IP telephony /
Goralski, Walter.
IP telephony / Walter J. Goralski and Matthew C. Kolon. - New York : McGraw-Hill, c2000. - xxiii, 468 p. : ill. ; 23 cm.
9780071352215
Internet telephony.
004.6 GOR
IP telephony / Walter J. Goralski and Matthew C. Kolon. - New York : McGraw-Hill, c2000. - xxiii, 468 p. : ill. ; 23 cm.
9780071352215
Internet telephony.
004.6 GOR
