Specifications

Appendix A Connection Data Installation and Operation Manual
A-12 Data Channel Connection Data FCD-E1LC Ver. 1.0
Table A-9. Wiring of X.21 Adapter Cable for DCE Mode
FCD-E1LC Side Designation Function User’s Side
1 FG Frame Ground 1
2 SDA Send Data (wire A) 2
3 RDA Receive Data (wire A) 4
4 RTSA RTS (wire A) 3
5 CTSA CTS (wire A) –
6 DSRA DSR (wire A) –
7 SG Signal Ground 8
8 DCDA DCD (wire A) 5
9 RCB Receive Clock (wire B) –
10 DCDB DCD (wire B) 12
11 SCEB External Send Clock (wire B) –
12 SCB Send Clock (wire B) 13
13 CTSB CTS (wire B) –
14 SDB Send Data (wire B) 9
15 SCA Send Clock (wire A) 6
16 RDB Receive Data (wire B) 11
17 RCA Receive Clock (wire A) –
18 – Not connected –
19 RTSB RTS (wire B) 10
20 RCEA External Receive Clock (wire A) –
21 – Not connected –
22 DSRB DSR (wire B) –
23 RCEB External Receive Clock (wire B) –
24 SCEA External Send Clock (wire A) –
25 – Not connected –
Connection Data for Data Channel with V.36/RS-449 Interface
The following sections provide information on the cables required to connect
user’s equipment to a data channel with V.36/RS-449 interface in the various
timing modes.