ISDN Centrex Applications in a Large Scales Software Development Environment
01 January 1991
ISDN Centrex is a reality in the United States. Unfortunately, the penetration of that reality has been limited to a relatively small number of customers and in many cases only a small portion of the capabilities are actually being utilized. There are several reasons why business and industry has not fully embraced ISDN including. Factors that limit ISDN deployment include lack of