User Manual
Table Of Contents
ADCP-75-126 • Issue B • April 2002 • Section 2: Description
Page 2-20
©
2002,
ADC
Telecommunications,
Inc.
Figure 2-9. Alarm Network Unit
The
EMS
software
may
also
be
installed
on
a
PC-type
lap-top
computer
(not
provided).
A
lap-
top
version
of
the
EMS
computer
can
be
used
as
a
portable
network
management
tool
for
service
and
maintenance
purposes.
A
laptop
EMS
can
be
connected
temporarily
to
a
system
to
enter
the
initial
configuration
data
or
to
trouble-shoot
problems
and
then
removed
when
the
task
is
completed.
Permanent
control
and
monitoring
functions
would
be
provided
by
the
desk-top
EMS
computer.
6.2 Service Interface Connection
The
service
interface
connection
between
the
EMS
computer
and
the
HU
or
RU
requires
that
the
EMS
computer
be
equipped
with
a
DB-9
connector
that
is
configured
to
provide
an
RS-232
DCE
interface.
A
straight-through
RS-232
interface
cable
(accessory
item)
equipped
with
a
male
DB-9
connector
on
one
end
and
a
PC-compatible
connector
on
the
other
end
is
required
to
link
the
EMS
computer
to
the
HU.
When
multiple
HUs
are
networked
together,
the
EMS
computer
may
be
connected
to
the
service
connector
on
any
one
of
the
networked
HUs.
6.3 NOC Interface Connection
The
NOC
interface
connection
between
the
EMS
computer
and
the
NOC
requires
that
the
EMS
computer
be
equipped
with
a
connector
that
is
configured
to
provide
an
RS-232
ASCII
interface.
The
link
between
the
EMS
computer
and
the
NOC
would
generally
be
supported
by
a
data
network
or
dial-up
modem.
Cables
and
equipment
(not
provided)
to
support
the
RS-232
interface
connection
between
the
EMS
computer
and
the
data
network
or
dial-up
modem
are
required.
CD-ROM WITH EMS
SOFTWARE
OR
PLUS
16803-A