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Linkstar DVBS2 Overview - Page 2
Dynamic Bandwidth Allocation, combined with guaranteed Quality of Service (QoS) and TCP acceleration features, makes the LinkStar-S2 system more efficient and faster than other TDMA systems. The combination automatically increases the speed of the return channel to give you the throughput you need. ViaSat is always working to bring you the highest return channel data rates in the industry, so even large multimedia files are quickly transmitted.
Bandwidth on Demand (BoD) allows users to seamlessly increase
bandwidth as it is needed, for as long as it is needed. BoD is ideal for
multi-user Intranet and Internet applications as well as large file transfers.
Committed Information Rate (CIR) mode provides users with nearinstantaneous
availability of all the bandwidth in their SLA, ideal for
guaranteed Quality of Service (QoS) applications. Combined with the
LinkStar-S2 system’s advanced application-triggered CIR feature, this is the
right choice for VoIP and videoconferencing services.
Application-Triggered BoD/CIR allows dynamic assignment of BoD/
CIR resources, matching customer-specific application requirements.
CIR Reallocation offers CIR when the user needs it. Once the needs
are satisfied, the bandwidth becomes available to the entire network. This
allows operators to fully utilize their bandwidth resources.
Slotted Aloha grants immediate network access to low-bandwidth
applications. This powerful feature minimizes latency and is particularly
suited for transactional applications such as lotteries, point-of-sale (POS),
and automated teller machines (ATMs).
Turbo Coding and Optimized Spectral Shaping on the return
channels enable you to use your satellite bandwidth more efficiently and
further increase return channel throughput.
DVB-Based Architecture enables service providers and satellite
operators worldwide to build open-standard networks for IP data, Internet
access, video streaming, telemedicine, voice over IP, or distance learning.
For operators that require standardization on the return channel, the
LinkStar-S2 network offers a DVB-RCS compliant version with a simple overthe-
air software download.
Web-Based Network Management gives you configuration, control,
and management of your VSAT network using a standard browser. The
NCC provides additional management through traffic statistics, call detail
records, and an SNMP interface.
Reduced Operating Costs are achieved through over-the-air software
upgrades of remote terminals without site visits.
Scalability, with each Regional NCC (RNCC) managing up to 8,000
sites, and a single NCC controlling up to 10 RNCCs for a total of up to
80,000 network nodes.
User Groups enable you to logically group remote terminals to apply
common operating parameters to members of the group. This powerful
capability is ideally suited to the network operator managing multiple
customers or classes of access.
IP Header Compression reduces the bandwidth required for a voice
call by eliminating extraneous and redundant protocol information.
Maritime/Mobile Operation for installation on moving platforms.
Though originally designed for the maritime market, this feature adapts to
any moving platform.
Control Channel Encryption using the LinkStar Control Channel
Security Architecture (LCCSA) provides secure communications of the
LinkStar-S2 system control channel.
Six-Level Quality of Service (QoS) offers six queues at the scheduler
level on each remote terminal. You get a finer prioritization of user traffic
based on profiles defined using the IP QoS feature.
DHCP Relay and VLAN Tagging enable service providers to offer
VPN services to multiple customers. The LinkStar-S2 system enables end-toend
VLAN separation of customer traffic, re-use of private addresses, and
automatic IP address assignment to devices at remote sites.
HTTP Acceleration boosts the speed of your customers' web surfing
experience. Using a pre-fetch proxy, the LinkStar-S2 significantly reduces the
time that a user waits for HTML objects to appear on screen.
Hybrid Star/Mesh Network Architectures provide flexibility for a
multitude of applications in one integrated network. Sharing a common
DVB-S2 outlink, the LinkStar-S2 system is interoperable with ViaSat’s
LinkWayS2 mesh VSAT system.
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