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This page is under construction. Soon, you will find usefull information 

(in pdf format) concerning the following topics:

Internetworking, LAN and WAN Protocols and Technologies, Bridging, 
Routing, Network Management, Ethernet, FDDI, Token Ring, Frame Relay, HSSI, 
ISDN, PPP, SMDS, SDLC, X.25, VPNs, VoIP, DSL, SRB, ATM, DSL, MPLS, OSI, 
TCP/IP protocol family, SNA, DECnet, DECT, GSM, UMTS