One IP phone user cannot hear some callers 2

[Chris Cunningham]

I recently deployed 10 ip phones (9608) to my ip 500v2 system. I have one user with a strange issue.
He can call all extensions, and the recipient can hear him, but he can't hear the recipient.
This seems to be isolated to one user, I have already tried replacing the phone with a new one out of the box.
From another extension on a different IP phone, I am able to make a two way call connection. Thoughts?

 

[fieldtechonIR]

Direct media path is different than the others ?

 

[Chris Cunningham]

It was the direct media path setting, got it to work. Thanks!

 

[mic501]

It is always this the trick. When you are receiving voice from different networks and different codecs, it is always good practice to disable direct media path and let IPO get in between to do all the translation necessary.

 

[Chris Cunningham]

So it should be safe to disable on all IP phones? Is there a reason I would want this enabled?

 

[janni78]

Good practice is to have a network that's routed correctly for Direct Media to works, disabling it is just a way hiding the issue.

"Trying is the first step to failure..." - Homer

 

[gwebster]

janni78 is correct. Having the IP Office in the middle doing the transcoding adds delay which ultimately affects voice quality. Your data network should be configured so that packets do NOT need to be routed through the IPO.

 

[fieldtechonIR]

Direct media path is a useful tool with regard to overcoming IT staff shortcomings. Wouldn't leave home without it.