vsat technology and equipment

JanUX V-M VSAT Systems

Nashita uses leading JanUX V-M dedicated VSAT systems for its dedicated solution. The key benefits of JanUX can be summarized as following:

• Higher data throughput compared to DVB/SCPC and TDMA systems.
• Dedicated, guaranteed bandwidth / QoS.
• Upgradeable to 10Mbps uplinkwithout any need for software or hardware change or upgrades
• Up to 52Mbps downlink capacity without any need for hardware or software change or upgrades.
• 3 level prioritization for video-conferencing, VoIP and data utilization
• Remote management and maintenance.
• Configurable DHCP and NAT server.
• Embedded firewall.
• Turbo function

The JanUX is managed and monitored remotely by Nashita NOC and no user intervention is required after initial set-up of user specific parameters.

Key Features

• Easy installation, remote management & maintenance
• Guaranteed bandwidth/QoS - any speed up to 52Mbps per customer
• Transparent for dynamic BGP routing (EBGP multi-hop mode)
• Configurable Network Address Translation (NAT) for all network blocks specified in RFC1918
• Configurable DHCP server
• Embedded firewall
• Online reconfiguration without system reload
• Environmental monitoring
• Automatic problem alerting to Nashita’s NOC
• Cost efficient solution

Technical Specifications

• Satellite interface directly to LNB (Ku band)
• LAN Interface 10/100BaseT
• Sustained speed 52Mbps
• Power Requirements 115/230V, 50/60Hz, 200W Peak
• Environmental 0° - 55°C

TBB vs. DVB and TDMA

TBB is a high quality, high-speed Receive Only service providing Global Internet Access up to 52 Mbps with full data throughput. It is available in Europe, Middle East, Asia and Africa and is part of the Akamai network.

Following graph compares encapsulation overhead of TBB and DVB MPE: TBB capacity is fully guaranteed at all time in the same way as having a dedicated SCPC link. Technically a TBB service is even better in particular when comparing to a low-speed SCPC service. The reason is that any latency/jitter effects due to serialisation-delay is avoided because the TBB carriers are running at a clock-rate of 52Mbps. This Broadband is combined with Vizada’s SCPC Link for Uplink over Intelsat satellite system (Dedicated SCPC link). Broadband uplink facility is through Nittedal Teleport outside Oslo, which is the largest Point of Presence to internet connectivity. All major Internet Service Providers can be reached from here through direct fiber connections to the U.S. and European backbones. (View the schematics).

(click to enlarge)

The most efficient for terminals with constant sustained throughput (like Internet service provision for larger scale user groups or sites that intend to provide VoIP) is SCPC and TBB.