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what is "two line over line" telephone wiring? #191142 12/19/09 05:08 AM
Joined: Mar 2006
Posts: 81
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bigpapa Offline OP
Member
What does this term mean when referring to telephone cabling?

Last edited by bigpapa; 12/19/09 05:10 AM.
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Re: what is "two line over line" telephone wiring? [Re: bigpapa] #191159 12/19/09 08:18 PM
Joined: Oct 2006
Posts: 745
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EV607797 Offline
Member
Never heard of it and I'm in the phone business. Sounds like maybe someone trying to describe ISDN-BRI or DSL. Either way, it just uses standard twisted pair wiring, CAT3 is more than sufficient for these services.


---Ed---

"But the guy at Home Depot said it would work."
Re: what is "two line over line" telephone wiring? [Re: EV607797] #191256 12/23/09 05:31 AM
Joined: Oct 2004
Posts: 132
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mhulbert Offline
Member
Sounds like a "pair gain" term.
Read some stuff about it here: http://en.wikipedia.org/wiki/Pair_gain
They don't mention a "DAML" which I've run across. I'd guess it's a Digital multiplexor. Basically you get one pair from the CO, and it gives you 2 POTS lines. Careful, the pair from the CO has 100+ VDC on it!

Re: what is "two line over line" telephone wiring? [Re: mhulbert] #194386 05/28/10 07:46 PM
Joined: May 2010
Posts: 6
Tiger1vic Offline
New Member
An "overline" is telco terminology for an additional phone number on the same line - as in when a business has 2 lines but only one receptionist. Both numbers ring on the same phone.


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