Hello. I try to make a call through another SIP instalse to freeswitch. 
I added extension and use FS as proxy to rpovider.
I successfully registered on FS as user and try to make a call.

I see at FS cli that invite arrives and FS answers 407, next my instanse Sends ACK and thn INVITE with a digest auth.

I see thins invite at the TCPDUMP on the FS machine but not see it at the FS
Firewall is disabled for tests....