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1

Mitel MiVoice Business/MCD/3300 / MiVoice Border Gateway(MBG) doesn't allow SAC registrations from Private IP

« on: October 10, 2017, 10:10:05 AM »

Hi Guys ,

I have recently observer that my MBG doesn't allow MiNet/SAC registration from a teleworker device with private IP ( 10.X.X.X or 192.168.X.X) or we can say from a device which is not behind NAT .

MBG version is 9.3

Do you guys have any IDEA?

2

MiVoice Office 250/Mitel 5000 / Re: Mitel 5212/5224 phone's Voice quality issues

« on: October 10, 2017, 10:02:37 AM »

Thanks Folks for your suggestion although the issue has been fixed . The issue was the bandwidth saturation at customer site and has nothing to do with phone Model.

However , the answer to my question is below -

Why did I get packet loss on Mitel  52XX series from Cisco router and didn't get any packet loss from window's /linux  towards same device ?

We ran a continuous ping test from a Cisco Router (core) to a 5224 and 5340; the results were 91% success for the 5224 and 97% success for the 5340. The Cisco router sends the pings much faster and is probably overflowing phone buffers as the pattern of response/drop is consistent on both phone types. Keep in mind the MN5224 is an old phone model and wouldn't have the same chipset/processor power that a 5340 has.Pings run from the MBG and a computer are much slower so the phones respond to all the packets.

Ping test sent from the router is not pertinent to voice quality testing, perhaps we should look at ways to score MOS.

Vikram

3

MiVoice Office 250/Mitel 5000 / Mitel 5212/5224 phone's Voice quality issues

« on: September 29, 2017, 02:16:24 PM »

Hi All ,

 I am facing voice quality / call drop issues on Mitel 5224 .I could see huge packet loss;8-10% on Mitel 5224 models from cisco router while when i replaced it with Mitel 5312 I found that there was no packet loss.

Interesting thing is when i ping the same Mitel 5224 phone from different places I get different results :

From VoIP server - 0% packet loss
From PC in same net work - 0% packet loss .

From Cisco router - 10% packet loss .

Can you advise why is this happening ?

Vikram
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