TY  - BOOK
AU  - Ali,Syed Riffat
TI  - Digital switching systems: system reliability and analysis 
SN  - 0070010692
U1  - 621.387 21
PY  - 1998///
CY  - New York
PB  - McGraw-Hill
KW  - Telephone switching systems, Electronic
KW  - Reliability
KW  - Digital telephone systems
KW  - System analysis
N1  - Includes bibliographical references and index
ER  -