Enterasys csx200 Guía Del Usuario
WPIM Cable Specifications
220
CSX200 Family User’s Guide
X.21
shows the connector number, cable assembly description, and connector type.
provides pin assignments for the X.21 interface cable.
Table 36 X.21 Interface
Connector Number
Cable Assembly Description
Connector Type
1
EIA-530A ALT A to X.21
Sub DB 26-pin male
2
DB-15 pin male
Table 37 X.21 Interface Cable Pin Assignment
Connector 1 EIA-530A ALT A
PAIR
Connector 2 X.21
MNEMONIC
DIRECT
TO
NAME
PIN
PIN
NAME
DIRECT
TO
MNEMONIC
BA
DCE
Transmit Data A
2
A
2
Transmit A
DCE
T
Transmit Data B
14
9
Transmit B
BB
DTE
Receive Data A
3
B
4
Receive A
DTE
R
Receive Data B
16
11
Receive B
CB
DTE
Clear to Send A
5
C
5
Indication A
DTE
I
Clear to Send B
13
12
Indication B
CA
DCE
Request to Send A
4
D
3
Control A
DCE
C
Request to Send B
19
10
Control B
DB
DTE
Transmit Signal Timing A
Receive Signal Timing A
17
15
15
E
6
Signal Element
Timing A
DTE
S
Transmit Signal Timing B
Receive Signal Timing B
9
12
13
Signal Element
Timing B
SHIELD
1
DRAIN
AC
DTE Common
7
8
Signal Ground
G
AB
DCE Common
23