[VoiceOps] Mitel 3300 Issues

[Matthew Beckwell]

The HT8XX series ATA FXS Ports should have an option for “Enable High Ring Power” you could try enabling.

~Matthew


> On Mar 14, 2022, at 3:50 PM, Mike Hammett <voiceops at ics-il.net> wrote:
> 
> A customer of mine has a Mitel 3300 PBX. We deliver to them analog lines.
> 
> 
> Everything worked fine for months, if not years. Then one day they say they can't receive inbound calls. They can still place outbound calls.
> 
> They're on a Grandstream HT818 ATA. I move some lines to the Zhone ONT that's on-site. No improvement.
> 
> I plug in a normal analog handset from Walmart or Menards. They all ring and answer just fine.
> 
> I plugged in a patch cable from their Mitel ONS2 to the analog trunk 5 and they set up an extension on that ONS2 so that a call to it would trigger an inbound call on their analog line. Apparently that worked.
> 
> The Mitel support agent is saying that we're not sending them between 24v - 48v.
> 
> All cables are 6' at most.
> 
> A) I don't see anywhere to configure voltage on either platform.
> B) I don't know how it could work and then just stop, other than equipment failure.
> C) I don't know how it would work just fine on a COTS phone, but not their Mitel.
> D) I don't know how the same problem could also afflict another ATA (build into the ONT).
> 
> 
> Any tips?
> 
> 
> 
> 
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com <http://www.ics-il.com/>
> 
> 
> 
> Midwest Internet Exchange
> http://www.midwest-ix.com <http://www.midwest-ix.com/>
> 
> 
> 
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