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 What is DialSat?

    
From basic telephony to high speed internet :

  • Public voice service: Prepaid, Public cal Offices (PCO), Stand alone payphones
  • High speed internet service
  • Advanced features for SOHO and small businesses (e-mail,
    e-commerce services s etc.)
  • Fax (G3 Standard)
  • Voice Mailing for incoming calls to payphones
  • Leading the rural telephony market
  • DialSat is the first platform in the market to have operational bundled Telephony and high speed solutions
    • Toll quality telephony
    • Always on Advanced services
  • Mesh or star architecture
  • Up to 6 voice lines
  • Gateways solutions
  • Add-on services
  • Unique satellite access scheme
  • Lowest VSAT power consumption
  • Telephony and applications using the same hub based-band, NMS and VSAT equipment
  • "Always on" High speed Internet service
  • High bt rates for high speed access
    • Inbound : Up to 153.6 KB
    • Outbound : Up to 8 MB
  • LAN Connectivity on VSAT board - not occupying a phone line
  • Asymmetric packet switched network access
     VSAT - OUTDOOR UNIT (ODU)
  • Standard TVRO LNB
  • SSPA
    • KU-band : 0.5W, 1W
    • C/XC-band : 2W
    • Enhanced Operating Temperatures:
      -40° to +60°C, up to 100% humidity
  • Typical Antenna Sizes
    • KU-band : 0.6 to 1.2m
    • C/XC-band 1.8 m
     VSAT - INDOOR UNIT (IDU)
  • In Door Unit(IDU) with 3 expansion slots each with 2 FXS RJ-11 interface
  • On Board LAN port
  • Low power consumption AC or DC feed

DialSat Built to Perform and Expand with Ease. The DialSat is designed for maximum performance, flexibility and quality: toll-quality, full duplex voice; automatic voice/fax/data channel; two-way, always on asymmetric routing and more. Read below for detailed information on DialSat architecture and technical specifications. Architecture DialSat network consists of a central hub, Multiple PSTN gateways, satellite channels and remote terminals (VSATs).

A remote terminal consists of a small outdoor antenna (typically 0.55 to 1.2 meters), an Outdoor Unit (ODU) and an Indoor Unit (IDU). The hub consists of an RFT and base band equipment. The base band includes a Hub Satellite Processor (HSP), a Hub Voice Processor (HVP), a Hub Protocol Processor (HPP) and a Network Management System (NMS). Each HVP can be connected directly to the PSTN using a digital E1 line. The HPP is used to interface with the Internet Service Provider (ISP). The hub design permits easy scalability and incorporation of new features. DialSat's Network Management System enables to monitor and control the remote terminals, and to gather call data records from the sites for billing operations. Client-server architecture enables remote NMS capability. PSTN gateways are remote terminals that serve a different function. They establish digital E1 connectivity with several central offices in various locations. There are two options available. Satellite gateways, which utilize satellite channels, and terrestrial gateways, which carry compressed voice data over terrestrial leased lines.

Bundled Telephony and Internet Voice/Fax/Data Transmission With DialSat, the analog voice input is digitized and compressed to 4.8 or 6.4 kbps. The compressed voice is packetized and transmitted to the hub or to another remote terminal via the satellite. At the destination, a voice/fax/data card decodes the incoming voice packets into digitized voice, which is then reconverted into analog form. The voice/fax/data channel is configured for voice mode by default. When a Group 3 fax transmission is detected, the channel automatically switches to fax mode. Upon completion of the fax message, the channel automatically returns to voice mode. Internet Access The DialSat provides two-way, always on asymmetric routing. The data is time-Multiplexed with the telephony data, enabling simultaneous telephone calls and Internet browsing. Internet access is carried out without occupying a telephone line. The hub transmits a high-speed outbound carrier of up to 8 Mbps containing data. The VSATs transmit an inbound carrier of up to 153.6 kbps. The VSAT acts as a router, enabling the connection of more than one PC. An Ethernet LAN port at the VSAT is used for PC connection (RJ-45). Internet enabling technologies such as TCP spoofing and Internet Page Acceleration are incorporated to ensure a superior user experience.

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