Equipment to perform the input/output function in a data-switching system handling a large number of connecting data lines has been one of the most expensive and space-consuming parts of the system
Message switching systems designed for nationwide use must provide a high degree of transmission reliability and protection against loss of messages.
A communication switching system must be designed with dependability and maintainability as an integral part of the overall plan. T h e N o .
The No. 1 Electronic Switching System, Arranged with Data Features (No. 1 ESS ADF), is a stored-program system which uses the basic No.
An essential element of the No. 1 ESS A D F store and forward data handling system is an economical, nondestructive readout, bulk m e m - ory with an average thruput of 153 kb/s.
A new store and forward message switching system has been designed and is now serving a nationwide network for the Long Lines Department of the American Telephone and Telegraph Co.
A No. 1 Electronic Switching System Arranged with Data Features (No.
l.i Facilities With the advent of the No. 1 Electronic Switching System, Arranged with D a t a Features (No.
The goal throughout the Xo.
The function of the bus system of No. 1 ESS is to provide intramachine data and control communication.
