Ringer voltage on an analog port

[bill4comm]

Looking for information on the idle voltage and ringer voltage on an IPO 500 analog port. We have a large retail environment and some of the analog phones at the far end are not ringing.

 

[tlpeter]

I think it is around 38 volts.


BAZINGA!

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

 

[Bas1234]

• Off Hook current: 25mA.
• Ring Voltage: 40V (nominal) RMS.

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[bill4comm]

The problem was very weird. Some of the analog ports are sending enough juice to ring the old type bells in wall 2500 sets. Others are not. Whe we tested the ring voltage at the far end (about 350') in some cases, the voltage was about 40. And it also rang the electronic ringer in the techs butt set. But not the bell in the phone. Wondering if the distance could be a factor on 24 gauge wire. Perhaps we should be installing wall phones with electronic ringers in them?

 

[BoskerTheArkite]

Well I may be way off, but I was thinking talk voltage is -48v dc and ring voltage is -48v ac. because way back in the day, all they had was -48v dc and to get the phones to ring they would reverse polarity every few milliseconds to make the arm on the ringer pull the hammer form one bell to the other.

 

[bill4comm]

Interesting. If just seems to me that the switch might not be designed to ring an old type bell with a coil that is sitting about 350' away. Very flakey when some ports will work the distance and others won't.

 

[crumthwacket]

It's the amps not the volts causing you're problem - replace the old 2500 sets with electronic sets and your problem will disappear.

Peace out.

 

[bill4comm]

That is what I expected. Those old coils just are not getting the juice they need through that tiny 24 gauge hose! Thanks guys.

 

[BoskerTheArkite]

Bell used 24 ga up to 3 miles from the CO before going to 22 ga and farther out 19 ga. In residential areas one could not have 3 phones and expect them to ring, because of the resistance in those ringers. I would say crumthwacket is right,amps is the trouble.