Verilink AS56/56Plus (896-502588-001) Product Manual - Manual (Page 126)

Special Serial Port Cabling
B-2 AS56 and AS56 Plus User Manual
Cables for External Timing
The figures in this section describe the crossover cabling necessary to
support a V.35 and an RS-422A Serial Port #1 with External timing. Note
that the cables are not symmetrical.
The Access System 56 units have female connectors and, therefore, the
cable connectors are always male at the Access System 56 end. They will
also be male at the customer end unless specified otherwise.
V.35 Serial Port
Cabling 458-501776- 0 1 5 V.35 cross-over cable. M-series, 34-pin male
connectors at both ends. Fifteen feet long. Optional at extra cost.
Figure B-1 V.35 Serial Port #1 Cabling for External Timing
Access System 56
V.35 Serial Port
Pin Assignments
Customer V.35 DCE
Pin Assignments
M-Series,
34-pin
Signal Signal
M-Series,
34-pin
Y TXC-A TXC-A Y
V RXC-A RXC-A V
U Ext. TXC-A Ext. TXC-A U
P TXD-A TXD-A P
AA (a) RXD-A RXD-A R
R TXC-B TXC-B AA (a)
X RXC-B RXC-B X
W Ext. TXC-B Ext. TXC-B W
S TXD-B TXD-B S
T RXD-B RXD-B T
C RTS RTS C
F DCD DCD F
D CTS CTS D
H DTR DTR H
E DSR DSR E
B GROUND GROUND B
x x
x
x
x x
x
x
x x