Cisco AGS+, Hardware Installation And Maintenance

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CPU
Console
Port Wiring
Scheme
CPU Consoe
Port
Wirng Scheme
By
default the console
ports
on
the
processor
cards
are wired for
data
communications
equipment
DCE
Both
DSR
and
DCD
are
active
when
your system is
running The
RTS
signal
tracks
the
state
of the
CTS
input
The
console
port does
not support
hardware
flow control
The
console
port uses
female
DB-25
connector Table
A-i
lists
the
DCE
wiring
scheme
for
the console
port
Table A-i
CPU
Console
Port
RS-232
DCE
Wiring
Scheme
Pin
Signal Description
GND
Ground
TxD in
Transmit Data
RxD out
Receive Data
RTS
Ready
To Send
CTS
..__J
Clear
To Send
DSR out
Data
Set
Ready
GND
Ground
DCD
out
Data
Carrier Detect
CPU
Auxilüary Port
Wrng
Scheme
An
auxiliary port
is
optionally
supported for all
prOcessors
This
is
data terminal equipment
DTE
port
on
the
processor
card
CSCI3 and
CSC/4
to
which
an
RS-232
port
from
channel
service
unit/digital
service
unit
CSUIDSU
or protocol analyzer can be attached
for
access
from
the
network
The
auxiliaiy port shares the ribbon cable
between
the processor card and the console
port
The
console-port
end
of the cable
is split
so
it
has two DB-25
connectors
at
the connector-panel
end
one
for
the console
port
and one
for
the auxiliary port The
processor-card
end
of the cable has
one
50-pin
ribbon
connector
which
connects
to
the console
cable port
on
the
processor
card The
auxiliary port
uses
male DB-25
connector Table
A-2
lists
the
signals
used on
this
port
Table
A-2
CPU
Auxiliary
Port
RS-232 DTE Wiring Scheme
Pin
Signal
Description
TxD out
Transmit Data
RxD in
Receive Data
Signal
Ground
20
DTR out
Data Terminal Ready
24 TxClk
out
Transmit Clock
Both
DTR
and
RTS
are active
when
your system is
running
Modem
control
signals
are ignored
The
auxiliary
port does
not support hardware flow control
A-2
AGS
Hardware
Installation
and Maintenance