Hello
I have done the following test-network:
IP-Phone <=====> ASTERISK <======> ISDN <====> PSTN Phone
(SIP) +
SER
When I'm calling from the PSTN phone to the IP (SIP) phone:
I cannot get ANY DTMF from PSTN, they seem destroyed by the codec (small
scratches).
I listen DTMF from IP-Phone (SIP INBAND!)
When I'm calling from SIP phone to PSTN:
Same result, no PSTN => IP DTMF !
Any ideas ?
Thanks!
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