Cables for internal/external timing, Figur eb-3 – Verilink AS56/56Plus (896-502588-001) Product Manual User Manual
Page 129
Cables for INTernal/EXTernal Timing
AS56 and AS56
Plus
User Manual
B-5
Cables for INTernal/EXTernal Timing
Please refer to items #16 and #24 on AS56 and AS56
Internal/External timing is supported with standard straight-through
cabling. In addition, the attached DTE must internally loop back its
incoming Transmit Clock to its outgoing External Transmit Clock. If this
cannot be done inside the DTE itself, the same function can be provided
with cable jumpers (at the DTE connector). Contact factory if assistance
is needed.
Figure B-3
V.35 Serial Port #1 Cabling for Internal/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
DC
DC
F
D
CTS
CTS
D
H
DTR
DTR
H
E
DSR
DSR
E
B
GROUND
GROUND
B
DTE
Internal
Function
DTE
Internal
Function