66 block wiring confusion
Im definitely not a telephony guy...
I need to find four pots lines either at the 66 block in our telco room or at the demarc. Both are 66 blocks or split-50. So we have 4 columns of 25 rows, but for the sake of my sanity lets just focus on the first two rows.
Row 1 = A B C D
Row 2 = A B C D
If I punch down a wire into A1, do I terminate it at B1 or A2? I understand that tip and ring would be A1 and A2, but is it correct to say that A1 and B1 are a pair and are connected on the back side? Im confused...
No bridge clips are being used.
I need to find four pots lines either at the 66 block in our telco room or at the demarc. Both are 66 blocks or split-50. So we have 4 columns of 25 rows, but for the sake of my sanity lets just focus on the first two rows.
Row 1 = A B C D
Row 2 = A B C D
If I punch down a wire into A1, do I terminate it at B1 or A2? I understand that tip and ring would be A1 and A2, but is it correct to say that A1 and B1 are a pair and are connected on the back side? Im confused...
No bridge clips are being used.
Comments
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bellhead
Member Posts: 120
How could I describe it...
Ok..
You have 4 phone lines which are terminated into a 66 punchdown block.
What type of cable is this?
What is the color code on the cable?
White-Blue, White-orange etc.
or is it 2 pair
Red-Green,Yellow-black..
The way a 66 block works is the left punch down
Across the punch down block there are four punchdown slots
A,B,C,D.
A1 = B1 C1 = D1
A2 = B2 C2 = D2
A3 = B3 C3 = D3
and so on..
If you use a bridge clip then A1 = B1 = C1 =D1.. this is what they do.
If you are trying to trace phone jacks do you have a toner and wand? -
phoeneous
Member Posts: 2,333 ■■■■■■■□□□
The way a 66 block works is the left punch down
Across the punch down block there are four punchdown slots
A,B,C,D.
A1 = B1 C1 = D1
A2 = B2 C2 = D2
A3 = B3 C3 = D3
and so on..
If you use a bridge clip then A1 = B1 = C1 =D1.. this is what they do.
Are all 66 blocks like that? -
bellhead
Member Posts: 120
No there are others which have six going across. These are in the following configurations.
a1,2,3,4,5,6
b1,2,3,4,5,6
c1,2,3,4,5,6
d1,2,3,4,5,6
e1,2,3,4,5,6
f1,2,3,4,5,6
1 is where you would put the dial tone in and the other 2-6 are feeders coming off of these. We would use these in residential settings were the sub had a ton of jacks. It was easier to just punch his jacks down than to strip them down and wire it. You would just punch the wire feeding dial tone to one and attach the other end to the sni usually.
Hope this helps. -
pitviper
Member Posts: 1,376 ■■■■■■■□□□
Without bridge clips I typically punch the internal wiring over the pre-wired telco side @ A1 or B1.CCNP:Collaboration, CCNP:R&S, CCNA:S, CCNA:V, CCNA, CCENT -
pitviper
Member Posts: 1,376 ■■■■■■■□□□
Here is a pic of the 66-block in my lab (not using bridge clips) = Telco would typically wire to the left side, but in this case I'm using a pre-wired 25-pair (Amphenol) on the right side to an IAD which makes up the analog side of my PSTN simulator.
CCNP:Collaboration, CCNP:R&S, CCNA:S, CCNA:V, CCNA, CCENT
