[Asterisk-Users] DTMF from TE410P to SIP devices doesn't work

Tue Nov 2 02:17:38 MST 2004

Hi Guys,

I have this problem that when a caller from my E1's get's connected to a SIP devices and sent DTMFs. the SIP device is unable to detect the DTMF's sent. You can hear a very small portion of the DTMF sent, but not enough for the device to tell what it is.

If the call is between SIP to SIP there's no problem at all (set to RFC 2833). 

Kind Regards

Claus Futtrup
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