WILLCOM Inc. (株式会社ウィルコム, Kabushiki-gaisha Wirukomu?) is a Japanese PHS operator, offering flat-rate wireless network data transmission and flat-rate voice calls for its subscribers.
The company was formerly known as DDI Pocket, a subsidiary of KDDI. In 2004, the Carlyle Group acquired a majority stake from KDDI and changed the name of the company in February 2005.
Overview
Willcom, Inc. is a telecommunications company operating a PHS network covering almost all of Japan, and has the largest share of the Japanese PHS market. As other PHS operators are withdrawing their services, it is bound to become the only remaining PHS operator.
The number of its subscribers passed four million on May 29, 2006.
Willcom Okinawa Co., Ltd. is a subsidiary for operations in Okinawa.
History
The company was founded as a planning-company in 1994, and started to offer telephony services in 1995 under the brand DDI-Pocket. As an operator, it has mainly base stations of 500mW-radio output, unlike other PHS operators, which had mainly built 20 mW base stations.
The high output level caused some radio interference and it was difficult to place calls in dense areas such as Shinjuku, Tokyo during the network's early days, although these problems were eventually solved. On the other hand, high output (and sensitivity) can also earn wider coverage of area per base station, therefore the operator was able to expand its coverage faster than the competition. The market between PHS operators and cellular telephony companies was incredibly fierce, and until October 1996 it was not possible to make calls between PHS and cellular telephones. Enven then, charges for calls between the two different systems were high.
PHS became popular because of its lower cost, causing cellular telephone companies to reduce their rates, which were initially considered too expensive. Furthermore, the coverage of the cellular companies quickly expanded to comparable levels. With the competitive advantage of PHS reduced, DDI-Pocket went through difficult years at the end of the 1990's and beginning of 2000s. The declining market for PHS service has caused the launch of its flat-rate service and its buyout by Carlyle.
Stock holders
- As of June 23, 2009[1]
See also
References
External links
