Black Box COMPACT T1 MT850A - Manual (Page 413)

Compact T1 - Release 6.1 9-9
ISDN BRI Card
Connector Pinouts
Connector Pinouts
25-Pair Telco Connectors
Circuit connections are made at the 25-pair telco connectors. A standard 25-pair
telephone cable with RJ-21X wiring and a male D-type connector at the Compact T1
end is required.
Slot/Pair Designation
The following designations apply whether a Dual, Quad or Octal ISDN BRI Card
is placed in Slot 1 through 6. However, a Dual would only use the first 2 of the 8
pair, a Quad the first 4, and an Octal all 8. The following is the breakdown of
designated pairs to each Compact T1 slot.
NOTE: For the location of the 25-Pair Telco Connectors, on the back of
the Adit, see 25-Pair Telco Connectors, on page 3-9
SLOT 25-Pair Telco Connector
#1 #1 - 8 (first 8 pairs) on J1
#2 # 9 - 16 (next 8 pairs) on J1
#3 # 17 - 24 (next 8 pairs) on J1
#4 #1 - 8 (first 8 pairs) on J2
#5 # 9 - 16 (next 8 pairs) on J2
#6 # 17 - 24 (next 8 pairs) on J2