Hi all,

I have an SPA-2102 connected to a Nortel phone system. I have an issue where I'm hearing duplicate (and sometimes triplicate) DTMF tones on both ends. That is, duplicate from a Nortel phone or from the caller.

Both incoming and outgoing calls are going through Unlimitel. I've specified dtmfmode to use rfc2833 on the trunk.

Between the SPA-2102 and Asterisk, I've tried switching dtmfmode between rfc2833 (avt), info, and inband with no luck. Also, we're using firmware 3.3.6 on the SPA-2102.

Any thoughts on what may be causing this?

Thanks,
Sean.

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