[VoiceOps] media bypass question

Matthew Crocker matthew at corp.crocker.com
Mon Apr 18 09:48:15 EDT 2016

If the customer truly has an SBC I don’t see why you couldn’t put the Carrier information in the SDP going out to the customer.  Same thing going back,  Customer SDP on 200 OK back to the carrier.   Most customers in Hosted PBX don’t have an SBC however, they have a dumb firewall.   In the case of a dumb firewall (or worse a broken SIP ALG) you are risking one way audio problems if the Carrier SBC doesn’t handle RTP latching.


Matthew Crocker
President - Crocker Communications, Inc.
Managing Partner - Crocker Telecommunications, LLC
E: matthew at corp.crocker.com
E: matthew at crocker.com

> On Apr 18, 2016, at 9:39 AM, Kumudu Suriyaarachchi <kumudu.voip at gmail.com> wrote:
> Hello,
> Is there a mechanism to achieve  media bypass from the customer premise SBC to peering/carrier SBC  where in a typical NAT traversal hosted PBX deployment?
> I am talking about multi-vendor SBCs on the access and the peering sides.
> Thanks,
> Kumudu
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