Issues with connectivity

[cockrellj]

I'm a VTC tech that has just taken ownership of an existing Tandberg network that has some strange quarks.  From HQ we can dial certain sites by IP address and not by E.164 alias.  Those outstations can dial us by E.164 alias but not by IP address.  It's not limited to one type of unit.  They are all desktop Tandbergs, either 1000s or 1700s.  They all have different firmware and upgrading isn't fiscally viable right now.  It's not limited to geography or time of day.  It's also not limited to a certain zone on our VCS Expressway.  The firewall has all the ports open that are referenced in the Tandberg Security white paper.  Any ideas, including exorcisms, will be entertained.  Thanks!

[Martin Koch]

I would check if the systems are properly registered and how the search rules and call logs look like.

Open ports are often not enough, check that there are no ALG/Layer3 features for sip/h323 are enabled.

[cockrellj]

Thanks for the lead on the ALG.  I've got the network guys checking that out.  As for the search rules and the call logs, what would cause the issues between h323 and e164, or what should I be looking for in there?