[asterisk-users] DTMF not recognized on ISDN with Siemens -not IP- phone

[Paul Hales]

The current Digium BRI cards need the phones to send DTMF over as
SIP-INFO. 
Not sure why, but googling should help. (I think this is even covered on
the Digium site)

PaulH


On Wed, 2007-11-28 at 09:47 +0100, Administrator TOOTAI wrote:
> Good day all,
> 
> we have following setup: Debian Etch 64, Asterisk SVN-branch-1.4-r66244 
> with mISDN 1.1.3 and 2 Digium cards B410P. Our customers calls in the 
> office through ISDN lines and then get a possibility to join meetme 
> conference. It works well except when customers are using SIEMENS phones 
> (not IP): DTMF is not recognized.
> 
> Does someone have an idea on what could be the problem with those phones?
> 
> Thanks for any help
>