BCM50 and remote IP phone troubleshooting

[ncluett]

Hello,
I need some help getting remote phones talking to each other.

Some background.... we have a BCM50 v3 in the main office. The main office is connected to two branch offices via static vpns with SonicWALL hardware. In the branch offices I have several 2050 soft phones and new 1230 ip desk phones. The users in both branch offices phone's register back on the system in the main office.

Users in the remote offices can 3-digit dial and talk to users back at the main office no problem and the audio quality is great, but they can't call inbetween remote offices. Users can see the call come through on their phone and it will ring, but when they pickup the call no voice either way.

All offices have internal NAT and all other network traffic is working great. The BCM can make the connection, but something is blocking the voice part of the call. Our firewalls aren't blocking traffic on the static VPNs, so I'm at a loss...

Thanks for the help.

 

[SupportDude]

When two IP sets call each other, it becomes a peer to peer call. The BCM is no longer involved, its just one IP set to another, across the network.
It could be the NAT that's screwing you up.

-SD-

http://www.mysupportguy.net

 

[ncluett]

So then the call would only rely on the static vpn in between the two remote offices?

I currently don't have a VPN configured between the remote offices, but that's easy to do.... Thanks for the advice.

 

[SupportDude]

That's what your missing.
Glad to help!

-SD-

http://www.mysupportguy.net

 

[Skyfall]

Dude is absolutely right! We had same issue when we first time setup VPN tunnel for 2 remote offices IP sets. Have to set up the tunnel between each branches.

Always learn from someone, something and somewhere......

MC

http://www.tomkin.ca

 

[lemonman69]

I have also experienced this problem, although I was unable to setup a VPN between each site due to hardware limitations and the fact that 6 sites were involved.

The solution I came up with was to have the device terminating the VPNs (A router in this case) route traffic from one VPN end point to the other. Found this the most scalable solution as only required the 6 VPNs.

 

[Skyfall]

lemonman69's solution need routing knowledge, not every guy can properly set up. But I do want to know how you set it up if you don't mind.

Always learn from someone, something and somewhere......

MC

http://www.tomkin.ca

 

[tnphoneman]

You don't need a static VPN between remote offices. They are both VPN'd into the main office right? All you need to be able to do is route between the subnets. That would be done locally in the main office. This is just like having a large customer with multiple subnets.

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[Skyfall]

That still needs a router or layer 3 switch in order to do the subnet routing.

Always learn from someone, something and somewhere......

MC

http://www.tomkin.ca