GSM with TFO+TrFO
OoBTC in BICC, This feature requires support for GSM in the layered architecture and applies to ATM and IP based packet switched core networks and provides End-to-end free transcoding for GSM to GSM calls and coded speech on Core Network
This is what Ericsson has Suggested, as a TFO/TRFo.
But I have heard this issue can not be implemented in 2G.
What do you think?