Transpac (cable system)

TRANSPAC or Trans-pacific cable (TPC) is a series of undersea cables under the Pacific Ocean.

Transpac 1

TRANSPAC-1 (TPC-1) was laid by AT&T's cable ship C.S. Long Lines.[1] and opened in 1964. It connected Hawaii, Guam, Japan, The Philippines, Hong Kong and Vietnam. It had a capacity of 142 channels. TRANSPAC-1 was part of the network that supported the Apollo 11 moon landing mission in 1969.[2]

Transpac 2

In 1975, Transpac-2 (TPC-2) connected Guam, Taiwan, Korea, Hong Kong and Singapore with 845 channels.

Transpac 3

Transpac 3 (TPC-3), which went into service April 18, 1989,[3] increased capacity to 3780 channels.[4]

TPC-5CN

The TPC-5CN cable network is a 25,000 km fiberoptic ring, carrying 5 Gbit/s in each channel.

History

1975 Shore-end cable section (Guam) and shallow sea section of the No.2 Trans-Pacific Cable (TPC-2)
Shore-end cable section (Okinawa) and shallow sea section of the No.2 Trans-Pacific Cable (TPC-2)[5]
1987 Shore-end cable section (Chikura side) and shallow sea section of the No.3 Trans-Pacific Cable (TPC-3)
1988 No.3 Trans-pacific Cable (TPC-3) (Laid cable length: approx. 3,834 km)
1991 No.4 Trans-Pacific Cable (TPC-4) (Laid cable length: approx. 1,259 km)
1993 Shore-end cable section (Ninomiya side) and shallow sea section of the No.5 Trans-Pacific Cable Network(TPC-5)
1993 Shore-end cable section(Ninomjya side)of the No.5 Trans-Pacific Cable Network(TPC-5)
1994 Shore-end cable section(Miyazaki side)of the No.5 Trans-Pacific Cable Network(TPC-5)
1995 No.5 Trans-Pacific Cable Network(TPC-5) (Laid cable length: approx.2,958 km)

References

  1. ↑ AT&T Archives: C.S. Long Lines, AT&T Archives and History Center, March 21, 2011
  2. ↑ Mike Dinn. "The Manned Spaceflight Network".
  3. ↑ Calvin Sims (April 18, 1989). "Fiber-Optic Calling to Japan Starts Today". New York Times.
  4. ↑ Huurdeman, Anton A. (2003). The Worldwide History of Telecommunications. Wiley-IEEE. p. 405. ISBN 0-471-20505-2.
  5. ↑ "Corporate History". Kokusai Cable Ship.


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