I don't know if this will offer any insight.
We are using CommPartners and Broadvox both CLEC and ITSP's (SIP Trunk
provider)..
They use two (2) ip addr's one for orgination and one for termination
They expect the From to be in this form
[EMAIL PROTECTED] only (IPaddr of the sipXbridge/sipX box)
and will not accept [EMAIL PROTECTED] or any other contrivance.
They will not provide any details to anyone (for security reason) how they
handle sip packetts after it hits their ITSP gateway, period. So don't expect
Nortel to help you with AT&T or anyother SIP Trunk provider.
r
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