Physical
Description
Two
versions
of the
E1-G.703/G.704
interface
are
available
one
supports balanced
mode
and
the
other
supports
unbalanced
mode
Neither
the
modes
nor the cables
are interchangeable
you
cannot
configure
balanced
port
to
support
an
unbalanced
line nor can
you
attach an
interface
cable
intended
for
balanced
port
to
an
unbalanced
port
The
FSIP El-G.703/G.704
interface
supports
both
framed and unframed
modes
of operation
loopback
test
and
four-bit
CRC
The
interface
can
operate
with
either
line-recovered
or an
internal
clock
signal
The
FSIP
is
configured
at
the factory
with
from one
to
four
E1-G.703/G.704
port
adapters
Each
port
adapter
provides
two
15-pin
D-shell
DB-15
receptacles
which
support
only
El-G.703/G.704
interfaces
The FSIPE1-G.703/G.704
interface
uses
DB-15
receptacle
for
both
the balanced
and
unbalanced
ports
The
label
adjacent
to
the port indicates
whether
the port
is
balanced
or
unbalanced
you must
connect
the correct
type
of interface
cable
or the port
will
not
operate
The FSIP end
of
all
El -G.703/G.704
adapter
cables
is
DB-
15
connector
At
the
network
end
the
adapter
cable
for
unbalanced
connections
uses
BNC
connector
The
adapter
cables
for
balanced
mode
are
available
with
several connector
types
to
accommodate
connection
standards
in
different
countries
You
must
use
the proprietary
cables
to
connect
the
El-G.703/G.704
port
to
your
network
Cables
for balanced
and unbalanced
mode
are
available
with
the following
types
of network-end
connectors
Balanced
120-ohm
twinax
split
at
the
network
end
with
separate
transmit
and
receive
cables
each
with
BNC
connector
Balanced
120-ohm
cable
with
DB-15
connector
at
the
network
end
Unbalanced
75-ohm
coax
with
BNC
connectors
at
the
network
end used
primarily
for
connection
in the United
Kingdom
In addition
some
connections
require
bare-wire
connections
directly
to
terminal
posts
Table
1-3
lists
the
model numbers
and
descriptions
of the
E1-G.703/G.704
port
adapters
and
cables
Table
1-3
Model
Numbers
and
Descriptions
of
E1-G.703/G.704
Port
Adapter and
Cables
Port
Adapter and
Cable
Model
Numbers
Description
PA-7KF-El/1201
Dual-port El-G.7031G.704
120
ohm
balanced
PA-7KF-E1/75
Dual-port El-G.703/G.704
75
ohm
unbalanced
CAB-El--TWINAX
El
cable
twinax
120
ohm
balanced
CAB-El-DB15
El
cable
DB-15
120
ohm
balanced
CAB-El-BNC
El
cable
BNC
75
ohm
unbalanced
The
appended
equal
sign
indicates
spare
part
Product
Overview
1-27
Summary of Contents for 7513 Series
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Page 11: ...Cisco 7513 Hardware Installation and Maintenance ...
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Page 266: ...Interface Processor LEDs B 16 Cisco 7513 Hardware Installation and Maintenance ...
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