363-765-104-04
February 19, 1998
Revision
04
FRE-765
List
4x
PairGain
Engineering - Plant Series
9
Backplane Connections
lists the FRE-765 List 4x backplane connectors and where each connector is described in this practice.
Table 3.
Channel Unit Circuit Utilization
Channel Unit Service Configurations
Channel Unit
4-Channel POTS
8-Channel POTS
4-Channel ISDN
4-Channel DDS
T/R 1
Ckt 1
Ckt 1
Ckt 1
Ckt 1 Tx
T/R 2
Ckt 2
Ckt 2
Ckt 2
Ckt 1 Rcv
T/R 3
Ckt 3
Ckt 3
Ckt 3
Ckt 2 Tx
T/R 4
Ckt 4
Ckt 4
Ckt 4
Ckt 2 Rcv
T/R 5
—
Ckt 5
—
Ckt 3 Tx
T/R 6
—
Ckt 6
—
Ckt 3 Rcv
T/R 7
—
Ckt 7
—
Ckt 4 Tx
T/R 8
—
Ckt 8
—
Ckt 4 Rcv
Table 4.
FRE-765 List 4x Backplane Connectors
List
Connector or Fuse
Go to
On
4, 4B, 4G
P1 Connector (12/24 channel systems)
4A
Subscriber terminations (12/24 channel systems)
4D, 4E
Subscriber terminations (12/24 channel systems)
4F
Subscriber terminations (12/24 channel systems)
4H
Subscriber terminations (12/24 channel systems)
All
P3 and P2 Connectors (16/32 channel systems, reference)
and
All
Test and Configuration Line-Unit Terminations
All
HDSL, Metallic Bypass, and Auxiliary Power Line-Unit Terminations
All
Power and Ground Line-Unit Terminations