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Card to extend distance for digital phones

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Wire12

Technical User
Mar 23, 2011
43
US
How is it possible to extend the distance for a digital phone to operate. Right now I believe the NT8D02GA card's distance is 3000ft. I have an office that is hoping to relocate but the distance is 9500 ft. Switch is a CS1000M CP IV Release 4.5.

 
If you have data at that location a VoIP phone would be a good solution.
 
No we don't have VoIP phone just the regular 2616 and 2008 phones.

Are you saying that if we buy VoIP phones then that would work.

 
GHTROUT.....thanks will check it out.....


 
I have used MCK Extenders in the past, they work very well. You could also do a Remote Office with a Reach Line Card and either 9115's or a 9150.
 
Reach Line Cards and the 9150, using IP for the site-to-site would be your easiest. They are pretty reasonably priced and basically emulate a DLC. The only thing that you will need to consider is the number of simultaneous calls and have the desired number of DSPs on both sides.
 
I've found this below

ANALOGUE EXTN LINE LIMITS / DIGITAL LOOP RESISTANCE.

For 500 set:
REN 1/2...........MAX LOOP RESISTANCE......1000 OHMS
REN 3.............MAX LOOP RESISTANCE...... 900 OHMS
REN 4..............MAX LOOP RESISTANCE...... 600 OHMS
REN 5..............MAX LOOP REISTANCE......... 350 OHMS

For 500 set:
ASSUMING YOU ARE USING 0.5MM COPPER CABLE THE
FOLLOWING IS A GUIDE TO THE MAXIMUM LENGTH OF
CABLE TO BE USED:-

REN 1/2..............11.4 KILOMETRES

REN 3.................10.25 KILOMETRES

REN 4.................6.8 KILOMETRES

REN 5.................4 KILOMETRES

PLEASE NOTE :: THESE FIGURES ARE FOR THE LINE LOOP
SO FOR EXAMPLE,AN EXTN WITH A REN OF 5 SHOULD NOT
BE FITTED MORE THAN 2 KILOMETRES FROM THE EQUIPT.

R = p.l/a

where R = resistance
p = resistivity ( copper is 17.2 x 10 to the power -9 )
l = length in metres
a = cross sectional area of the conducter ( metre sq )

For Aries type set:
Digital set loop resistance must be below 175 ohms. (approx 3000 ft)


All the best

Firebird Scrambler
Meridian 1 / Succession and BCM / Norstar Programmer in the UK

If it's working, then leave it alone!.
 
The problem these days is guaranteeing point-to-point metallic lines over that distance over provider facilities.
 
Thanks to all for your info.....will check out everything and get back you as to what we choose.....once again thanks.

 
Sorry for not getting back earlier.....anyway pass info to management and I recommend to get the RLC with the RO 9150. Does anyone know what the price is for these items, new and where can I order them from. Found a few on web but never got any reply from companies concerning price.

Thanks for all your info.....

 
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