After reading through the rfc http://www.ietf.org/rfc/rfc2976 and cisco
site
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t11/ftinfo.htm
And googling a bit I can not find anything that look out of place, I
notices a few formating difference on examples I have seen and most
examples have a content-length: 26 but I don't think that should
matter, and the rfc does not look like there is any rtp needed for info
application/dtmf-relay packets. Could if be as simple and the space
after the "="????
INFO sip:201 at 192.168.1.38 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.36:5060
From: <sip:101 at 192.168.1.36>;tag=43
To: <sip:201 at 192.168.1.38>;tag=9753
Call-ID: 100450864100 at 192.168.1.36
CSeq: 3 INFO
Content-Length: 26
Content-Type: application/dtmf-relay
Signal= 2
Duration= 110
James Sizemore wrote:> I have a beta1 gateway with a 4 port card in PRI mode, the gateway sends
> DTMF via sip info packets to another beta1 box. The peer is set to
> receive info. What I get is a click sound and a very very short tone.
> Sound like to me that I get the first part of the tone before it is
> captured and put in the info packet, but the gateway never seems to send
> the tone, the packet that gets sent looks like this:
>
> --------------
>
> <-- SIP read from 192.168.117.4:5060:
> INFO sip:6152214215@192.168.69.254 SIP/2.0
> Via: SIP/2.0/UDP 192.168.117.4:5060;branch=z9hG4bK7bd677b8
> From: "WIRELESS CALLER"
<sip:6155555917@192.168.117.4>;tag=as37dd610c
> To: <sip:6155554215@telco99.domain.net>;tag=as3af9dc41
> Contact: <sip:6155555917@192.168.117.4>
> Call-ID: 07835bb010df3704529f9f953e0d49fa@192.168.117.4
> CSeq: 120 INFO
> User-Agent: ISDN-NET Voip Gateway
> Content-Type: application/dtmf-relay
> Content-Length: 24
>
> Signal=5
> Duration=500
>
> ---------------
>
> I know it is not the receiving box messing things up as I get the same
> short short DTMF sound on a cisco IAD. Something is wrong with this
> packet but I just can't see it!!! Is there any rtp that gets sent,
> anyone know what the Content-length does?
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