- Patton Electronics Modem User Manual

56
B.3 E1 INTERFACE
RJ-48C female connector
B.4 X.21 INTERFACE
D-sub-15 female connector (DTE/DCE orientation)
Pin # Signal
1 Receive (Ring)
2 Receive (Tip)
3 Shield
4 Transmit (Ring)
5 Transmit (Tip)
6 Shield
7 No connection
8 No connection
Pin # Signal
1 Frame Ground
2 T - Transmit Data-A (DTE Source)
3 C - Control-A (DTE Source)
4 R - Receive Data-A (DCE Source)
5 I - Indication-A (DCE Source)
6 S - Signal Element Timing-A (DCE Source)
7 BT - Byte Timing-A (DCE Source)
8 SGND - Signal Ground
9 T/ - Transmit Data-B (DTE Source)
10 C/ - Control-B (DTE Source)
11 R/ - Receive Data-B (DCE Source)
12 I/ Indication-B (DCE Source)
13 S/ Signal Element Timing-B (DCE Source)
14 BT/ - Byte Timing-B (DCE Source)