[Asterisk-Users] Musical interruptions

[Brian Cuthie]

You know, I've seen something that may be related. We occasionally get 
DTMF inserted into the middle of a call, when no party on either end has 
pushed any buttons. I suspect something goes wrong and some data packet 
is mistakenly believed to contain out-of-band DMTF signalling and the * 
box is faithfully inserting it into the stream. But this is just a total 
guess. Perhaps you're seeing another manifistation of the same issue.

-brian

Mark Elkins wrote:

>Whilst on a call, I'm getting the following...
>
>    -- Started music on hold, class 'default', on SIP/phone3-a7d5
>    -- Playing 'pbx-transfer' (language 'en')
>    -- Unable to find extension '#' in context 'default'
>    -- Playing 'pbx-invalid' (language 'en')
>
>ie - without anyone pushing keys - I hear the music on Hold - as does
>the calling party.
>
>Are we somehow managing to sound like the tone for a '#' ????
>My BT100 phone is set up for DTMF=info
>
>This appears to happens quite randomly.  Suggestions?
>
>I'm also getting quite a few...
>May 12 19:51:52 WARNING[98311]: chan_sip.c:542 retrans_pkt: Maximum
>retries exceeded on call 048449ee0dd198e304320aa505148a76 at 160.124.48.24
>for seqno 152 (Non-critical Request)
>May 12 19:51:58 WARNING[98311]: chan_sip.c:542 retrans_pkt: Maximum
>retries exceeded on call 048449ee0dd198e304320aa505148a76 at 160.124.48.24
>for seqno 153 (Non-critical Request)
>May 12 19:52:03 WARNING[4866068]: rtp.c:414 ast_rtp_read: RTP Read
>error: Resource temporarily unavailable
>May 12 19:52:03 WARNING[4866068]: rtp.c:414 ast_rtp_read: RTP Read
>error: Resource temporarily unavailable
>
>.. but am putting that down to running this extension (SIP Phone) over
>multiple 802.11 segments - in a semi-hostile environment. (I'm not the
>only person using 802.11 - there may be channel clashes)
>
>  
>