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DTMF Relay between CallManager and H323 IPIPGw

When configuring a H323 trunk between CallManager and a H323 gateway, we can use h245-alphanumeric DTMF relay option. Besides h245-alphanumeric, any other DTMF relay methods appliable? Dose CallManager support rtp-nte in H323 trunk?

Thanks

Henry

1 REPLY
Green

Re: DTMF Relay between CallManager and H323 IPIPGw

All dual tone multifrequency (DTMF) signaling on an H.323 trunk is provided out-of-band using H.245.

SIP Trunks support NTE.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_chapter09186a008063742e.html#wp1052730

The NTE option on Cisco Unified CallManager 5.X for H.323 at this time.

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