El Monday 15 October 2007 17:26:29 Juha Heinanen escribió:
Iñaki Baz Castillo writes:
- Now user_A@domain_A sends a REFER with "Refer-to:
004598623435@domain_B". - user_B@domain_B phone is automatically referred to an internacional PSTN number via our OpenSer with no knowledge of user_B.
- The international call is answered and tarified to domain_B account.
I do see a problem.
there is a problem, but the problem is with B's sip phone if it acts on refer without confirmation from the user.
I know no deskphone asking the user for permission for a REFER. I think REFER is intented to use with a B2BUA in the middle (as Asterisk for example) so external user calls with your B2BUA and B2BUA with local user. An external user is not allowed by B2BUA to send a REFER, just local users.
But of course it's simply possible a real and direct SIP communication between an external and internal user.
how is that problem less, if A and B are in the same domain?
When I say "domain" I mean "company". I understand that is allowed.
Regards.