Hi, I put a 7960 at a remote site and have it registering with local Callmanager over a VPN. It registers with the CM and I can check the network settings with a browser and settings are correct. The user can place calls from the phone but when a call comes into the phone and the user attempts to answer, the phone reboots. This happens with every call. I have phones in another remote site that are registering with the local CM over a third party VPN (Watchguard to Watchguard) and those work fine. The difference is that this site has its own CM and the VPN is through PIX to PIX. Any thoughts?
For IP phone to work normal signalling is just an TCP packets so if your PIX is opened for this then at leat you will hear your phone ring. When the phone goes offhook it uses UDP and the port range on this will be from 16384 to 32767. I would guess that you would need to open this range on your PIX.
Thanks for the reply Dustin. In my situation though I have no problems with the phones at the remote site over the Watchguard VPN to our Watchguard (we have a PIX and a Watchguard side by side). It's the phone at the site with the PIX VPN to our PIX that has the problem.
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