  2001 - Putting Voip to Work Softswitch Network Design and Testing (Hardcover) ISBN-13: 9780130409591 ISBN-10: 0130409596 Genres: Computers & Technology, Substores ?  1999 - Ip Telephony the Integration of Robust Voip Services (Hardcover) ISBN-13: 9780130141187 ISBN-10: 0130141186 Genre: Computers & Technology ? |
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