C-Band_IP

	High Reliability Internet Connectivity
	No Phones Lines Required, No Dial-Up, Always On
	Built-In Firewall, Router, DHCP, VoIP Capabilities

VSAT technology represents a cost effective solution for users seeking an independent communications network connecting to the global Internet.

VSAT networks offer value-added satellite-based services capable of supporting not only access to the Internet, data, LAN, voice/fax communications, and can provide powerful, dependable private network communications solutions.

This solution is for high quality professional users, combining reliability and service features. A high speed, broadband service which operates at speeds up to 11 Mbps per second on the outbound transmission from the hub, with shared, 1 Mbps return feeds from remote sites.

Terminal Description

The service also uses industry-leading technologies including, offering unique capabilities that optimize Internet IP application performance through efficient bandwidth usage, greater flexibility, and enhanced reliability.

By operating on C Band one transponder can provide coverage for the whole of Africa, and the rain fades typically affecting Ku band services will be avoided.

The terminal can operate at speeds from 128Kbps - 2Mbps and bandwidth can be dynamically assigned to users with large files to transfer.

The standard supplied for up to a 384Kbps return from the remote, is a 5 W L-Band Block Up Converter (LBUC) and Low Noise Block Down Converter (LNB), to receive and transmit data to the satellite, with a 1.8m dish.

	TDMA outbound and inbound carriers
	built-in firewall
	TCP acceleration in both directions
	DNS caching to speed up recovery of data
	Router equivalent to Cisco 1601
	3DES encryption chipset onboard

Custom Indoor Unit

NSS 7

Downlink footprint

Telstar 10 footprint

Example 1.8m C-band Antenna

A Deterministic TDMA Network Architecture (D-TDMA) algorithm allocates bandwidth among multiple remote sites, based on instantaneous conditions. Several times a second, the D-TDMA feature will allocate bandwidth based on criteria such as the queue depth at each remote, the guaranteed throughputs, Quality of Service and Prioritization requirements, as well as any Rate Limiting established at each remote.

It results in industry-leading efficiency that lets the satellite carry more applications and traffic over the available bandwidth

Interconnection to Internet and VoIP Switch

At the UK end of the link there is a high speed uncontended backhaul to the Tier 1 Internet backbone at the London Internet Exchange (LINX) at Telehouse, with built-in redundancy. There is also full 24 x 7 support, provided as part of the ongoing bandwidth provision, which is proactively monitoring the state of the link.

Project Support

	Astutechnologies will manage the whole project to ensure that installation is timely and an Ethernet interface to any existing networks is operational.
	Customers will be responsible for obtaining their own VSAT licenses in each country. Astutechnologies can also provide initial assistance and examples of how to apply, and what has been successful for other users.

Maintenance & Support Options

	It is strongly recommended that a suitable UPS be provided for each VSAT unit if no generator supplied/UPS is available at each office.
	Support would normally be provided via email, or over a VoIP line, including remote access to the client network over the new satellite link. This support will be proactive in ensuring that the system is working and that all traffic is getting through in timely fashion.

To download the C Band IP VSAT .pdf file click here

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