Due to the rapid changes in telecommunication in China, some of the information are no longer correct. Please report additions and corrections to Yidao Cai. 2/2-1996

V1.1: Feb, 1996
V2.0: May, 1996 V3.0: A major revision was done by
Ray Chow, August, 1996.
V4.0: Revision by Ray Chow on Jan. 22, 1997.
V4.1: Revision by Yidao Cai on Feb. 8, 1997, based on information collected in Taiwan and Mainland China.
V5.0: Revision by Ray Chow on July 1, 1997.
V5.1: July 20, 1997.
V5.2: December 12, 1997.
V6.0: Major revision by Ray Chow on March 1, 1998.
V6.1: March 27, 1998
V6.2: August 17, 1999
V6.3: April 1, 2000.
V7.0: Major revision supplied by Ray Chow on May 22, 2001.