User Manual
ADCP-75-150 • Preliminary Issue A • March 2003 • Section 1: Overview
Page 1-5
©
2003,
ADC
Telecommunications,
Inc.
Figure 1-4. Local Service Interface
2.5 Remote NOC Interface
Remote
communications
between
a
Network
Operations
Center
(NOC)
and
a
networked
grouping
of
multiple
Digivance
systems
is
supported
by
a
remote
NOC
interface
capability
as
shown
in
Figure
5.
The
primary
component
of
the
remote
NOC
interface
is
a
PC-type
desktop
computer
loaded
with
the
Digivance
Element
Management
System
(DEMS)
software.
DEMS
provides
the
various
control
and
monitoring
functions
required
for
remote
management
of
multiple
Digivance
systems
through
a
NOC.
A
Controller
Area
Network
(CAN)
port
is
provided
on
each
HU
so
that
up
to
twenty-four
HU’s
can
be
networked
together
in
daisy-chain
fashion
and
controlled
though
the
same
DEMS
computer.
The
DEMS
computer
connects
to
the
networked
HU’s
through
the
computer’s
RS-
232
port
#1.
All
HU’s
can
then
be
controlled
through
the
same
DEMS
computer.
The
NOC
is
connected
to
the
DEMS
computer
through
a
data
network.
The
DEMS
computer’s
RS-232
port
#2
interfaces
with
the
data
network
equipment.
The
network
equipment
must
be
capable
of
interfacing
with
an
RS-232
ASCII
interface
port.
At
the
NOC,
control
and
monitoring
of
the
networked
Digivance
systems
are
effected
through
a
Network
Element
Manager
(NEM)
interface
which
requires
only
a
VT100
terminal/emulator
for
operation.
The
NEM
interface
language
consists
of
simple
ASCII
text
strings.
All
communications
are
input
as
either
SET
or
GET
commands
which
result
in
ASCII
text
string
responses
from
the
specified
system
or
systems.
The
DEMS
desktop
computer
may
also
be
used
locally
to
manage
the
networked
Digivance
systems.
Local
operation
is
through
the
DEMS
software
GUI.
HOST UNIT
LAPTOP WITH DEMS
(LOCAL INTERFACE)
LAPTOP WITH DEMS
(LOCAL INTERFACE)
18524-A
CD-ROM WITH DIGIVANCE
ELEMENT MANAGEMENT
SYSTEM (DEMS) SOFTWARE
REMOTE
UNIT
RS-232
RS-232