Publications

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.

As mentioned in the description of systems objectives' for the No.

l.i System Requirements As the name of the call store implies, its prime function is to provide the read-write or erasable storage for all the call-related temporary information processed by the No

The No. 1 ESS must compare favorably with existing switching systems in cost, reliability of operation, space requirements and ease of maintenance.

Companion articles in this issue 1 2 3 discuss the logical organization and diverse responsibilities of the central control (CC) as t h e primary information processing unit of the No.