回複:這條線都是關於DTMF的問題。。。

回答: 這條線都是關於DTMF的問題。。。slow_quick2012-03-30 13:35:22

great, change the DTMF method fixed the issue... thanks a lot!!

1.  Change the DTMF transmit method to in-band.
Service Providers > ITSP Profile X > General > DTMFMethod = InBand

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