atcomsystems.ca/forum Forums TDM Business Telephone Systems Nortel Telephones & Systems Closed Due To Inactivity

I get a lot of "closed due to inactivity" error messages when connected to a BCM400 over a vpn connection. I'll get the message soon after I connect. I can get to Telephony - Sets - Active Sets ok, but Telephony - Target Lines seems to drop me immediately. This has happened from two different remote sites and two different pc's.

Thanks for any ideas.
Jim

I only had one thought that popped in when I read this.
Have you tried to download the Element Manager from THAT BCM instead of using what was on your PC already ?

If you find a fix - let us know.

You said it happens when connected to the BCM "over a VPN connection" -- have you tried connecting to the BCM from the same computer (laptop, hopefully?) using the same version of Element Manager while connected on-site directly to the same network as the BCM? Does that work, and it's only when using the VPN that you have problems?

This honestly sounds more like an issue with the VPN to me than anything else, perhaps related to packet size/MTU. What kind of VPN is it? Can you try pinging the BCM over the VPN with large-ish-sized packets (1472 on Windows) without setting the DF-bit and see what happens? You might also crack open Wireshark and watch the conversation...I believe communications between Element Manager and the BCM are encrypted, so you won't be able to glean much from the contents of the conversation itself, but you might notice other things happening at L3 (e.g., TCP RST) that might provide some clues.

-- Nathan