INTERNET CONNECTIVITY
Typical Equipment

Introduction

Overview of Technology

Backbone Connectivity

Network Configuration
Signal Types and Characteristics
Terminals

Local Loop Connectivity - Internet Broadcast

Network Configuration
Signal Types and Characteristics
Hub Station
Remote Terminals

Local Loop Connectivity - Internet VSATs

Network Configuration
Signal Types and Characteristics

Local Loop Connectivity - Interactive TV

Typical Internet Local Loop VSAT Equipment

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Typical Internet Local Loop Equipment

  Typical Internet Broadcast Terminal Characteristics
Supplier Broadlogic Inc
Model Satellite Express 2530 XL
Outbound data to 5 Mb/s
Outbound access  
Outbound coding  
Outbound modulation  
Receive frequency  
Indoor Unit  
Configuration

external digital satellite receiver for PC

Ports  
Data rates  
Port types Universal Serial Bus (USB)
Protocols  
Dimensions 19 x 18 x 4 cm
Outdoor Unit  
Antenna diameter  
Noise figure  
IF  
Dimensions  

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  Typical Internet Broadcast Terminal Characteristics (continued)
Supplier Gilat
Model SkySurfer
Outbound data 2 to 35 Mb/s
Outbound access IP over DVB
Outbound coding as in DVB-S
Outbound modulation QPSK
Receive frequency Ku band, C band, extended C band
Indoor Unit  
Configuration

internal PCI card

Ports  
Data rates  
Port types 32 bit PCI bus
Protocols TCP/IP, UDP
Dimensions short PCI card
Outdoor Unit  
Antenna diameter 0.55 to 1.2 m
Noise figure  
IF 950 to 2150 MHz
Dimensions  

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  Typical Internet Broadcast Terminal Characteristics (continued)
Supplier Radyne Comstream
Model IBR.45 Internat Broadcast Receiver
Outbound data 1.5 to 45 Mb/s
Outbound access  
Outbound coding concatenated Reed-Solomon and Viterbi
Viterbi rates: 1/2, 2/3, 3/4, 5/6, 7/8
Reed-Solomon rates: 188/204 (DVB)
Outbound modulation QPSK, BPSK
Receive frequency  
Indoor Unit  
Configuration

external digital satellite receiver for PC

Ports  
Data rates  
Port types 10BaseT, 100BaseTx
Protocols UDP/IP, TCP/IP, IP Multicast
Dimensions  
Outdoor Unit  
Antenna diameter  
Noise figure  
IF 950 to 1750 MHz
Dimensions 8.5 (h) x 41.25 (w) x 31 (d) cm

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  Typical Internet Broadcast Terminal Characteristics (continued)
Supplier Radyne Comstream
Model MediaCast Satellite PC/Server Receiver Card
Outbound data 1.5 to 30 Mb/s
Outbound access IP over DVB
Outbound coding concatenated Viterbia nd Reed-Solomon
Viterbi rates: 1/2, 2/3, 3/4, 5/6, 7/8
Reed-Solomon: 204/188
Outbound modulation QPSK
Receive frequency  
Indoor Unit  
Configuration

internal PCI card

Ports  
Data rates  
Port types 32 bit PCI bus
Protocols  
Dimensions PCI card
Outdoor Unit  
Antenna diameter  
Noise figure  
IF 950 to 2150 MHz
Dimensions  

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  Typical Internet Broadcast Terminal Characteristics (continued)
Supplier ViaSat
Model SkyRelay.IP
Outbound data 768 kb/s to 4 Mb/s
Outbound access  
Outbound coding  
Outbound modulation  
Receive frequency  
Indoor Unit  
Configuration

external digital satellite receiver for PC

Ports  
Data rates  
Port types 10BaseT
Protocols  
Dimensions 7.6 (w) x 12.7 (l) x 5.6 (h) cm
Outdoor Unit  
Antenna diameter  
Noise figure  
IF 950 to 1450 MHz
Dimensions  

