Switching to VoIP

Wallingford, Ted

Switching to VoIP / Ted Wallingford - Beijing ; Cambridge [Mass.] : O'Reilly, ©2005. - xxi, 477 p. : ill. ; 24 cm.

9788173665318

HCL


Internet telephony.
Téléphonie Internet.
Switching to VoIP
Ted Wallingford

621.38212 WAL

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