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- 66_block abstract "A 66 block is a type of punchdown block used to connect sets of wires in a telephone system. They have been manufactured in three sizes, A, B and M. A and B have six clips in each row while M has only 4. The A blocks spaced the rows further apart, and has been obsolete for many years. The B style is used mainly in distribution panels where several destinations (often 1A2 key telephones) need to connect to the same source. The M blocks are often used to connect a single instrument to such a distribution block. 66 blocks are designed to terminate 22 through 26 AWG solid copper wire. The 66 series connecting block, introduced in the Bell System in 1962, was the first terminating device with insulation displacement connector technology. The term 66 block reflects its Western Electric model number.The 25-pair standard non-split 66 Block contains 50 rows; each row has four (M) or six (B) columns of clips that are electrically bonded. The 25-pair "Split 50" 66 Block is the industry standard for easy termination of voice cabling, and is a standard network termination by telephone companies–generally on commercial properties. Each row contains four (M) or six (B) clips, but the left two (or three) clips are electrically isolated from the right two (or three) clips. Smaller versions also exist with fewer rows for residential use.66 blocks are available pre-assembled with an RJ-21 female connector that accepts a quick connection to a 25-pair cable with a male end. These connections are typically made between the block and the customer premises equipment (CPE).".
- 66_block thumbnail 66_block.JPG?width=300.
- 66_block wikiPageExternalLink open?id=0B8_JQzGGBEq0OWVLdW1URC1yV1E.
- 66_block wikiPageID "1755751".
- 66_block wikiPageRevisionID "600628447".
- 66_block hasPhotoCollection 66_block.
- 66_block subject Category:Local_loop.
- 66_block subject Category:Telephony_equipment.
- 66_block comment "A 66 block is a type of punchdown block used to connect sets of wires in a telephone system. They have been manufactured in three sizes, A, B and M. A and B have six clips in each row while M has only 4. The A blocks spaced the rows further apart, and has been obsolete for many years. The B style is used mainly in distribution panels where several destinations (often 1A2 key telephones) need to connect to the same source.".
- 66_block label "66 block".
- 66_block sameAs m.05tgnk.
- 66_block sameAs Q4642197.
- 66_block sameAs Q4642197.
- 66_block wasDerivedFrom 66_block?oldid=600628447.
- 66_block depiction 66_block.JPG.
- 66_block isPrimaryTopicOf 66_block.
