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HSSI
Connector
Signals
Null
Modem
Cable
The
null
modem
cable
CAB
-HNUL
can
connect
two
routers
directly
back
to
back
The
two
routers
must be
in
the
same
location
and
can
be two
Cisco
7513
chassis
two
Cisco
7000
series
chassis
or
one
of
each
null
modem
connection
allows
you
to
verify the operation
of the
HSSI
or
to
link
the
routers
directly
in order
to
build
larger
node
The
null
modem
cable
uses
the
same
50-pin
connectors
as
the
HSSI
interface
cable
but uses
the
pinouts
listed
in
Table
A-17
For
null
modem
cable
connection
and
configuration
instructions
refer
to
the section
HSSI
Connection
Equipment
in
the chapter
Preparing
for Installation
Table
A-17
HSSI
Null
Modem
Cable
Signals
Signal
Name
From
Pins
Direction
To
Pins
Signal
Name
Receive
Timing
27
34
Terminal Timing
DCE
Available
328
833
DTE
Available
Received
Date
29
11
36
Send
Data
LoopbackC
530
1035
LoopbackA
SendTiming
631
631
SendTiming
DTE
Available
833
328
DCE
Available
Terminal Timing
34
27
Receive
Timing
LoopbackA
1035
530
LoopbackC
Send
Data
11
36
29
Receive
Data
Ground
26
26
Ground
32
32
13 38
13 38
1944
1944
2550
2550
Loopback
not
connected
12
37
12
37
Loopback
not
connected
Not used
1418
1418
Not
used
2024
2024
3943
4549
3943
45-49
Cabling
Specifications
A-15
Summary of Contents for 7513 Series
Page 1: ......
Page 11: ...Cisco 7513 Hardware Installation and Maintenance ...
Page 121: ...Site Log 2 56 Cisco 7513 Hardware Installation and Maintenance ...
Page 162: ...Troubleshooting the Processor Subsystem 4 10 Cisco 7513 Hardware Installation and Maintenance ...
Page 266: ...Interface Processor LEDs B 16 Cisco 7513 Hardware Installation and Maintenance ...
Page 270: ...C 4 Cisco 7513 Hardware Installation and Maintenance ...
Page 288: ...18 Cisco 7513 Hardware Installation and Maintenance ...