TY  - BOOK
AU  - Chakraborty,Shyam
TI  - IMS multimedia telephony over cellular systems:  VoIP evolution in a converged telecommunication world
SN  - 0 470 05855 8
AV  - TK6570.M6I44 
PY  - 2007///
CY  - Chichester
PB  - John Wiley & Sons
KW  - Cell phone systems
KW  - Internet telephony
N1  - Includes bibliographical references and index
ER  -