[asterisk-users] DTMF Relay Problems

[Tony Mountifield]

In article <00e401c7f353$d375db20$7a619160$@co.ug>,
Joseph Begumisa <joe at cfi.co.ug> wrote:
> Thanks.  My results after applying the patch and recompiling are that the
> problem can only be replicated with calls from mobile networks.  Digits like
> 160 entered in the digital receptionist by a caller are received by the
> asterisk server as 16660 sometimes.  Other times it is received as 1660.
> Digits like 1234 are received as 1222334 etc...  From fixed lines, there is
> no problem.  Digits are received as they have been sent.
> 
> Any other pointers?

Hmm, that sounds like a problem with the GSM-to-PSTN gateway that the calls
are passing through.

Unless things are different in Uganda, I believe when a user presses a DTMF
key on their mobile, it doesn't send a tone through the mobile network, but
rather a "start dtmf" control message followed by a "stop dtmf" control
message. When the call gets gatewayed from GSM to the PSTN network, it is
the job of the gateway to generate the tones as instructed by the control
protocol. (Someone please correct me if I'm wrong).

So you may need to take it up with your telco.

Cheers
Tony

> Thanks a lot.
> 
> Joseph
> 
> 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Michiel van
> Baak
> Sent: Sunday, September 09, 2007 12:21 PM
> To: asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] DTMF Relay Problems
> 
> On 12:09, Sun 09 Sep 07, Joseph Begumisa wrote:
> > I applied the patch, however, I'd like to know which particular files to
> > copy after running a make.  I do not wish to run "make install" as it will
> > overwrite other configuration changes I have made.  
> 
> A make install will not overwrite any configfile.
> It will install the asterisk binary and the modules (thus
> overwriting the existing files) but configfiles will only be
> overwritten when you run: make samples
> 
> -- 
> 
> Michiel van Baak
> michiel at vanbaak.eu
> http://michiel.vanbaak.eu
> GnuPG key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x71C946BD
> 
> "Why is it drug addicts and computer afficionados are both called users?"
> 
> 
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-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org