Avaya 71/81/62 analog phone to be used on a non PBX , CO line?

Avaya 71/81/62 analog phone to be used on a non PBX , CO line?
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Avaya 71/81/62 analog phone to be used on a non PBX , CO line? steven.brickles 03-08-2005
Posted by on March 8, 2005, 2:26 pm
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I know that the 7100, 8100 and 6200 analog phones cannot be used on a
non PBX, since it has a message waiting lamp since it may short circut.
Is there a way to turn off the circut or unplug the wire, so I could
use that phone for a non PBX system without worrying about knocking out
a phone line? Thank you in advance - Steven



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Posted by Dmitri(Cabling-Design.com on March 10, 2005, 3:34 am
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steven.brickles@gmail.com wrote:




> I know that the 7100, 8100 and 6200 analog phones cannot be used on a
> non PBX, since it has a message waiting lamp since it may short circut.
> Is there a way to turn off the circut or unplug the wire, so I could
> use that phone for a non PBX system without worrying about knocking out
> a phone line? Thank you in advance - Steven


Message waiting lamp to short the line? Where did you get that information
from?


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Posted by Justin Time on March 10, 2005, 10:00 am
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Well, if it uses "Stacked" DC (~96Vdc) to light the lamp and the neon
lamp shorts...

I guess you could take the phone apart and cut the lead to the lamp.



Posted by electricboyo on March 13, 2005, 2:43 pm
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Justin Time wrote:
> Well, if it uses "Stacked" DC (~96Vdc) to light the lamp and the neon
> lamp shorts...
>
> I guess you could take the phone apart and cut the lead to the lamp.

I don't know about the AT&T/Lucent 7100 series, but the 8100 and 6200
series should certainly work OK on a POTS line without any
modifications. They both use an LED circuit for the message-waiting
lamp rather than a traditional neon lamp. Because of this, they don't
load down the line like a neon lamp.

Actually, even phones with neon message lamps will often work OK on a
POTS line. The only problem with phones having neon message lamps is
that if a telephone company tech tests the "leakage" of the line with a
Tempo Sidekick, they may get a "shorted line" reading. This is because
the Tempo puts out a high enough DC voltage in its leakage test mode to
"fire" the neon lamp.



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other useful resources:
The Federal Communications Commission (FCC)
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International Telecommunication Union

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