There's the external IP, which I didn't set since it's dynamic, a signalling port, which I set to 5060 and an RTP prt range, which I didn't set. That didn't seem to have any effect.We're using Asterisk CVS 3-19-04 with four polycom IP600s. The work very well and we're quite happy with them. They register fine and all four are able to place and receive calls, BUT two of them are behind NAT routers and when they place a call on hold, the call is dropped within 5 seconds. I couldn't find any relevant items in the archive search using terms like SIP, NAT and HOLD. The server has a public static IP, two phones have public static IPs and the two with the hold problem have dynamic NAT'ed IPs. Not sure what other info might be helpful.
I'm no Polycom expert, but there's a <nat> section in your Polycom XML config files that you might tinker with. There's a brief section about it in the Polycom manual. And that's the limit of my knowledge....
Carey
These two phone show up with ports other than 5060 in SIP SHOW PEERS. I wonder if that has anything to do with it.
-rb
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