Installing and Operating BayStack AN and ANH Routers
D-10
114113-B Rev. 00
X.21 Compliance
X.21 compliance requires cable Order No. 7224. Refer to Figure D-3 and
Table D-11 for cabling information.
Figure D-3. Cable Order No. 7224 (X.21 Compliant)
Table D-11. X.21 Interface (Cable Order No. 7224)
Bay Networks Termination Remote Termination
Pin Signal Pin Signal
2Send Data+ 2TD A
16 Send Data- 9 TD B
4 Request to Send+ 3 Control A
18 Request to Send- 10 Control B
3 Receive Data+ 4 RD A
17 Receive Data- 11 RD B
9 Data Carrier Detect+ 5 Indication A
23 Data Carrier Detect- 12 Indication B
10 Send Timing+ 6 Timing A
24 Send Timing- 13 Timing B
7 Signal Ground 8 Signal Ground
1 Frame Ground 1 Frame Ground
(continued)
Pin 1
Pin 16
Pin 31
Pin 15
Pin 30
Pin 44
15 ft
(4.57 m)
15-position D-sub plug with M-3 jack screws
(ground shield connected to backshell)
44-position D-sub plug with screw locks
(ground shield connected to backshell)
CAB0104A
Pin 8
Pin 15
Pin 9
Pin 1
