TY  - GEN
AU  - Davidson,Jonathan
AU  - Gracely,Brian
AU  - Peters,James
TI  - Voice over IP fundamentals / 
SN  - 1578701686
U1  - 004.6,DAV 
PY  - 2000///
CY  - Indianapolis, IN
PB  - Cisco Press
KW  - Internet telephony
N1  - Part I. PSTN (Page-3), Part II. Voice Over IP Technologies (Page-127), Part III. IP Signaling Protocols (Page-227), Part IV. Voice Over IP Applied (Page-307)
ER  -