TY  - BOOK
AU  - Davidson, Jonathan...[et.al]
TI  - Voice over IP fundamentals
SN  - 9781587052576
U1  - 004.6 DAV 
PY  - 2007///
CY  -  Indianapolis, Ind. 
PB  - : Cisco Press, 2006, 
KW  -  Internet telephony.
KW  - Computer network protocols.
KW  - Digital telephone systems.
KW  - data networking
KW  - Voice over IP fundamentals
KW  - Jonathan Davidson
ER  -