Figur eb-4 – Verilink AS56/56Plus (896-502588-001) Product Manual User Manual
Page 130
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Special Serial Port Cabling
B-6
AS56
and
AS56
Plus
User Manual
Figure B-4
RS-422A Serial Port #1 Cabling for Internal/External TIming
Access System 56
RS-422A Serial Port
Pin Assignments
Customer RS-422A DCE
Pin Assignments
RS-530
(DB-25)
Signal
Signal
RS-530
(DB-25)
RS-449
(DB-37)
15
TXC-A
TXC-A
15
5
17
RXC-A
RXC-A
17
8
24
Ext. TXC-A
Ext. TXC-A
24
17
2
TXD-A
TXD-A
2
4
3
RXD-A
RXD-A
3
6
12
TXC-B
TXC-B
12
23
9
RXC-B
RXC-B
9
26
11
Ext. TXC-B
Ext. TXC-B
11
35
14
TXD-B
TXD-B
14
22
16
RXD-B
RXD-B
16
24
4
RTS-A
RTS-A
4
7
8
DCD-A
DCD-A
8
13
5
CTS-A
CTS-A
5
9
20
DTR-A
DTR-A
20
12
6
DSR-A
DSR-A
6
11
19
RTS-B
RTS-B
19
25
10
DCD-B
DCD-B
10
31
13
CTS-B
CTS-B
13
27
23
DTR-B
DTR-B
23
30
22
DSR-B
DSR-B
22
29
7
GROUN
GROUND
7
19
DTE
Internal
Function
DTE
Internal
Function
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