TY  - BOOK
AU  - Sulkin,Allan
TI  - PBX systems for IP telephony
SN  - 0071375686
AV  - TK5105.8865 S944P
PY  - 2002///
CY  - New York, N.Y.
PB  - McGraw-Hill
KW  - INTERNET TELEPHONY
KW  - TELEPHONE
KW  - PRIVATE BRANCH EXCHANGES
N1  - Includes index
ER  -