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one way audio from just one phone

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alex053

Technical User
Aug 24, 2009
96
US
We recently installed a 3300 MXE III into a cluster of existing 3300's. they are all on 4.1 SP2

There is currently a problem with one user having one way audio between the new site and an existing site. I havent verifiyed if its all sites yet though.

There are 12 phones at the new california site.

when one user tries to 4 digit dial the az switch, we get one way audio. The CA caller can not hear the AZ caller.

they are connected via MPLS and its only for voice. the voice and data networks are completely seperate.

I considered it may be a switch on the port so the user moved the phone a known good location and we had the same issue.

I have dealt with one way audio and it normally a network issue but it will be site wide and usually a firewall issue. i havent had it be a single phone having the problem.

and of course its the typical situation...im in a different state so i cant redily go wireshark it and its the COO of the damn company's phone.

any ideas?
 
I would bet that the gateway of the phone is set incorrectly.

**********************************************
What's most important is that you realise ... There is no spoon.
 
They all get the same gateway. Dhcp is from the 3300
 
You have someone step through what the progarmming is in the phone? Even though you use DHCP someone might have inadvertantly put some static settings in the phone. Do I take it the California phones all home to a 3300 in Arizonia? If you call to another phone on site in CA do you still get one way audioor is it only when dealing with someone in AZ?

I'd tell you a UDP joke but I'm afraid you won't get it. TCP jokes are the best because you always get them.
 
there is a controller in CA that the phone is connected to and there is a dedicated MPLS network for all the other controllers. there are 4 in AZ, one other in CA. i have a call and email to the customer to test extension to extension on the same node.
 
Good have them test a local call. As you say one way audio is usually the network. That could still be the case. Do you know if the phone is on the same subnet as all the other working phones at the remote site?

I'd tell you a UDP joke but I'm afraid you won't get it. TCP jokes are the best because you always get them.
 
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