|
 NSM-20M
Generation III Offers Increased Speed, Port Routing and Modem
support
VertexRSI's new NSM-20M Generation
III Nodal Satellite Multiplexer offers increased speed and improved
performance and versatility.
The NSM-20M is a small, lightweight
synchronous time-division multiplexer that provides aggregate
interfaces to satellite modems and group interfaces to terrestrial
equipment. The NSM-20M delivers cost-effective solutions to
satellite communication multiplexing demands. In its legacy mode,
the NSM-20M is interoperable with and functionally replaces the
legacy TD-1337 Tactical Satellite Signal Processor (TSSP). In its
enhanced mode, the NSM-20M is interoperable with MIDAS, GMT and
other Mil-Std-188-168 compliant equipment.
Nathan Knutson, Vice President of
Government Programs for TriPoint Global, said, "The new NSM-20M has
a number of enhancements and added features that improve its speed
and performance over previous NSM products. We've increased the
maximum aggregate port data rate to 20 Mbps and the maximum
group port data rate to 4.608 Mbps."
"The 'Third Generation' NSM
offers increased capability over
previous NSM models. Two additional T1/E1
ports and four additional CDI ports have been added to the NSM-20M
for a total of six of each. A new more powerful
port router gives users the flexibility to independently access
inputs including any combination of NRZ, CDI, T1/E1. The unit also has the
capability to prioritize any number of available reference clocks
for automatic detection, lock and fallback which makes it one of the
most reliable and versatile units available," Knutson added.
Full SATCOM Support:
The NSM-20M Generation III supports fully connected mesh networks
with up to seven nodes. It multiplexes up to 12 group inputs
(selected in any combination from the 25 ports) into a single
aggregate stream for transmission providing more efficient use of
bandwidth since guardbands between channels are not required. The
unit also features a digital signal processor that performs frame
synchronization acquisition, maintenance, initialization,
configuration, control telemetry, aggregate bit error rate
monitoring and built-in test functions.
Compact Design:
The NSM-20M Generation III is packaged in a single rack unit
enclosure. Packed into that space-saving framework
are:
- One multiplexer with one spare
aggregate output
- Six demultiplexers with one
spare demultiplexer switchover input
- 12 active terrestrial-side group
interfaces with satellite Doppler buffers (selected from 25
available ports), and
- A secure/non-secure voice
orderwire bridge with ring detection and generation
User-Friendly:
The NSM-20M Generation III is managed via an EIA RS-232 or RS-485
port connected to a personal computer. A user-friendly graphical
M&C interface provides extensive diagnostic reporting.
|
