Abstract
BX. 25 is a data communications protocol which has been adopted as the standard protocol for host access to the Bell System's Operations System Network (OSN). BX. 25 is based upon the Consultative Committee on International Telephone and Telegraph (CCITT) recommendation X. 25. This paper describes a facility to automatically test that an implementation of BX. 25 conforms to the BX.25 specification. The facility, called the BX.25 Certification Facility (BCF), consists of a data base of tests, software to execute the tests, and a microprocessor dedicated to handling BX.25 communication. The output of the facility is a report which provides information concerning the degree to which an implementation conforms to the BX.25 specification.
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