Toshiba G1IF1 Instruction Manual page 10

Table 3.1 Electrical Connections
(a) Electrical Connections to the G1IF1-01 and -04 (X.21)
Circuit Signal Signal
Name Type
Transmit Ta V.11/RS422
Tb V.11/RS422
Timing Sa V.11/RS422
Sb V.11/RS422
Receive Ra V.11/RS422
Rb V.11/RS422
Power P
48V dc
Supply
N
Ground/ FG Frame Ground
Common
LG Internal Common
SG Shield Ground
CG Common Ground
(b) Electrical Connections to the G1IF1-02 and -03 (G703)
Circuit Signal Signal
Name Type
Transmit Ta CCITT G703
Tb CCITT G703
Timing Sa CCITT G703
Sb CCITT G703
Receive Ra CCITT G703
Rb CCITT G703
Power P
DC rated voltage
Supply
N
Ground/ FG1 Frame Ground
Common
LG Internal Common
FG2 Shield Ground
CG Common Ground
 9 
Terminal Numbers
TB1 X.21
6 2
7 9
10 6
11 13
8 4
9 11
2 -
3 -
1 -
- -
- 1
12 8
Terminal Numbers
TB1
6
7
10
11
8
9
2
3
1
-
12
-
6 F 2 S 0 7 5 5