[VoiceOps] SONUS and RFC2833

Howard Hart hch at sipster.com
Fri Aug 7 10:32:52 EDT 2009

Anyone out there know the magic incantation on SONUS boxes to make 
RFC2833 DTMF signaling work consistently? We've got one vendor using 
SONUS with this turned on that works flawlessly. For the rest we've had 
to fall back to in-band DTMF. Far as I can tell, they're all GSX;es.

Thanks in advance,
Howard Hart

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