APPENDIX
C-4 X.21 Interface
Table C-4 : X.21 Cable pin definition
DB25
Male
Signal
X.21
Female
1 Shield
Ground 1
2 Signal
Ground 2
4 TXD(a) 3
3 CTRL(a) 4
8 RXD(a) 5
17 Indication 6
24 RXC(a) 7
7 Signal
Ground 8
14 TXD(b) 9
19 CTRL(b) 10
16 RXD(b) 11
10 Indication 12
9 RXC(b) 13
11 EXC(b) 14
G G
Figure C-6 : DB-25M Interface
Figure C-7 : DB-37F Interface
C-5 DB-9 Interface
Table C-5 : DB9 Connector pin definition
DB9
Female
Signal
Source
2 TXD
DCE
3 RXD
DTE
5 Signal
Ground
7 CTS
DTE
8 RTS
DCE
64
Summary of Contents for Xstream 1300 Series
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