Intertel

[hawks]

Hi anyone know the wiring for a phone connected to an Intertel system?

 

[Sphoneman]

I believe it was USOC. The power pair is the center 2 pins. If you short them you'll blow a fuse. Best bet to confirm is to pull out an existing jack & follow it.

Steve
tele-dataservices.com

 

[TouchToneTommy]

Actually, if it is the keysets that use three pairs, the 1st pair need to be reversed, that is Red is Tip and Green is Ring. We usually found it better to wire the jacks as standard USOC 3-pair, and reverse one end of the jumper at the station block out of the KSU.

And you're correct, that if you short the 1st pair, or forget to reverse the polarity, you'll pop the fuse and take out 6 stations at a time. Get a pair of non-conducting needlenose pliers for removing the bridge clips, and you'll be a happier camper.

 

[fonedude]

I worked on an Eclipse the other day and the phone used 1 pair, the orange or yellow/black.

 

[Sphoneman]

Thanks for jogging my memory TouchToneTommy.

Yes, if you do not reverse the power pair it will blow a fuse most definitely.

Intertel was developed by Computer People (I found that out from my instructor when I was certified on their systems back in 1984 & they did not follow any of the telco standards for the voice pair on pins 5&4.

Steve
tele-dataservices.com

 

[hawks]

Thanks for the input

 

[oldward]

Actually no system Intertel ever made is wired normally, something's gotta get reversed. Whether it's a single-pair, two-pair or three-pair system, safest bet is stare and compare.