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Inmarsat-4 To Enhance Communication Across Indian Ocean From May 28

Illustration of I-4 in orbit. For the first time, subscribers to services such as Fleet F77 128kbit/s, Fleet F55 and F33, and maritime mini-M, will be able to use their equipment to the full in areas where previously Inmarsat-3 spot-beam coverage was incomplete.

London, UK (SPX) May 23, 2005
Maritime customers will benefit from enhanced coverage across the Indian Ocean Region from May 28 when the new Inmarsat-4 (I-4) satellite is currently scheduled to enter commercial service.

The time for the hand-over from I-3 to the new generation I-4 satellite has been set for 20:00 hours UTC on May 28, subject to confirmation nearer the day.

Existing users of maritime spot-beam services will benefit immediately from enhanced coverage right across the Indian Ocean Region (IOR) once transition is complete.

The switch-on and handover of traffic to the I-4 is expected to be seamless.

For the first time, subscribers to services such as Fleet F77 128kbit/s, Fleet F55 and F33, and maritime mini-M, will be able to use their equipment to the full in areas where previously Inmarsat-3 spot-beam coverage was incomplete.

To take full advantage, users just select the IOR in the usual way when they log on with their terminals.

When the I-4 goes live, these and other existing services will migrate to the 19 wide spot beams on the new spacecraft - providing unbroken coverage right across the ocean region.

The following services will benefit from the coverage enhancement:

  • Fleet F77 - 128kbit/s Mobile ISDN data
  • Fleet F55 - 64kbit/s Mobile ISDN, MPDS and fax
  • Fleet F33 - 9.6 kbit/s data, MPDS and fax mini-M - voice, fax and data Services supporting the Global Maritime Distress and Safety Services (GMDSS) - Inmarsat B, C, E and Fleet F77 - are already global and will remain unaffected.

    Piers Cunningham, Inmarsat's head of maritime market management, said: "The improved network infrastructure we have put in place for the I-4s, and the powerful new satellites themselves, will ensure the long-term availability and continued evolution of our maritime services.

    "The unrivalled power and flexibility of the I-4s will allow us to make service enhancements that will be of immediate benefit to the global maritime community."

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