[Asterisk-Users] RTP send errors

[Michael Welter]

Michael Welter wrote:
> I'm getting the following messages when a call is answered by a SIP device:
> 
> Nov 28 13:03:01 NOTICE[22824]: rtp.c:1146 ast_rtp_raw_write: RTP 
> Transmission error to 192.168.1.254:19262: Operation not permitted
> 
> For a Cisco 7940 line, I have the following sip.conf entry:
> 
> [desk2]
> type=friend
> username=desk2
> secret=xxx
> host=dynamic
> dtmfmode=rfc2833
> context=international
> canreinvite=no
> callerid="xxx"<3034144980>
> mailbox=701 at xxx
> nat=yes
> qualify=yes
> accountcode=xxx
> disallow=all
> allow=ulaw
> allow=g729
> 
> The Asterisk system faces the Internet on a public IP.  The phone is 
> behind NAT.
> 
> Asterisk version is 1.0.7.
> 

It has nothing to do with DTMF.  It is getting a few rejected rtp frames 
from the kernel 'sendto' function immediately after the call is 
answered.  Does anyone offer some insight?

Thanks,