TY  - BOOK
AU  - Madsen, Leif
AU  - Meggelen, Jim Van
AU  - Smith, Jared
TI  - Asterisk: the future of telephony
SN  - 9780596510480
U1  -  004.695 
PY  - 2007///
CY  - Sebastopol,USA
PB  - O'Reilly & Association
ER  -