Re: [OpenSER-Users] Multidomain and in-dialog REFER auth issue

Iñaki Baz Castillo wrote:

> The gateway will be in fact other OpenSer+CDRtool+MediaProxy (if I can > configure it) or Asterisk. They will contact with the real SIP carrier. > > So when user_B@domain_B calls sip:12345@domain_B it will appear in > OpenSer gateway: > - From=user_B@domain_B > - RURI=12345@domain_B > > But in the aboved explained forwarding it will appear > - From=user_A@domain_A > - RURI=12345@domain_B > > I'm not sure then how to invoice this call. I see 2 options: > > a) Invoice always based on RURI [*] > > b) Add a "Diversion" (or other custom) header in main OpenSer so OpenSer > gateway will invoice to the user in that header.

I would use b). Add a header to the INVITE sent to GW-Openser (name it as you like, e.g: X-Billing-Party: ) and in GW-Openser use this header for accounting. Further: - make sure to remove every X-Billing-Party header from messages routed by the main proxy - do not accept INVITEs without this header in the GW-Openser. This way you can be sure that nobody bypasses your accounting logic.