DECT R4 RTP errors-"No Media Data Received"

[damascus9]

Hello, I have a service request open with Avaya to address this problem and it's going nowhere very s-l-o-w-l-y. I now have 10 DECT stations deployed in a two-story, 44,000 square foot clinic, and am still getting some RTP errors. I've attached screenshots of 1) AirSync Overview, 2) RTP Event log, and 3)individual "No Media Data Received" error.

The AirSync Overview looks OK, right? All green buttons and only a few errors? I would like to see signal strength between stations to be less than -60 dB but that's the best I can do right now.

My question for Avaya is, and that they haven't been able to answer yet, is very simple: how do these "No Media Data Received" errors affect phone calls? The most persistent complaint from end users is that their phones don't ring but will display "X Missed Calls".

One other thing, the UDP-RTP port range in the DECT stations is 16384-32767 but in the IP Office it is 46750-50750. Avaya said these ranges should match. But is this relevant? The ranges don't overlap at all but 98% of the calls still go through.

If there are any DECT vets out there I'd greatly appreciate if you could chime in!

Thanks.

 

[janni78]

Seems like you only attached a picture of the DECTs UDP ports.
They don't need to match, the same way IP Office and IP Phones RTP ports don't match.

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

 

[damascus9]

Thanks. Trying to upload the other screenshots.

 

[damascus9]

Here is the screen shot with the RTP error. Avaya is having a hard time explaining how these affect DECT calls.

 

[tlpeter]

This could be a configuration error.
Do you have groups with a lot of dect phones in it on collective as type of group?
I think this errors shows up when there are not enough channels for all phones.

BAZINGA!

I'm not insane, my mother had me tested!

 

[damascus9]

Thanks guys. I checked the hunt groups and removed what few DECT phones were members. I heard that DECT phones can't be paged anyway.
Avaya said I should remove the G711.A codec from the IP Office Codec list as it's not used in the U.S. anyway. I am seeing some G711.A RTP errors. Now that I have 10 DECT stations deployed there are much fewer errors. The only errors I saw since adding the last station are all coming from the same two extensions. I check the event log on all 10 stations and I only see errors coming from these two phones.

 

[tlpeter]

Maybe those two phones go out of range sometimes. Check where they are located and ask if they beep sometimes.

BAZINGA!

I'm not insane, my mother had me tested!