Multi-Layer Optimization
The Advanced VSAT incorporates industry-leading optimization at every layer.

• DVB-S2 and VersaFEC with ACM/VCM enable the most efficient physical layer without compromising latency
• Ultra low overhead Streamline Encapsulation (SLE) and Enhanced GSE enable the most efficient link layer
• Header compression and lossless payload compression enable the most efficient transport for IP datagrams
• RAN optimization minimizes the bandwidth required for mobile backhaul
• WAN optimization provides TCP connection management, TCP optimization, image reduction and smoothing, caching, bandwidth pooling, and other capabilities for significant bandwidth savings
• Advanced QoS and Group QoS ensure the highest quality of service with minimal jitter and latency for real-time traffic, priority treatment of mission critical applications and maximum bandwidth efficiency

Scalable
The Advanced VSAT provides a highly scalable and cost-effective solution to meet the needs of a diverse user community. A network can start with a few sites and expand to hundreds of sites. The bandwidth can also scale as needed – the outbound can scale from as low as 1 Mbps to as high as 160 Mbps. The return can scale from as low as 16 kbps to as high as 15.35 Mbps.

Advanced Forward Error Correction (FEC)
The Advanced VSAT incorporates latest forward error correction technologies:

• DVB-S2 for the high-speed shared outbound traffic; delivers unmatched bandwidth efficiency for high-speed traffic.
• VersaFEC (low-latency LDPC) for return traffic; a patented system of high-performance, short-block, low-latency LDPC codes designed to support latency-sensitive applications, such as mobile backhaul over satellite. VersaFEC provides excellent coding gain with lowest possible latency. VersaFEC's coding performance is similar to that of DVB-S2 (short block) with up to 95% lower latency.

The combination of DVB-S2 for the outbound and VersaFEC for the return provides maximum spectral efficiency with minimal latency.

Adaptive Coding & Modulation (ACM)
Satellite users have traditionally relied on worst-case link margin to overcome rain fade and other impairments, which leads to significant inefficiencies. ACM converts the available link margin into increased throughput – a gain of 100% or more is possible.

With the ability to maximize throughput under all conditions – rain fade, inclined orbit satellite operation, interference and other impairments – ACM allows each remote to achieve maximum throughput thereby maximizing network efficiency and availability.

ACM operation is tightly coupled with advanced QoS and other optimization technologies to maintain desired service levels.

Variable Coding & Modulation (VCM)
Without VCM, a shared link is sized to support the most disadvantaged site – due to smaller antenna size or satellite footprint location disadvantage. This leads to significant inefficiency in network design.

VCM is a technique that allows different Modulation and Code Rate (MODCOD) for different users and applications sharing a common outbound. The MODCODs are statically assigned based on link budget and unlike ACM, VCM does not require a feedback mechanism.

RAN Optimization
RAN Optimization significantly reduces the satellite bandwidth required for mobile backhaul. The Advanced VSAT's RAN optimization capabilities allow users to select the level of RAN optimization to achieve the desired link quality and bandwidth savings, providing ultimate control. And, the pre-emptive bandwidth management maintains superior voice and service quality even under WAN congestion conditions.

Multi-Service Connectivity via Advanced VSAT Solutions

Advanced Packet Processing
For efficient IP networking and transport over satellite, the product features advanced packet processing capability with very low overhead encapsulation, header compression, lossless payload compression and QoS. The QoS combined with header and payload compression ensures the highest quality of service with minimal jitter and latency for real-time traffic, priority treatment of mission critical applications and maximum bandwidth efficiency.

• Header Compression
• Lossless Payload Compression
• Low Overhead Encapsulation
• Quality of Service (QoS)
• Group Quality of Service

Seamless E1 and IP/Ethernet Operation
The Advanced VSAT enables simultaneous E1 and IP/Ethernet operation in a hub-spoke topology, while supporting advanced capabilities including RAN optimization, header compression, lossless payload compression, QoS and ACM. In addition to supporting multi-service networks, this allows for seamless migration from an E1 RAN to an all IP RAN.

Ethernet Synchronization & G.703 Clock Extension
Mobile networks require precise synchronization of base stations, which is a challenge when using IP backhaul. Most operators are forced to use GPS-based external equipment for site synchronization. The Advanced VSAT incorporates key technologies for synchronization, including G.703 Clock Extension and IEEE 1588v2 Precision Time Protocol (PTP).

WAN Optimization and Application Acceleration
WAN optimization and application acceleration provide TCP connection management, TCP optimization, image reduction and smoothing, caching, bandwidth pooling, and other capabilities. In addition to a significant improvement in user experience, they can also reduce bandwidth by 20-70% for web traffic.

Dynamic Bandwidth Management (dSCPC)
The dSCPC capability enables dynamic allocation and sharing of bandwidth among users. A number of automatic and manual switching modes are supported. Automatic switching includes load switching, application switching, ToS switching, QoS switching and VESP switching. A network operator or maintenance personnel can also trigger manual switching.

Roaming Oceanic Satellite Server (ROSS)
The ROSS enables global roaming for maritime users. Its functions include interfacing to the Antenna Control Unit (ACU), maintaining vessel location information, maintaining satellite footprint maps, maintaining exclusion zones, and initiating beam switching and handoff as the vessel moves through the satellite footprint. The ROAM protocol offers a common management interface for the ROSS and the ACU by providing a set of commands, information, interfaces and status queries.

Outdoor Modems
ODM-840 and ODMR-840 are available for deployment at shelterless sites. Due to low power consumption, they are ideal for solar powered sites. They also meet IEC 60529, IP 67 for protection from dust and rain.

Key Specfications