Thanks guys. Nick, that's kind of the conclusion I was leaning towards, and now I have confirmation bias. ;) I'll take a look at that flex reach doc as soon as I can. Also, Brian, I do have an Annunciator in the MRGL of the SIP trunk. Thanks again.
On Mon, Apr 25, 2016 at 2:04 PM, Nick Barnett <nicksbarn...@gmail.com> wrote: > My experience is that it isn't going to give ringback to PSTN phone A > (step 7) when going back through a CUBE without forcing MTP. > > This was called out as a caveat in the SIP integration guide for AT&T flex > reach via CUBE. > > https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/interoperability-portal/flexible-reach.pdf > > > > On Mon, Apr 25, 2016 at 1:59 PM, Anthony Holloway < > avholloway+cisco-v...@gmail.com> wrote: > >> All, >> >> Does anyone have any experience with CUCM, SIP Phones, SIP Trunks, and >> early attended transfers (AKA hitting the transfer button a second time >> quickly)? I'm not hearing ringback on the transferee phone. >> >> Components in play: >> >> CUCM 10.5(2) >> CUBE 15.4 (SIP-SIP) >> >> Scenario: >> >> 1. PSTN Phone A calls into enterprise >> 2. IP Phone B answers >> 3. IP Phone B Presses Transfer Key >> 4. PSTN Phone A hears MOH >> 5. IP Phone B Dials Transfer Target and hears ringback >> 6. IP Phone B Presses Transfer Key Again >> 7. PSTN Phone A hears silence until call connects then two way audio >> >> I found this reference in the CUCM System Guide on SIP: >> >> >> http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/sip_msg/line_std/11_0_1/CUCM_BK_SB03D18E_00_sip-line-messaging-standard-1101/CUCM_BK_SB03D18E_00_sip-line-messaging-standard-1101_chapter_00.html#CUCM_CN_E798E831_00 >> >> Specifically these two seemingly contradictory sentences: >> >> "The transferee receives a ringback while the target phone is alerting." >> >> "The transferee will not receive a ringback although the target is >> alerting." >> >> Seems like it's just not going to work. What do you think? >> >> _______________________________________________ >> cisco-voip mailing list >> cisco-voip@puck.nether.net >> https://puck.nether.net/mailman/listinfo/cisco-voip >> >> >
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