Hi,

I'm a bit confused (as usual) on call flow between FS boxes behind an OpenSIPs balancer.

All servers are on the same LAN, so the phones. Registrations are stored on common DB.

PhoneA sends a register and Opensips balancer forward it to FS1.

PhoneB sends a register and Opensips balancer forward it to FS2.

PhoneA send an INVITE for PhoneB and OpenSIPs forward it to FS1.

FS1 answers "Originate Failed.  Cause: USER_NOT_REGISTERED"

An IRC friend says to use path (RFC 3327). 

Is there a config solution or should I follow the his advice?

Thanks,

Chris B.