TY - RPRT TI - Overview of integrated services digital network conformance testing AU - Collica, Leslie A AU - Collica, Leslie A AU - Roberts, Kathleen M AU - Su, David PY - 1992 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 823-1 DO - 10.6028/NIST.SP.823-1 ER -