In this connection, an improved pair gain method, utilizing the Tl carrier (PCM) system, has been developed by the Bell System and other telepone ... Figure 9- 14 is a functional block diagram of the pair gain arrangement evolved by Bell Telephone Laboratories, Inc. It employs a subscriber loop carrier, designated SLC-96, which can serve from 24 to 96 customer lines depending on the concentration.
|Title||:||Basic electronic switching for telephone systems|
|Publisher||:||Prentice Hall - 1982-01-01|