
System Cables
Verilink Access System 2000: The Basics B-7
Figure B-5 X.21 Adapter Cable (DCE)
P1
MALE
PIN 1
FEMALE
8
15
1
9
J1
13
14
26
DCE
DRAINDRAIN
BLU/WHT
WHT/BLU
GRN/WHT
WHT/GRN
YEL/WHT
WHT/YEL
ORN/WHT
WHT/ORN
PNK/WHT
WHT/PNK
BRN/WHT
WHT/BRN
TAN/WHT
WHT/TAN
CGND
RXD(B)
RXD(A)
TXD(A)
1
2
9
11
4
5
12
6
13
7
14
17
TXD(B)
CGND
25
12
23
10
21
8
4
15
2
26
J1
P1
3
10
6
19
C(A)
C(B)
TAN/YEL
YEL/TAN
1
8
GND
GA
GND
13
ORN/TA
TAN/ORN
N/C N/C
I(A)
I(B)
RXC(A)
RXC(B)
XTC(A)
XTC(B)
(A) R+
(A) S+
(B) XC-
(A) XC+
(B) S-
(B) I-
(A) I+
(B) R-
(A) C+
(B) C-
(A) T+
(B) T-
N/C
N/C
N/C N/C
N/C
N/C
RSCD
14
Part Number: 458-502047-001 (4 ft.)
(N/C Indicates no connection
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