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For reasons exactly like this, we will only deploy an Adtran (TA-90x
is what I use) in front of a Mitel system, for either POTS or PRI
Handoff. Everything else has just been nothing but problems
inter-oping to the MITEL. Normally we just walk away from a MITEL
System anymore. The support headaches are not worth the revenue. <br>
<br>
Try throwing an Adtran in front of the MITEL and see if the problems
go away. <br>
<br>
<div class="moz-cite-prefix">On 3/14/2022 3:50 PM, Mike Hammett
wrote:<br>
</div>
<blockquote
cite="mid:152541301.9061.1647291050184.JavaMail.mhammett@Thunderfuck2"
type="cite">
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<div style="font-family: arial,helvetica,sans-serif; font-size:
10pt; color: #000000"><span style="font-size: 13.3333px;
background-color: rgb(255, 255, 255);">A customer of mine has
a Mitel 3300 PBX. We deliver to them analog lines.</span>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">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.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">They're on a Grandstream HT818 ATA. I move some
lines to the Zhone ONT that's on-site. No improvement.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">I plug in a normal analog handset from Walmart or
Menards. They all ring and answer just fine.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">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.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">The Mitel support agent is saying that we're not
sending them between 24v - 48v.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">All cables are 6' at most.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);"><br>
</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">A) I don't see anywhere to configure voltage on
either platform.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">B) I don't know how it could work and then just
stop, other than equipment failure.</div>
<div style="font-size: 13.3333px; background-color: rgb(255,
255, 255);">C) I don't know how it would work just fine on a
COTS phone, but not their Mitel.<br>
D) I don't know how the same problem could also afflict
another ATA (build into the ONT).<br>
<br>
<br>
Any tips?</div>
<div><br>
</div>
<br>
<div><span name="x"></span><br>
<br>
-----<br>
Mike Hammett<br>
Intelligent Computing Solutions<br>
<a class="moz-txt-link-freetext" href="http://www.ics-il.com">http://www.ics-il.com</a><br>
<br>
<br>
<br>
Midwest Internet Exchange<br>
<a class="moz-txt-link-freetext" href="http://www.midwest-ix.com">http://www.midwest-ix.com</a><br>
<br>
<span name="x"></span><br>
</div>
<br>
</div>
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