Hi Joegen,

I am using Sip Trunk as well as Enum capabilities of OpenSBC. I have a
question.

I want that whenever an outbound call is established, it should first
search enum records corresponding to phone number dialed and if found
make a call directly.

But it may happen that the other party also has an OpenSBC installed
and it has put IP of my OpenSBC in List of Blocked IP's, so the other
party will send a 403 Forbidden message.

Now two situation can arise:
1. The call should be disconnected.
2. The call should now be made using Sip Trunk facilities of OpenSBC.

I want to know how can I handle the situation in which if a call is
rejected by other party through Enum then the call should be
established through Sip Trunk.

Do an Enum lookup
UA----->OpenSBC 1
----------------------------> Enum Server

Enum lookup is successful
return a Sip URI

OpenSBC 1 Call directly to other party

-----------------------------> OpenSBC 2

Blocked IP of OpensBC 1

Sends a 403 Forbidden message

Establish a call using Sip
Trunk

------------------------------>

Call is established
successfully

Regards,

Dinesh

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