Carrier grade voice over IP
Collins, Daniel.
Carrier grade voice over IP [Book] / Daniel Collins. - 2nd ed. - New York : McGraw-Hill, c2003. - xviii, 522 p. : ill. ; 24 cm. - McGraw-Hill networking professional .
All.
0071231552
Internet telephony.
004.69
Carrier grade voice over IP [Book] / Daniel Collins. - 2nd ed. - New York : McGraw-Hill, c2003. - xviii, 522 p. : ill. ; 24 cm. - McGraw-Hill networking professional .
All.
0071231552
Internet telephony.
004.69