Two sites, two IP Phones = No sound

[nemmens]

I'll try and explain his properly.

Main site - mine - with 406 with IP Office 3.2 and 50 digital phones and 1 IP Phone
Other site - London - one IP Phone
Another site - up north - 7 IP Phones

Sites connected via MPLS network. I can call up north from my IP phone, no problems.

I installed an IP Phone in London, it connected to IP Office and lets me logon and make external calls and lets me make calls to other non IP phones at the main site.

However, I cannot call the IP phone at the main site from London. The call connects, but silence when answered.

All extensions setup the same so I don't understand why this doesn't work. Please help me troubleshoot as I'm struggling to find out why this isn;t working.

 

[amriddle01]

Untick allow direct media path on the IP links in the IP Offices and retry. If it works it is your routing at fault

ACS - IP Office Implement

 

[nemmens]

I can't try un-ticking that option at the moment as it tells me I need to reboot to save the changes so this will have to wait til out of hours.

Can you give a bit more detail about the routing please as this might make sense. It's the only thing that could be different but I'm not sure how it is setup and the guy that would have set it up has since left.

Is there documentation on how it should be configured I can check.

N.

 

[amriddle01]

Basicaly you have a working connection between the two IP offices say 192.168.42.1 and 192.168.43.1 but the IP Phones have their own address say 192.168.42.5 and 192.168.43.5. When you have allow direct media path enabled once the call is setup it drops the link through the IP Office and tries to send the data directly between the two IP phones, if you have not allowed these addresses to talk on your networks routing it causes what you describe a connection but no audio. It's a network change that's needed not something in the IP offices.

ACS - IP Office Implement

 

[nemmens]

That makes sense and sounds likely to be cause. I'm going to get someone to take a look at this.

Thanks for taking the time to respond.