2050 to 2050 via VPN connection troubles 2

[TravelerM1]

Hi, we have a number of remote users that use Cisco VPN client to connect to the office network. They have Nortel 2050 softphones and are having trouble when calling each other - no speech path. This is a 2050 VPN user to 2050 VPN user connection. a 2050 VPN to a 2050 non-VPN or any other IP set not on VPN is fine.

Any one seen this before?

Thanks

 

[gwebster]

You need to configure the VPN tunnels to allow voice packets to flow from one 2050 to the other.

 

[atascoman]

Make sure the ports are not blocked on the firewalls.

 

[Jephph]

Has it ever worked tunnel-to-tunnel? Or is the trouble intermittent?

 

[81Cadmin]

Is your network fully meshed with your offices (do all offices have a direct path to one another)? If not this could be your problem. When not fully meshed the call setup between the M1 and the IP phones are established (hub and spoke), however when the sets try to establish a direct media path (for speech) they can't see each other and as a result the speech path fails. To test this simply have the users ping each others IP from those locations.

If the problem is offsite (home user, etc) then it's likely the VPN/Firewall needs to be configured to allow for IP set to IP traffic.

 

[TravelerM1]

Thanks all, our WAN vendor had to turn "hairpinning" on our Cisco VPN concentrator.