[Freeswitch-users] inbound-late-negotiation and attended transfer

I have G722 and PCMU enabled for internal extensions and PCMU only for an external gateway. Inbound-late-negotiation parameter is set so then an incoming call arrives PCMU is used without transcoding. But it goes worse when transfer is involved: call 1: gw <-- PCMU--> FreeSwitch <-- PCMU --> operator call 2: operator <-- G722 --> FreeSwitch <-- G722--> extension transfer (refer): gw <-- PCMU--> FreeSwitch <-- G722--> extension Is it possible to renegotiate a codec during transfer to get rid of transcoding? - Dmitry Bely