ISDN Tutorial - Comments

ISDN Tutorial - a text-based tutorial on ISDN (Integrated Services Digital Network), covering what ISDN is, ISDN History, advantages, BRI , PRI, Channels, interfaces, Layer 1, 2 and 3 Protocols what happens when a call is set up and more

Ron   13-June-2002 - 09:43:30 Good basic intro to ISDN.

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