ISDN conformance testing guidelines [microform] : guidelines for implementors of ISDN customer premises equipment to conform to both national ISDN-1 and North American ISDN Users' Forum Layer 3 Basic Rate Interface Basic Call Control abstract test suites / Leslie A. Collica and Dawn M. Hoffman.
Gaithersburg, MD : U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; Washington, DC : For sale by the Supt. of Docs., U.S. G.P.O., 1994.