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System Installation 2-9
System Installation Connector Pin-outs
2.4.3 T1 interface RJ45 connector
Table 2-6 lists the T1 RJ45 connector pinouts.
E&M
Port 2
T1-2 31 FXS
Port 2
T-2 43
E&M
Port 2
R1-2 6 FXS
Port 2
R-2 18
E&M
Port 2
E-2 32 FXS
Port 3
T-3 44
E&M
Port 2
M-2 7 FXS
Port 3
R-3 19
E&M
Port 2
SG-2 33 FXS
Port 4
T-4 45
E&M
Port 2
SB-2 8 FXS
Port 4
R-4 20
E&M
Port 3
T-3 34 ALM
1A
Alarm
contact
46
E&M
Port 3
R-3 9 ATM
1B
Alarm
contact
21
E&M
Port 3
T1-3 35 ALM
2A
Alarm
contact
47
E&M
Port 3
R1-3 10 ALM
2B
Alarm
contact
22
E&M
Port 3
E-3 36 ALM
3A
Alarm
contact
48
E&M
Port 3
M-3 11 ALM
3B
Alarm
contact
23
E&M
Port 3
SG-3 37 ALM
4A
Alarm
contact
49
E&M
Port 3
SB-3 12 ALM
4B
Alarm
contact
24
NC Not Used 50
NC Not Used 25
Table 2-5. 25-pair female amphenol connector
Port Designation Pin Port Designation Pin