We offer two brands and the widest range of bandwidth-efficient modems available in the satellite industry. Based on technologically advanced components and innovative design, our modems include application software to provide superior performance and features. With the flexibility and features provided by our modems, customers are increasing satellite link efficiency, optimizing bandwidth and reducing the total cost of ownership associated with satellite communications. Plus, the IP-enabled modems take bandwidth optimization to a higher level – enabling significant bandwidth savings, improving transmission quality and increasing control of bandwidth provisioning.

 

Whether used to support satellite-based cellular backhaul, to transmit streaming video from an SNG truck, to power mission-critical military communications, or to connect remote offices, our modems offer the performance, flexibility, security and control you require.

 

Regardless of network configuration, we have modems to support your unique satellite communications needs.

• Variety of forward error correction
• Selection of modulation techniques
• DoubleTalk® Carrier-in-Carrier® bandwidth doubling
• IP Module
• L-Band or 70/140 MHz support

• Data rates from 2.4 kbps to 238 Mbps
• Range of interfaces
• Drop & Insert
• Redundancy
• Management & control

Our revolutionary and award-winning DoubleTalk Carrier-in-Carrier is based on Applied Signal Technology’s patented “Adaptive Cancellation” technology that allows full duplex satellite links to transmit concurrently in the same segment of transponder bandwidth - doubling your throughput. When combined with our advanced forward error correction and modulation techniques, DoubleTalk Carrier-in-Carrier delivers improved satellite transponder utilization and unprecedented operating expense savings.

We offer traditional forward error correction, plus optional, advanced methods.  When combined with higher order modulation, it provides increased coding gain, lower decoding delay, and significant bandwidth and power savings.

 

VersaFEC® – The next generation Forward Error Correction that provides maximum coding gain with the lowest possible latency to support cellular backhaul and other latency-sensitive voice, video and data applications. VersaFEC is a system of short-block, low latency Low Density Parity Check codes, and is an excellent alternative to existing LDPC and DVB-S2 codes.

 

Low Density Parity Check (LDPC) Coding & 8-QAM Modulation – When used in networks with lower FEC coding rates and higher data rates, the power and bandwidth savings offered by LDPC are most apparent. In conjunction with LDPC is 8-QAM modulation, which exhibits far superior performance compared with conventional 8-PSK. When LDPC and 8-QAM are combined, satellite transponder utilization can be maximized, resulting in minimized operating expenses.

 

Turbo Product Coding (TPC) – Offers increased coding gain, lower decoding delay, and significant bandwidth savings when compared to traditional methods. The range of code rates offered spans Rate 5/16 through 0.95, depending on modulation type.

Modems with integrated IP module incorporate advanced features that maximize satellite link efficiency for IP networks. With optional, advanced features such as Header Compression, Payload Compression and Quality of Service (QoS), bandwidth optimization can be taken to a new level. This IP functionality is commonly deployed in offshore, satellite news gathering, enterprise, government and cellular backhaul installations.

We offer modems ideally suited for military and government applications, engineered to meet a range of standards:

• Defense Satellite Communications System (DSCS)
• MIL-STD-188-165A
• DISA Certified

To support deployment in remote and hub environments, we offer both
L-Band and 70/140 MHz systems, plus data rates from 2.4 kbps to 238 Mbps.  Our extensive range of IF frequencies provides the options you need for operation with single or multiple transponders, and configurations to accommodate Low Noise Block Converters (LNBs) and Block Up Converters (BUCs). Our product line includes both open and closed network modems. For open configurations, we are fully compliant with Intelsat IESS-308, 309, 310, 314 and 315, plus DVB-S and DVB-S2. Additionally, a wide range of interfaces is available.

 

Drop & Insert – The Drop & Insert (D & I) multiplexer works with the G.703 interface to enable our modems to transmit or receive fractional parts of a T1 or E1 data stream. Most commonly utilized in cellular backhaul environments, several variants of D & I are available.

 

Redundancy – To support your mission-critical applications, our offerings include both external switch compatibility and on-board, built-in redundancy, with either fully automatic or manual switching operations. 1:1 and 1:N solutions are available for most products.

A number of methods are available for controlling and managing our satellite modems, including:

• Front panel display and keypad for local configuration and control
• Serial monitor & control port
• Network-based management options
• Simple Network Management Protocol (SNMP)
• Web server (HTTP)
• Telnet
• Vipersat Network Products – Bandwidth & Capacity Management

[ back to top ]