Also known as 2 B-channel Transfer or TBCT (should help your searching). On Tue, Mar 7, 2017 at 5:54 PM, Anthony Holloway < avholloway+cisco-v...@gmail.com> wrote:
> I'm not sure how often this gets configured out in the wild, but I do know > that there are few different flavors of this feature, depending on your > scenario. E.g., CUBE Media Anti-Tromboning > <http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/media-path.html#concept_674530029296875008039300537109374> > > The one I'm interested in would involve a tie line to a legacy PBX, and > I'm not married to the IP technology: SIP, H323, MGCP, whichever will get > the job done. > > CUCM ---IP---> VGW ---T1/PRI---> PBX > > The call scenario I'd like to see if we can avoid is when a call is > established from CUCM to the other PBX, and then a phone on the far side > transfers the call to an IP Phone on the CUCM side, I'd like the PRI usage > to drop to 0 trunks in use, instead of nailing up 2 trunks for the duration > of that call. > > I'm looking for your experience and feedback in configuring > anti-tromboning in this scenario. One of the hardest parts in researching > this, is knowing what terms to search for. I think I've narrowed down the > terminology to QSIG Path Replacement, as described in the CUCM SRND > <http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/accm-851-cm/a08procl.html#wp1156114> > . > > Though, without real-world working experience, it's hard to know if I'm > right or not. > > So, I know there's some good legacy telco knowledge out on this list. > What do you know? Thanks! > > _______________________________________________ > cisco-voip mailing list > cisco-voip@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-voip > >
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