Broadworks itself does not act on the media (especially the DTMF) in any way under normal circumstances. The DTMF negotiation will usually occur directly between the end phone (Polycom here) and the Level 3 media gateway that transitions the call to the PSTN. I'd recommend you take a capture on your furthest point out towards Level 3 (outside of BroadWorks) and also have the conference provider take a capture on their end as the call comes in. Then you go to Level 3 with the proof that something bad is happening within their network or after they pass off to the PSTN, and they can either fix the issue or change the routing. -Scott From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Dawson, Robert Sent: Tuesday, March 16, 2010 2:34 PM To: Carlos Alcantar; VoiceOps Subject: Re: [VoiceOps] Broadworks/Polycom/Webex Conferences and DTMF issues Broadworks From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Carlos Alcantar Sent: Tuesday, March 16, 2010 1:14 PM To: VoiceOps Subject: Re: [VoiceOps] Broadworks/Polycom/Webex Conferences and DTMF issues What type of pbx are these polycom's connected to? Carlos Alcantar Race Telecommunications, Inc. 101 Haskins Way South San Francisco, CA 94080 P: 650.649.3550 x143 F: 650.649.3551 E: carlos at race.com From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Robin Rodriguez Sent: Tuesday, March 16, 2010 10:06 AM To: VoiceOps Subject: Re: [VoiceOps] Broadworks/Polycom/Webex Conferences and DTMF issues On Mar 16, 2010, at 10:49 AM, Dawson, Robert wrote: G.711/RFC2833/L3 Have you engaged L3 yet on this issue? If not get them on the phone, armed with your own captures showing appropriate RFC2833 event duration and if you yell loud enough they'll setup the instrumentation on their network to trap it. My guess, L3 isn't terming the call themselves and at some point the converting RFC2833 to inband to hand off to the eventual term carrier, and that carrier is accepting the call via a Sonus which is mucking it up. and yes been there done that. -- Robin D. Rodriguez Ifbyphone, Inc.