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MTA not sending inband DTMF

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madmax
MTA not sending inband DTMF

Hi,

I am trying to configure cable modem environment for some testing purposes. I have following hardware:
Motorola BSR1000 CMTS
Arris Touchstone Telephony Modem TM501A
Incognito Management Console
Docsis 1.1

The problem that I am facing is that MTA is not sending DTMF digits over RTP (inband).

In an IVR system, Media Server collects the DTMF received in RTP stream. But, here it seems that MTA is not sending DTMF over RTP (nothing is received in Media Server, checked Media Server logs). Is there any configuration to enable inband DTMF or RFC2833 compatibility?

TIA...