TY  - BOOK
AU  - Viswanathan , Thiagarajan
TI  - Telecommunication switching systems and networks
SN  - 8120307135
U1  - 621.384 VIS 
PY  - 2003///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - Telecommunication -- Switching Systems
KW  - Networks
N1  - Table of Contents
Foreword. Preface. In
ER  -