Zhone 7995 ユーザーガイド
C. Connectors, Cables, and Pin Assignments
7990-A2-GB20-20
September 2004
C-7
EIA-530-A-to-X.21 Interface
The EIA-530-A-to-X.21 adapter cable (
Figure C-4, EIA-530-A-to-X.21 (Cable
Feature Number 7900-F1-504)
) provides the X.21 interface shown in
Table C-5,
X.21 Cable Interface
.
Figure C-4.
EIA-530-A-to-X.21 (Cable Feature Number 7900-F1-504)
98-15883
2
14
3
16
17
9
4
19
8
10
7
24
11
2
9
4
11
6
13
3
10
5
12
8
7
14
TD-A
TD-B
RD-A
RD-B
RXC-A
RXC-B
RTS-A
RTS-B
RLSD-A
RLSD-B
SIG. COMMON
TT-A
TT-B
TD-A
TD-B
RD-A
RD-B
RXC-A
RXC-B
RTS-A
RTS-B
RLSD-A
RLSD-B
SIG. COMMON
TT-A
TT-B
530
SIGNAL
DB25
PLUG
PLUG
DB15
SOCKET
X.21
SIGNAL
SIGNAL
495-14787