Displaying 1 result from an estimated 1 matches for "ast_digit".
2003 Aug 01
2
DTMF modes and external IVR systems over ISDN
Hello,
I'm trying to understand why when I make a call from a SIP phone to an
external number who has an IVR system in which I've to choose some options
using the dialpad, it does'nt recognise the key pressed and remains still
waiting for my choose.
I'm tryng using Grandstream 102, and i've tryed with all the 3 modes
possibile:
Dtmf inband, rfc2833 and INFO (obviously