Page 10 - NEXEDGE-Ability
P. 10

 Digital Trunked Wide Area IP Networks
NEXEDGE System Bridge – From 48 to 1,000 Sites/24 Networks
The network option leverages the power of IP to link multiple digital trunked sites (up to 1,000 with NEXEDGE Gen2) for wide area roaming and calling — across a campus, city, county or region. Scalable networks can be created over existing IT assets, private microwave, spread-spectrum links or carrier services using standard 10/100 Base-T Ethernet switches and routers.
The 60,000 group ID and unit ID network capacity is sufficient for large organizations and multi-user system sharing.
Natural disasters and emergencies happen without warning, and NEXEDGE makes it possible to build a highly flexible system to respond swiftly and dynamically to immediate challenges.
Subscriber units use advanced control channel hunting algorithms, RF signal strength and digital signal quality monitoring to automatically determine the best site for accurate and resource- sensitive roaming and registration decisions.
• All Call Calls all fleets or all units in a fleet in emergencies and for critical incident response.
• Remote Group Add Adds a new GID to subscriber units remotely over-the-air to form a workgroup for emergencies, special events, special operations or critical incidents.
• Control/Traffic Channel Switching Designates a Traffic Channel as a new Control Channel should the original become disabled. Disabled Traffic Channels are automatically removed from service.
[ Digital Trunked Wide Area IP Network ]
NEXEDGE was originally introduced as a trunking digital radio system that offered clear audio and advanced features for a modest investment. In order to meet the needs of operators expanding to large-scale regional systems, the NEXEDGE Bridge (with KPG-1005SB System Bridge Software*) and the NEXEDGE Bridge Server have been developed.
The new system bridge products designed for NEXEDGE Gen2 offers a nearly 250% increase in connectivity, from 48 to 1,000 maximum sites and up to 24 individual networks can be connected – even if they employ different system codes. System operators can now offer seamless auto-roaming to their users.
By supporting all the voice and data features of a local network across a large-scale system, NEXEDGE Gen2 serves the requirements of SMR and private operators for state-wide, multi-state or national systems.
*Scheduled for release fourth quarter 2016.
[ NEXEDGE System Sites/24 Networks ] System
Extended Coverage
System B
Because an RF signal weakens with distance, analog reception becomes increasingly noisy and intermittent. The low BER of NXDN improves reception in fringe areas, thereby effectively increasing range by as much as 20% over FM analog, resulting in a 50% increase in coverage area for digital 6.25 kHz.
Compared to digital 12.5 kHz bandwidth operation, the narrower 6.25 kHz bandwidth enabled by the FDMA technology of NXDN extends range by 15%. Receiver filters are narrower and can thus achieve superb C/N (carrier-to-noise) ratio. The net result is superior clarity over a 30% wider coverage area.
8 9 10
7 2 3 11
6 1 4 12
16 5 14 13 15
6.25 kHz
At a total of 2150 sq. miles coverage:
6.6-mile radius per site / only 16 site total
30% 20 921
wider 19 8 21011
coverage, 18 76 13412
smaller 17 investment!
System C
513 16 15 14
12.5 kHz digital system
At a total of 2150 sq. miles coverage:
5.8-mile radius per site / 21 site total

   8   9   10   11   12