Global Teleports: CDM570 Vipersat VSAT hub gateways for VoIP and internet access worldwide.

Hub dish

For a long time I have wanted to see a VSAT hub operating in the UK. This objective was achieved on 6th March 2005 when a friend of mine, Roger Boddy, managed to buy a big dish. The large 9.5m Ku band dish is really sensitive and technically ideal as a VSAT hub. Since then we have expanded to provide a Global Teleports service with additional teleports activated in the Washington (USA) and Adelaide (Australia). Each teleport sites operates to multiple satellites.

Using all three teleport sites we provide a centrally managed Vipersat service worldwide.

Global Teleports (UK) Ltd is licensed to access satellites over the Atlantic, Indian and Pacific Oceans to give coverage from Tokyo and Australia in the East, Africa in the South, plus the Caribbean and North and South America in the West.

Set up initially as a joint venture vehicle, Global Teleports (UK) Ltd is now wholly privately owned and has independent licences and planning permission to develop a business focused on broadband services via satellite in both C and Ku band. Global Teleports (UK) Ltd has an established operations HQ at Brookmans Park in Hertfordshire on the site of an (ex-BBC) operational radio station.

Contact details: Roger Boddy. Phone: +44 (0) 1707 648311 Fax: +44 (0) 1707 648 319
Email: enquiries@globalteleports.com Post: Global Teleports, Brookmans Park Radio Station, Hatfield, Herts, AL9 6NE, England

CDM-570L VSAT network diagram

The Vipersat network uses modern high-performance CDM-570-L satellite modems each with an embedded IP Router, to provide the interface between your LAN traffic and the satellite links that connect remote stations to the hub and to each other. Network management software allows the hub to set customer ports and system configuration and manages the protocol, modem, RF equipment and IP broadband networking.

The satellite modems use the latest turbo products forward error correction codes (FEC) and 8-PSK and 16-QAM modulation schemes and pulse shaping to produce unrivalled spectral efficiency which is just what I am looking to encourage so as to get the best value for money out of the space segment.

Using Cisco routers and traffic management software in the Vipersat system Quality of Service (QoS) rules are applied which prioritise traffic according to need. VoIP phone call voice packets are given the highest priority. Great benefit is also obtained using header compression which can reduce VoIP but rated from approx 32kbit/s to 13 kbit/s and from payload compression which reduces the length of text type files such as html download web pages.

The network management tool is called Vipersat Management System (VMS). This controls all the three worldwide teleports sites from one screen. The modems may be operated in dedicated SCPC mode, or if required, to share bandwidth based on application and data load using switched TDMA. If you only use the link occasionally there is no point holding a link open all the time. This effectively enables the network to better handle connection oriented applications and reduce network congestion. The VMS also allows for dynamic point to point connections to be established between remotes. The result is an economical and flexible network with bandwidth shared and directed where it is needed for any mix of IP voice, video or data traffic.

NSS7 Ku and C band satellite coverage

Caribbean and South America:- Cuba, Jamaica, Trinidad, Bonaire, Barbados, Dominican Republic, Guatemala, Honduras, Nicaragua, El Salvador, Costa Rica, Panama, Colombia, Venezuela, Guyana, Surinam, Ecuador, Peru.

NSS7 Ku band: Europe and N. Africa.

Including: Algarve, North Africa, Tangier, Iraq, Morocco, Algeria, Tunisia, Albania, Bulgaria, Romania, Hungary, Poland.

Vipersat service area using AM1 satellite

NSS7 C band beam Africa

Including: Algeria, Tunisia, Libya, Egypt, Morocco, Mauritania, Ghana, Togo, Benin, Burkina Faso, Mali, Sudan, Gabon, Congo, Zaire, Sudan, Ethiopia, Kenya, Somalia, Tanzania,

Southern Africa

Angola, Zambia, Zimbabwe, Mozambique, Namibia.

Ku band access West Africa:
SCPC-DVB-S

Senegal, Gambia, Guinea, Mali, Sierra Leone, Liberia, Ivory Coast, Ghana, Burkina-Faso (Upper Volta), Togo, Benin, Niger, Nigeria, Chad, Cameroon, Equatorial Guinea, Central African Republic (CAR).

Coverages of the Indian Ocean region, Iraq to Indonesia and Australia are also available from the teleport in Adelaide.

In co-operation with:

Wholesale / quantity supply: Ku band 3 watt TRIA: BUC and universal PLL LNB combined for sale

► Page created 21 Jan 2005, amended 1 July 2008 (Eric Johnston)

Satsig.net Home page

Satellite internet broadband service providers in the UK.

Other links: Vipersat CDM 570 modem brochure 1.1 Mbyte pdf file

Linksys router handbook pdf 1.4M Alternative UK CDM570 teleport hub
We still have a few SMR5000 modems available: SMR5000 user guide pdf 1.2M, SMR5000HL info 2 pages 112k,