TY  - GEN
AU  - Davidson, Jonathan
AU  - Peters, James,
AU  - Gracely, Brian
TI  - Voice over IP fundamentals
T2  - Cisco Press fundamentals series
SN  - 1578701686
AV  - TK5105.8865 .D38 2007
PY  - 2007///
CY  - Indianapolis, IN
PB  - Cisco Press
KW  - İnternet telefon sistemi
KW  - Internet telephony
N1  - Includes index
ER  -