Cables and Connectors
LPM cable specifications
Stinger® MS+ Getting Started Guide
B-7
LPM four-wire cable specifications
A LIM that supports 24 four-wire connections, such as a T1 or E1 module, must use a
48-port LPM. Optionally, a 24-port LPM can be used for any LIM supporting 12 or
fewer four-wire ports. Table B-6 shows the USOC RJ-21X cable pinouts for the lower
50-pin connector for four-wire connection. Table B-7 shows the cable pinouts for the
upper 50-pin connector.
24
72R
Brown/violet
49
72T
Violet/brown
25
Not used
N/A
50
Not used
N/A
Table B-5.
Middle connector pin assignments for two-wire connections
(72-port LIM only) (Continued)
Pin
Signal
Color code
Pin
Signal
Color code
Table B-6.
Lower connector pin assignments for four-wire connections
Four-wire
interface
Transmit
tip
Transmit
ring
Receive
tip
Receive
ring
1
Pin 26
Pin 1
Pin 27
Pin 2
2
Pin 28
Pin 3
Pin 29
Pin 4
3
Pin 30
Pin 5
Pin 31
Pin 6
4
Pin 32
Pin 7
Pin 33
Pin 8
5
Pin 34
Pin 9
Pin 35
Pin 10
6
Pin 36
Pin 11
Pin 37
Pin 12
7
Pin 38
Pin 13
Pin 39
Pin 14
8
Pin 40
Pin 15
Pin 41
Pin 16
9
Pin 42
Pin 17
Pin 43
Pin 18
10
Pin 44
Pin 19
Pin 45
Pin 20
11
Pin 46
Pin 21
Pin 47
Pin 22
12
Pin 48
Pin 23
Pin 49
Pin 24