![](/images/new-backgrounds/1236448/2364483x1.webp)
Intellectual property related to this product and registered to AT&T Corporation has been transferred to Lucent Technologies Incorporated.
Any references within this text to American Telephone and Telegraph Corporation or AT&T should be interpreted as references to Lucent Technologies Incorporated. The exception is cross references to books published prior to December 31, 1996, which retain their original AT&T titles.
Lucent Technologies – formed as a result of AT&T’s planned restructuring – designs, builds, and delivers a wide range of public and private networks, communication systems and software, consumer and business telephone systems, and microelectronic components. The