asterisk users - May 2006 - [SOLUTION] DTMF Tones occures in Asterisk

I got a Problem with DTMF occuring channelwide in my SIP/ZAPPhones.

I want to post the Solution for this, so others can find it and help
themself.

Problem : DTMF Tones like "9" "*" "#" been sent
randomly in the middle
of my conversations.
That was distracting and sometimes a bad DTMF Tone like "*" or
"#" could
do more than i believe ;)

I cant figure out why there a occure and how.
Tracing : Activate the LOG for DTMF Tones in Asterisk itself. (logger.conf)

Solution : Check your Kernel Version, i used 2.6.8-2-386 with Debian
Sarge, i have updated Debian with the "backports" in the sources.list
,
easy, safe and fast, recompiled the whole asterisk and addons and i cant
believe, no dtmf anymore !

If you are in need - post back.

Best Wishes,

Stefan from Germany in school english!

Stefan Agethen schrieb:
>I got a Problem with DTMF occuring channelwide in my SIP/ZAPPhones.
>
>I want to post the Solution for this, so others can find it and help
>themself.
>  
>
[...]

I have updated my Kernel and the first day it seems like my problem was
solved, but its not.

Problem : DTMF Tones occuring on every kind of channel (SIP/ZAP/mISDN)
randomly in the middle of a conversation.
Cant reproduce the Situation, but i can log them with DTMF Log of
Asterisk (logger.conf) :

May 10 15:30:19 DTMF[25551] channel.c: SIP/10-e68c : 1
May 10 15:31:00 DTMF[25551] channel.c: SIP/10-e68c : 1
May 10 15:31:50 DTMF[25551] channel.c: SIP/10-e68c : 1
May 10 15:32:25 DTMF[25551] channel.c: SIP/10-e68c : 1
May 10 17:00:33 DTMF[26110] channel.c: SIP/10-6bcf : 5
May 10 17:06:06 DTMF[26174] channel.c: SIP/30-bcc1 : 5
May 11 06:10:06 DTMF[3633] channel.c: SIP/50-e11c : 9
May 11 08:09:41 DTMF[4853] channel.c: SIP/50-a9b8 : A
May 11 08:18:13 DTMF[4945] channel.c: SIP/20-8c2f : C
May 11 08:19:46 DTMF[4999] channel.c: SIP/50-42fb : 9

The whole day long this problem appears and in the baddest case Asterisk
get a "#" or "*" and some features get started like MOH and
so on.
I have disabled this features in the most cases, but still i get the
Tones while talking :-(

Please help ! Cant find any solution Internetwide !

I use DTMF RFC2833 for snom and ZAPs - INFO for my Allnet-Sips.

Will give any info if someone try to help !

Best wishes,

Stefan

The problem is called "talkoff".  Search the mailing list archives. 
Also post your sip.conf and zaptel.conf (sans passwords, of course)

Stefan Agethen wrote:
> Stefan Agethen schrieb:
> 
>> I got a Problem with DTMF occuring channelwide in my SIP/ZAPPhones.
>>
>> I want to post the Solution for this, so others can find it and help
>> themself.
>>  
>>
> [...]
> 
> I have updated my Kernel and the first day it seems like my problem was
> solved, but its not.
> 
> Problem : DTMF Tones occuring on every kind of channel (SIP/ZAP/mISDN)
> randomly in the middle of a conversation.
> Cant reproduce the Situation, but i can log them with DTMF Log of
> Asterisk (logger.conf) :
> 
> May 10 15:30:19 DTMF[25551] channel.c: SIP/10-e68c : 1
> May 10 15:31:00 DTMF[25551] channel.c: SIP/10-e68c : 1
> May 10 15:31:50 DTMF[25551] channel.c: SIP/10-e68c : 1
> May 10 15:32:25 DTMF[25551] channel.c: SIP/10-e68c : 1
> May 10 17:00:33 DTMF[26110] channel.c: SIP/10-6bcf : 5
> May 10 17:06:06 DTMF[26174] channel.c: SIP/30-bcc1 : 5
> May 11 06:10:06 DTMF[3633] channel.c: SIP/50-e11c : 9
> May 11 08:09:41 DTMF[4853] channel.c: SIP/50-a9b8 : A
> May 11 08:18:13 DTMF[4945] channel.c: SIP/20-8c2f : C
> May 11 08:19:46 DTMF[4999] channel.c: SIP/50-42fb : 9
> 
> The whole day long this problem appears and in the baddest case Asterisk
> get a "#" or "*" and some features get started like MOH
and so on.
> I have disabled this features in the most cases, but still i get the
> Tones while talking :-(
> 
> Please help ! Cant find any solution Internetwide !
> 
> I use DTMF RFC2833 for snom and ZAPs - INFO for my Allnet-Sips.
> 
> Will give any info if someone try to help !
> 
> Best wishes,
> 
> Stefan
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>>> I got a Problem with DTMF occuring channelwide in my SIP/ZAPPhones.
>> I have updated my Kernel and the first day it seems like my problem
>> was solved, but its not.
> The problem is called "talkoff".  Search the mailing list
archives.
> Also post your sip.conf and zaptel.conf (sans passwords, of course)
Thx, now got my problem a name!

Here is my sip.conf and zaptel.conf :

SIP---
[general]
port = 5060
bindaddr = 0.0.0.0
externhost=agethen.no-ip.org
localnet=10.0.0.0/255.255.255.0
srvlookup=yes
fromdomain=10.0.0.60
language=de
tos=0x18
nat=yes
disallow=all
allow=alaw
allow=g726
defaultexpirey=3600
maxexpirey=3600
<<REGISTER-STATEMENTS>>
register=xx:xx@sip.pbx-network.de/xx
[pbx1]		;VOIP Provider
bindport=5060
username=xx
type=peer
secret=xx
qualify=no
insecure=very
host=sip.pbx-network.de
fromuser=xx
fromdomain=pbx-network.de
context=voip_eingehend
canreinvite=no
dtmfmode=info
tos=0x18
[...] Now there are many SIP Phone and VOIP Provider Contexts - too much
for here, i think.

ZAPTEL---
fxoks=1
fxoks=2
fxoks=3
fxoks=4
loadzone= de
defaultzone= de

Can RelaxDTMF do something for me ?

Best wishes,

Stefan