UNITED STATES DEPARTMENT OF AGRICULTURE

Rural Electrification Administration

SUBJECT: REA General Specification for Digital, Stored Program Controlled Central Office Equipment

TO: All Telephone Borrowers

REA Telephone Staff

EFFECTIVE DATE: June 28, 1993

EXPIRATION DATE: Date of change of 7 CFR part 1755.522 by rulemaking

OFFICE OF PRIMARY INTEREST: Central Office Equipment Branch, Telecommunications Standards Division

FILING INSTRUCTIONS: Discard REA Bulletin 345-165, REA General Specification for Digital, Stored Program Controlled Central Office Equipment, REA Form 522, dated August 14, 1989, and replace with this bulletin. File with 7 CFR 1755 and on REANET.

PURPOSE: This specification covers REA general requirements for a digital telephone central office switching system, which is fully electronic and controlled by stored program processors. A digital switching system switches information which is digitally encoded from any input port to a temporarily addressed exit port. The information may enter the system in either analog or digital form and may or may not be converted to analog at the exit port depending on the facility beyond. The switching system shall operate properly as an integral part of the telephone network when connected to physical and carrier derived circuits meeting REA specifications and other generally accepted telecommunications practices.

This bulletin is a "user friendly" reformat of the text codified in 7 CFR 1755.522 published at 58 FR 30937, dated May 28, 1993. Every effort has been made to ensure the accuracy of this document. However, in case of discrepancies, the regulation at 7 CFR 1755 section 1755.522 is the authorized source.

Robert Peters 6/4/93

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Acting Administrator Date

AVAILABLE IN HARD COPY ONLY