Asterisk is ignoring that range.

--
Raj Jain