The
Sonus IBCF shall either transparently pass or delete the P-Visited-Network-ID header in REGISTER, INVITE, OOD non-INVITE message from ingress call-leg to egress call-leg, as configured.
The CLI syntax to provision the P-Visited-Network-ID string is shown below:
% set addressContext default zone <ZONE_NAME> sipTrunkGroup <TG_NAME> signaling P-HeaderExtensions insertpVisitedNetworkID <character-string>
Refer to SIP Trunk Group - Signaling - CLI for details.