TY  - BOOK
AU  - Donohue,Denise
AU  - Mallory,David
AU  - Salhoff,Ken
TI  - Cisco voice gateways and gatekeepers / 
SN  - 158705258X
U1  - 004.695076 
PY  - 2007///
CY  - Indianpolis, IN
PB  - Cisco Press, 
KW  - Computers
KW  - Internet
KW  - Telephone
KW  - Computer networks
KW  - Examinations
N1  - Includes appendix and index
ER  -