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#191142 - 12/19/09 06:08 AM what is "two line over line" telephone wiring?  
bigpapa  Offline
Member
Joined: Mar 2006
Posts: 77
canada
What does this term mean when referring to telephone cabling?

Last edited by bigpapa; 12/19/09 06:10 AM.

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#191159 - 12/19/09 09:18 PM Re: what is "two line over line" telephone wiring? [Re: bigpapa]  
EV607797  Offline
Member
Joined: Oct 2006
Posts: 745
Fredericksburg, VA, USA
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."

#191256 - 12/23/09 06:31 AM Re: what is "two line over line" telephone wiring? [Re: EV607797]  
mhulbert  Offline
Member
Joined: Oct 2004
Posts: 132
Anaheim, CA USA
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!


#194386 - 05/28/10 08:46 PM Re: what is "two line over line" telephone wiring? [Re: mhulbert]  
Tiger1vic  Offline
New Member
Joined: May 2010
Posts: 6
Canada
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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