RTP requires two one way UDP streams.
phone ---------> asterisk phone <--------- asterisk
The RTP stream can be routed from the * box to the phone, but not the other way (unless you did what you stated below). So essentially you have a one-way conversation.
Hrm. XLite, upon request, modifies the setup information to reflect an external IP for firewalled clients. I wonder if we could have * do the same. I'm assuming it would violate the RFC, but if one could set the IP embedded in the SDP packet to the firewall's external address via a configuration variable, wouldn't this solve the problem?
I am guessing you want to have a phone somewhere else on the Internet so this solution does not meet your requirements.
Agreed - unless everyone's on the same subnet.
I don't know the answer to that one. I am new the *, and have already started down the path that you are going and wanted to help so you don't have to repeat all troubles I had.
Much obliged.
It sounds like you more than one real IP address to work with, if that is the case there may be a way to make it work in your setup. Let me know.
I'll keep you posted. Right now, I'm leaning towards putting * outside the firewall. A less desirable option is to dual-home * since that defeats the security profile. I can't move * to the firewall as Stephen suggested since my firewall is FBSD. Besides, this is only for pre-PRI testing purposes.
Brad
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