DBM or BKP Port/Interface
Function
Transmit/Receive ring to/from the local loop
Transmit/Receive tip to/from the local loop
RJ48H Connector for T1 Mass Termination Cable
Function
Circuit Line # Pin #
Receive ring
R1
from the
network
Receive tip
T1
from the
network
Function
1
1
Transmit ring
to the network
2
2
3
3
4
4
5
5
6
6
7
7
1
26
Transmit tip to
the network
2
27
3
28
4
29
5
30
6
31
7
32
*9121–A2–GN10–10*
20
Circuit
R
T
Circuit Line # Pin #
R
T
Pin #
4
5
1
14
2
15
3
16
4
17
5
18
6
19
7
20
1
39
2
40
3
41
4
42
5
43
6
44
7
45