TY  - BOOK
AU  - Ronayne, John P.
TI  - Introduction to digital communications switching
SN  - 8185614660 (pbk.)
PY  - 1992///
CY  - Indianapolis, Ind.
PB  - Howard W. Sams & Co., 
KW  - Digital communications
KW  - Digital telephone systems
N1  - Includes index; Includes bibliographical references
ER  -