Switching to VoIP /
Wallingford, Ted
Switching to VoIP / Ted Wallingford - Sebastopol,CA : O'Reilly, c2005. - xxi, 477 p. : ill. ; 24 cm.
9780596008680
Internet telephony
TK5105.8865 / .W337 2005
Switching to VoIP / Ted Wallingford - Sebastopol,CA : O'Reilly, c2005. - xxi, 477 p. : ill. ; 24 cm.
9780596008680
Internet telephony
TK5105.8865 / .W337 2005