Offnet to Offnet Call Transfer Failure

[abraham23482]

Hi All

Could someone please help me with an offnet transfer issue that is affecting office wide. 

Call flow

PSTN call to SIP CUBE -> Call Manager -> Cisco Phone -> transfer to PSTN number -> Cisco Phone user presses transfer button when the other phone starts ringing -> message on cisco phone that 'Cannot complete transfer'

I am attaching the voice ccapi logs and ccsip messages from cube and also ccm trace files. 

Please advise.

First Call Leg

cisco-ani=9199981034
cisco-anitype=0
cisco-aniplan=0
cisco-anipi=0
cisco-anisi=1
dest=9634847448471

Second Call Leg

398531960: Sep 27 10:15:28.105 EST: //17833993/C6E7AF00001B/CCAPI/cc_api_display_ie_subfields:
ccCallSetupRequest:
cisco-username=9199981034
----- ccCallInfo IE subfields -----
cisco-ani=9199981034
cisco-anitype=0
cisco-aniplan=0
cisco-anipi=0
cisco-anisi=1
dest=4847448471

[abraham23482]

Attaching debug from Cube as well

[davefrank]

I ended up having to enable "Media Termination Point Required" checkbox on every phone that needs to be able to forward to extensions with call forward all to their cell phones to get this to work.