这个组合你们测试过可以发dtmf?昨天按照多加日志修改了chan_ss7,打出的日志
[Jul 6 09:36:20] WARNING[20290]: transport.c:347 io_send_dtmf: DTMF generation of 1 failed on CIC=124 res=-1 errno=61: No data available.
[Jul 6 09:36:21] WARNING[20290]: transport.c:347 io_send_dtmf: DTMF generation of 1 failed on CIC=124 res=-1 errno=61: No data available.
[Jul 6 09:36:22] WARNING[20290]: transport.c:347 io_send_dtmf: DTMF generation of 1 failed on CIC=124 res=-1 errno=61: No data available.