No audio on 4 digit calls between sx200 controllers

[Rick La Grande]

I have a customer that we just installed a SX200 AX Controller at 1 of 3 sites the other 2 sites are using SX200 CXIs. We are using 2 types of IP phones the 5224 and the 5330e. For understanding I will call the AX site A and the 2 CXI will be sites B and C When using the 4 digit dialing between the sites certain 5330e will not send any audio to both sets of phones. The 5224 work fine and some of the 5330e will send to both types of phones.

Site A has 5 5330e
Site B has 2 5330e
Site C has 2 5330e all other phones at the 3 sites are 5224
Only one ext of the 5330e from site A has problem sending audio to site B. The same applies in reverse.
Site C can only receive audio from the same ext that does not work going to site B.
Site B & C do not communicate on purpose.
software at all sites are using 5.0.2.12

[acejavelin]

So one phone is the commonality of the issue? Have you tried blowing away the MACs and swapping the phones and see if the problem follows the extension or the phone itself, could it be as simple as a bad phone?

I don't think this is a networking issue, since the SX200 doesn't do clustering or IP networking... how the systems networked, via PRI?

[Rick La Grande]

We are using the IP nodes to network the systems together via a VPN tunnel. It worked fine until we added the AX controller. I have  blown MAC address and replaced phones. It did not work. Any suggestions would be helpful.

[ralph]

The last time I had a similar issue it was traced to one of the systems having a wrong subnet mask.
I'd do a once around for subnet and gateway.

Ralph

[Rick La Grande]

I think I have Isolated the problem to one site and not for sure how to fix it.  This site has 10 phones with the AX controller 5 phones are 5330E and 5 are the 5224. I am sure the problems is with the networking, but their IT guys does not know how to help. They have Cisco SA 520 VPN router that per specs is not capable of options 128 or 129. they have a Cisco SF 300-24P switch and our Mitel. DHCP is only working on the Mitel but all the phones and pc's running through the phones had to be manually set.

I think somehow in the networking at this site; the phones and network traffic is getting confussed on the route paths causing the audio loss.

Any Ideas all the phones are setup with the same subnet?

[johnp]

I would think that the asa could do 128 and 129, may need to be hex.