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
