Cisco 7513 Hardware Installation And Maintenance Manual page 111

Preparing Network Connections
Connections
X.21
The X.21
United
DTE
EIA/TIA-232
The
network
the
at
DCE
or
Figure
jDCE
EIA-530 Connections
EIA-530
distance of
standard
existing
EIAITIA-449
and EIAITIA-423
used
is
primarily
The EIA-530
adapter
standard
connector
Specifications
Figure
M3
Thumbscrew
Metric
pair of metric
connect
thumbscrews
Connecting
instructions
7513 Hardware
2-46 Cisco
interface
uses
15-pin
Kingdom
connect
to
public
DCE
and and
interfaces
as
end X.21
router FSIP of
all
end
of the adapter cable
network end X.2l
of the
adapter
DB-15 For
receptacle
Adapter Cable Connectors
2-39 X.21
fII1IIIIIj
which
balanced
supports
EIAITIA-449
the smaller
on
created
was
to
support
EIAJTIA-232
DB-25
Like
EIAJTIA-449
Although the specification
Mbps
at
successfully
in the United States
cable available
adapter is
cable
is
high-density
DB-25
commonly
plug
network end
the of the adapter
at
EIA-530 Adapter Cable Connector
2-40
Replacements
thumbscrews
is
cables remote
serial to
network end
the
at
Devices
Metric-Based
to
and Maintenance
Installation
connection balanced
for
networks X.21
data relocates
fewer
circuits
result requires
cables
is
adapter high-density
DB-15
standard
connector
is
X.21
cable cables
are available
cable
the appendix
refer to
pinouts
Network
transmission
provides
DB-25
connector
the
more
sophisticated
circuitry
hardware
instead of the larger 37-pin
EIA-530
the
refers to electrical
recommends
and even
at faster
speeds over
DTE
mode
only The
in
plug The
network
60-pin opposite
used EIAITIA-232
for connections
For
cable cable
Network
DTE
included with each
port adapter
devices use metric hardware
that
M3
of those cables with
the
in the chapter
Installing
and used
commonly
circuits is
some of the logic functions
and
smaller
connector
plug The
60-pin opposite
shows
2-39 the connectors
Figure
DTE
as either
Cabling
Specifications
End
the increased
functionality
The EIA-530
used for
EIA/TIA-232
EIAITIA-449 on
of the
used
connectors
EIAJTIA-422
of
specifications
maximum
Mbps
of
speed
EIA-530
short distances
end
FSIP
router of the
end
of the adapter
shows
2-40
Figure
the appendix
refer
to
pinouts
End DTE Only
in
Available
cable V.35
If
except
the standard
replace
thumbscrews
Refer the section
to
Router
the for replacement
in the
the
to
than
DB-15
plug
and
speed
masses
of
for
EIA-530
used
is
EIA-530
cable
is
DB-25
the
Cabling
will
you
4-40