SWAN 2 Concentrator Installation and Support Guide

Cable Specifications
SWAN 2 Concentrator Installation and Support Guide—429593-010
C-20
Loopback Test Connector Wiring
Loopback Test Connector Wiring
The loopback test connector, whose wiring is shown in Table C-11, is not a cable. It is a
connector with wiring inside the connector housing, and it provides a loopback function
for testing purposes.
Table C-11. Loopback Test Connector Wiring
Loopback
Test
Connector RS-232 RS-449 X.21 V.35
From To From To From To From To From To
49TXDRXD
5 10 SD_A RD_A T_A R_A
6 11 SD_B RD_B T_B R_B
7 10 TXD_A RXD_A
8 11 TXD_B RXD_B
13 16 RTS CTS RTS CTS
13 47 RTS SDCD
14 19 RS_A CS_A C_A B_A
15 20 RS_B CS_B C_B B_B
24 21 DTR DSR DTR DSR
27 DCD DCD
45 RING RING
25 22 TR_A DM_A TR_A I_A
28 RR_A
46 IC
26 29 TR_B RR_B
23 DM_B TR_B I_B
30 37 TXCO TXC
41 RXC
31 38 TT_A ST_A TT_A S_A
42 RT_A
32 39 TT_B ST_B TT_B S_B
43 RT_B
35 38 ETXC_A TXC_A
42 RXC_A
36 39 ETXC_B TXC_B
43 RXC_B