Synchronous digital hierarchy switch system
Assignee3C
InventorChu Hong James Wang
Life of this patent
Estimating the term…
Abstract
There is provided a digital switch system for connecting a telephone central office with a number of subscriber lines, in which the system includes at least one central office-digital trunk interface switch which allows digital signals to be transmitted between the switch system and the central office, and a number of subscriber line interface switches which allow signals to be transmitted between the switch system and the subscriber lines, in which each of the subscriber line interface switches is connected with at least one subscriber line via at least one digital-to-subscriber line converter, and in which the central office-digital trunk interface switch and the subscriber line interface switches are connected in a ring-shaped structure.
Claims10
A digital switch system for connecting a telephone central office with a plurality of subscriber lines, wherein said system includes at least one central office-digital trunk interface switch member allowing signals to be transmitted between said switch system and said central office, and a plurality of subscriber line interface switch members allowing signals to be transmitted between said switch system and said subscriber lines, wherein each of said subscriber line interface switch members is connected with at least one subscriber line via at least one digital-to-subscriber line converting member, and wherein said central office-digital trunk interface switch member and said subscriber line interface switch members are connected in a ring-shaped structure.
Dependencies are inferred from the claim text.