When a call is transferred to another extension using a blind transfer, asterisk keeps traces of who is transferring in the BLINDTRANSFER variable. If instead the call is “forwarded” using most phone call forward feature, a
302 Moved Temporarily is sent back to asterisk

— Called SIP/104-DEVEL
— Got SIP response 302 “Moved Temporarily” back from
83.211.***.***:5063
— Now forwarding SIP/103-DEVEL-00000000 to
‘Local/0039*****@authenticated’ (thanks to SIP/104-DEVEL-00000001)

Unfortunately I don’t find in any of the variables available in the Local channel used by asterisk to place the new call, the originating extension.

In the logs asterisk says “Thanks to SIP/104-DEVEL…” but in which variable can I find this value?

Leandro