Patent ID: 6125117
Filing Date: 2000-09-26
Classification: H04L,H04Q

Abstract:
A local telephone network comprising:a plurality of local switching systems;a plurality of synchronous-to-asynchronous converters (SACs), wherein each of said SACs is connected to at least one of said local switching systems, is configured to convert a synchronous stream of data to and from one or more of said local switching systems to and from an asynchronous stream of data of a prespecified packet switch and includes means for adding and removing a circuit identifier code for said synchronous stream of data into and out of said asynchronous stream of data for use in routing said data to a destination; anda plurality of asynchronous transfer mode packet switches configured so that packets arriving at a prespecified input port are routed to a preassigned output port, each of said packet switches being connected to a predetermined number of said SACs;each of said plurality of local switching systems being connected to all of the other local switching systems by permanent virtual circuits through one or more of said SACs and one of said packet switches.