I'll add to this...I just looked up a 2821 ISR G1 and the latest cut of code is 15.1.4.  CME 8.8 is 15.2.1T.  So there is no CME 8.8 on the 2821 as that IOS is not available on that platform.

jpotamitis1,In UC500/CME you should be able to transfer amongst SCCP endpoints without issue and by default.  The issue comes in with transfering to POTS or Analog ports, and this is by design for security purposes.  To enable the transfer you need t...