TY  - BOOK
AU  - Donohue,Denise; Mallory,David; Salhoff,Ken
TI  - Cisco Voice Gateways and Gatekeepers 
SN  - 158705258X
AV  - TK5105.8865 .D66 2007
U1  - 004.3 DON 2007 22
PY  - 2007///
CY  - Indianapolis
PB  - Cisco Press
KW  - Internet telephony
KW  - Gateways (Computer networks)
N1  - "IP communications"--Cover; Includes index
UR  - http://www.loc.gov/catdir/toc/fy0705/2005935269.html
ER  -