We have a customer site that is having some issues with their IVR system. The system worked without any issues for a couple of months. We had to change the gateway from H.323 to MGCP because of a caller ID issue. As soon as we made the change to MGCP, the IVR system started periodically receiving duplicate digits when a customer dials in their account number. The IVR system is connected to the IPT network via ATAs. Weve replaced ATAs, but the problem persists. Weve tried several different dtmf-relay commands, still does the same thing. A TAC case was opened and debugs sent to Cisco. TAC says the ATAs arent sending any dialed digits twice.
My question is, why would this break after changing the gateway router from H.323 to MGCP????
Have you hooked up an analog phone to the ATA and actually listened to what DTMF is being sent when someone on PRI presses keys? You should be able to audibly hear if its sending it once or twice when the PRI caller only presses a key once.
I would also investigate if the length of the DTMF tone is different with MGCP vs H323 when sent out of band. It is possible that the IVR system is hearing a LONG dtmf key press and considering it two tones. Can you tweak anything regarding DTMF on the IVR to allow for longer DTMF tones?
I don't know if any of these suggestions are relevent but it is what I would investigate if I had tried all the MGCP dtmf relay commands.
I think what the bug workaround says is to enable G729 codec for the call and due to the compression of g729, the inband DTMF will be unrecognizable. There is no configuration to enable DTMF relay to use G729.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...