Zhone 7995 ユーザーガイド
C. Connectors, Cables, and Pin Assignments
C-6
May 2002
7990-A2-GB20-00
EIA-530-A Port
The EIA-530-A Port interface connector information is shown in
Table C-4.
EIA-530-A Port Interface Connector
Signal
Circuit
Mnemonic
Mnemonic
ITU-T
Number
Number
Direction
Pin
Number
Number
Shield
—
—
—
1
Signal Common
AB
102A
—
7
Signal Common
AC
102B
—
23
Transmitted Data
BA
103
To DSU/CSU
2 (A)
14 (B)
Received Data
BB
104
From DSU/CSU
3 (A)
16 (B)
Request to Send
CA
105
To DSU/CSU
4 (A)
19 (B)
Clear to Send
CB
106
From DSU/CSU
5 (A)
13 (B)
Received Line Signal Detector
CF
109
From DSU/CSU
8 (A)
10 (B)
DCE Ready
CC
107
From DSU/CSU
6
DTE Ready
CD
108/1, /2
To DSU/CSU
20
Transmit Signal Element
Timing (DTE Source)
Timing (DTE Source)
DA
113
To DSU/CSU
11 (B)
24 (A)
24 (A)
Transmit Signal Element
Timing (DCE Source)
Timing (DCE Source)
DB
114
From DSU/CSU
12 (B)
15 (A)
15 (A)
Receiver Signal Element
Timing (DCE Source)
Timing (DCE Source)
DD
115
From DSU/CSU
17 (A)
9 (B)
Local Loopback
LL
141
To DSU/CSU
18
Remote Loopback
RL
140
To DSU/CSU
21
Test Mode
TM
142
From DSU/CSU
25