As there is a rapid spread of private networks and the Internet, NTT b
egan offering the short-haul leased line service with the high-speed D
igital Access 1500 in April of this year, in succession of Digital Acc
ess 64 in October 1996 and Digital Access 128 in December 1997. This a
rticle will introduce the background for DA1500 service, service image
, system configuration, and equipment developed by NTT for the service
.