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HSSI
Connector
Signals
HSSI Connector
Signals
Two
types
of cables
are available
for
use
with
the
HIP
the
HSSI
interface
cable
used
to
connect
the
HIP
HSSI
port with
an
external
DSU
and HSSI
network
and
null
modem
cable which
allows
you
to
connect
two
collocated
routers
back
to
back
HSSI
Interface
Cable
The
HSSI
interface
cable
Product
Number CAB-HSI1
connects
the
RIP
port with
an
external
DSU
The
cable
comprises
25
twisted
pairs
and
50-pin
SCSI-Il-type
plug
at
each
end
Although
the
HSSI
cable
is
similar
to
SCSI-TI
cable
it
is
not identical
you
cannot
substitute
SCSI-TI
cable
for
HSSI
interface
cable
See
the following
Caution
Table
A-16
lists
the pin signals for the
connector
Caution
Although
the
HIP
connector
and
the
HSSI
interface
cable
are similar
to
SCSI-TI
format
the
HSSI
cable
specification
is
more
stringent
than
that
for
SCSI-IT
We
cannot
guarantee
proper
operation
if
SCSI-TI
cable
is
used
instead of an
HSSI
interface
cable
Table
A-16
HSSI
Interface
Cable
Signals
Pin
Number
Side
Pin
Number
Side
Signal
Name
Router
End
Direction1
DSU
End
SG
Signal
Ground
26
RT
Receive
Timing
27
CA
DCE
Available
28
RD
Receive
Data
Reserved
29
LC
Loopback
Circuit
30
ST
Send
Timing
31
SO
Signal
Ground
32
TA
DTE
Available
33
TI
Terminal Timing
34
LA
Loopback
Circuit
10
35
SD
Send
Data
11
36
LB
Loopback
Circuit
12
37
SG-Signal
Ground
13
38
Ancillary
to
DCE
1418
3943
SG
Signal
Ground
19
44
Ancillary
from
DCE
2024
4549
SG
Signal
Ground
25
50
Router
is
side
DTE
DSU
is
side
DCE
A-14
Cisco
7513
Hardware
Installation
and
Maintenance
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 ...