I'm familiar with the concept of take-back and transfer however I am having a hard time identiftying if it is a feature of Cisco routers/unified communications manager (call manager).
Using the following devices:
3745 x 3
2851 x 1
Cisco CallManager 4.0 (w/ updates)
I would assume the feature would need to be supported at our gateway routers (3745's and 2851) as the CallManager would not receive the DTMF signaling necessary to start take-back and transfer, sometimes referred to as TNT.
Can anyone provide more information regarding this feature and Cisco?
To my knowledge, this is only supported on the PGW 2200.
http://www.ciscosystems.com.pe/en/US/docs/voice_ip_comm/pgw/9/feature/module/9.7_3_/FMbdtbtx.html
http://www.cisco.com/en/US/docs/voice_ip_comm/pgw/9/feature/module/9.7_3_/Dmite2.html
Hope this helps.
Brandon