[Asterisk-Users] DTMF skipped when calling from ISDN to SIP...

[Nicolas FOURNIL]

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!