by William A. Flanagan
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VoIP and Unified Communications
ISDN
ATM, asynchronous transfer mode, user's ...
Frames, packets and cells in broadband n...
T-1 networking
Understanding Voip
ISDN and Broadvand ISDN with Frame Relay...
Data Communications Networking (McGraw-H...
Frame relay networks
Total Area Networking
Dynamic worlds
Total area networking