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Typical Internet VSAT Characteristics
Supplier Gilat
Model SkyBlaster
Outbound data 2 - 35 Mb/s
Outbound access IP over DVB
Outbound coding Viterbi/Reed-Solomon
Outbound modulation QPSK
Inbound data 38.4 - 153.6 kb/s
Inbound access FDMA - TDMA
Inbound coding Viterbi/Reed-Solomon
Inbound modulation MSK
Transmit frequency Ku band, C band, extended C band
Receive frequency Ku band, C band, extended C band
Hub  
Antenna diameter  
Tracking  
HPA  
Noise temperature  
IF  
Frequency control  
Pilot  
Uplink power control  
Capacity  
Hub Interface  
Hub port rates  
Number of hub ports  
Hub port types  
Protocols TCP/IP, UDP
Indoor Unit  
Ports n/a: uses 32 bit 33 MHz PCI standard bus
Data rates  
Port types  
Protocols TCP/IP, UDP
Dimensions  
Outdoor Unit  
Antenna diameter 0.55 to 1.2 m
HPA  
Noise figure  
IF 950 to 1525 MHz
Dimensions PCI standard card

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  Typical Internet VSAT Characteristics (continued)
Supplier Gilat
Model WebSat
Outbound data 9.6 to 2048 kb/s
Outbound access TDM SCPC
Outbound coding Viterbi rate 1/2, 3/4
Outbound modulation BPSK, QPSK
Transmit frequency C band, Ku band
Receive frequency C band, Ku band
Indoor Unit  
Ports  
Data rates  
Port types 10BaseT, 10Base2, Token Ring
Protocols  
Dimensions  
Outdoor Unit  
Antenna diameter 1.2 m min
HPA C band: 2 to 300 W
Ku band: 1 to 125 W
Noise figure  
IF  
Dimensions  

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Typical Internet VSAT Characteristics (continued)
Supplier RAD Data Comms
Model IP Direct
Outbound data  
Outbound access  
Outbound coding  
Outbound modulation  
Inbound data  
Inbound access  
Inbound coding  
Inbound modulation  
Transmit frequency  
Receive frequency  
Hub  
Antenna diameter  
Tracking  
HPA  
Noise temperature  
IF  
Frequency control  
Pilot  
Uplink power control  
Capacity  
Hub Interface  
Hub port rates  
Number of hub ports  
Hub port types  
Protocols  
Indoor Unit  
Ports  
Data rates  
Port types  
Protocols  
Dimensions  
Outdoor Unit  
Antenna diameter  
HPA  
Noise figure  
IF  
Dimensions  

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  Typical Internet VSAT Characteristics (continued)
Supplier Radyne Comstream
Model IPSat Internet Satellite Terminal
Outbound data to 70 Mb/s
Outbound access IP over DVB
Outbound coding concatenated Reed-Solomon and Viterbi
Viterbi rate: 1/2, 2/3, 3/4, 5/6, 7/8
Reed-Solomon rate: 188/204 (DVB)
Outbound modulation QPSK, 8PSK (future option)
Inbound data 9 kb/s to 2.5 Mb/s
Inbound access  
Inbound coding Viterbi rate 1/2, 2/3, 3/4, 5/6, 7/8
Sequential rate: 1/2, 3/4
Turbo: 0.79 (optional)
Inbound modulation QPSK, BPSK
Transmit frequency C band, Ku band, Ka band (future option)
Receive frequency C band, Ku band, Ka band (future option)
Hub  
Antenna diameter  
Tracking  
HPA  
Noise temperature  
IF  
Frequency control  
Pilot  
Uplink power control  
Capacity  
Hub Interface  
Hub port rates  
Number of hub ports  
Hub port types  
Protocols  
Indoor Unit  
Ports  
Data rates  
Port types 10Baset, 100BaseTx
Protocols UDP, TCP, IGMP, ARP
Dimensions  
Outdoor Unit  
Antenna diameter 0.75, 1.0, 1.2, 1.8, 2.4 m
HPA  
Noise figure  
IF Rx:: 950 to 2150 MHz
Tx: 70/140 MHz or L band (option)
Dimensions  

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  Typical Internet VSAT Characteristics (continued)
Supplier STM Wireless
Model Spaceweb
Outbound data  
Outbound access TDM
Outbound coding  
Outbound modulation  
Inbound data TDMA
Inbound access  
Inbound coding  
Inbound modulation  
Transmit frequency  
Receive frequency  
Hub  
Antenna diameter  
Tracking  
HPA  
Noise temperature  
IF  
Frequency control  
Pilot  
Uplink power control  
Capacity  
Hub Interface  
Hub port rates  
Number of hub ports  
Hub port types  
Protocols  
Indoor Unit  
Ports  
Data rates  
Port types  
Protocols Ethernet (IP)
Dimensions  
Outdoor Unit  
Antenna diameter  
HPA  
Noise figure  
IF  
Dimensions  

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