Cant' call VoIP sets but can call digital sets and outside lines

[Knackster]

Here's the scene:

BCM 400 w/ 4.0

I have 4 remote sites, all with 2 i2002 phones each site. Each site is on a different subnet. Our admin building has 20+ i2004 phones. Our plant has a mix of i2002 and digital sets. Every site is on a seperate subnet with the BCM in the middle: think hub and spoke config.

So at one of my remote sites neither of the 2 i2002 phones can transmit audio to any other VoIP pohone in the network, but they will transmit audio to digital sets and outside lines. If the 2 remote phones call each other, they can hear each other.

Nothing has changed on the network routing wise.

I have replaced both phones, pushed new configs out, deregistered and reregistered the phones, even rebooted the bcm, no luck.

Anyone have any ideas?
Thanks

Chris
IT Manager
Houston, Texas

 

[gwebster]

If the remote IP Phone 2002 calls another IP Phone and it rings but no speechpath when answered, then you have an IP routing problem between those two locations. During the call setup and ringing, the signaling packets flow between the IP Phone 2002 and the BCM. Once the phone answers, the voice packets flow directly between the two IP Phones. From one of the IP Phone 2002, try pinging the IP address of the destination IP Phone.

 

[TWISTEDAPP]

In addition to the VPN tunnels to head office from each of the branch sites, you have to establish tunnels from branch office to branch office, then it will work.

 

[Knackster]

They are all on a private network, no vpn tunnels are in use.
I will try pinging across from one handset ip to another.

Thanks for a good idea.

Chris
IT Manager
Houston, Texas