  Internet Communications Using Sip (Hardcover) ISBN-13: 9780471413998 ISBN-10: 0471413992 Genres: Computers & Technology, Substores ?  Internet Communications Using Sip Delivering Voip and Multimedia Services with Session Initiation Protocol [Networking Council] (Hardcover) ISBN-13: 9780471776574 ISBN-10: 0471776572 Genre: Computers & Technology ?  Sip Beyond Voip the Next Step in the Ip Communications Revolution (Paperback) ISBN-13: 9780974813004 ISBN-10: 0974813001 ? |
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