I am having a problem with my PIX firewall. I can use an IP service on the outside of the firewall with no problem. When I connect my device behind my firewall I get incoming calls just fine. Outbound calls will ring the other side and I get a 100 proceeding message. When the other party picks up, there is no audio in either direction. My internal phone still shows 100 proceeding message.
I am using a Cisco PIX with the latest version of IOS. I get the same results regardless of the service I am using (ie:level3, Sip Center, FWD, Windows Messenger) so I know it is not a problem with any service. If you could offer any help or suggestions, I would really appreciate it.
There's a number of H323/SIP bugs even in latest PIX code. For any voice-through-a-pix problem I'll always suggest you open a TAC case and get them to provide you with the latest interim release of 6.2(2) code, currently I think it's up to 6.2(2.135).
I'm always hesitant to blindly suggest code upgrades, EXCEPT where voice and a PIX is concerned, I have seen too many problems resolved in later interim images to even bother trouble-shooting it with 6.2(2) code (any developer will also tell you to upgrade to the latest before they look at the problem).
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Threat protection built into ISR and ISRv branch routers and CSR
Complements ISR Integrated Security
Lightweight IPS solution with low TCO (Total Cost of Ownership) and automated signature updates
Supports VRF (16.6)
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...