INTRODUCTION TO PACKET SWITCHING AND X.25 IN PUBLIC DATA NETWORKS

http://www-dos.uniinc.msk.ru/tech1/1994/packet/packet.htm

Introduction to Packet switches

http://www-dos.uniinc.msk.ru/tech1/1994/pac-swt/intro.htm

Frame Relay: Playing a Lead Role in SNA and LAN Internetworking

http://www.mot.com/MIMS/ISG/Papers/FR_WhitePaper/FR_WhitePaper.html

Frame Relay Networks - a survey

http://www.cis.ohio-state.edu/%7Ejain/cis788/frame_relay/index.html

Frame Relay: Springboard to the Future of High-Bandwidth Telecommunications

http://www.mot.com/MIMS/ISG/Papers/Springboard/spring.html#RTFToC1

Frame Relay: an Analysis of the Technology

http://pierce.eosc.osshe.edu/frame.html

Cisco site on frame relay

http://www.cisco.com/univercd/data/doc/cintrnet/ito/55149.htm

Frame Relay

http://www-dos.uniinc.msk.ru/tech1/1994/frame_re/frame.htm

Voice Over Frame Relay

http://www.data.com/lab_tests/pitch.html

Frame Relay FAQ

http://www.etinc.com/frfaq.htm

Frame Relay and ATM WAN Technology

http://www.combinet.com/warp/public/732/Frame/fratm_wp.htm

ISDN Guide

http://www.pacbell.com/products/business/fastrak/networking/isdn/info/isdn-guide/index.html

Dan kegel's ISDN page

http://alumni.caltech.edu/~dank/isdn/

The subject of ISDN

http://www.datacomm-us.com/technow/scan03/scan03.html

The subject of ATM

http://www.datacomm-us.com/technow/scan06/scan06.html

ATM

http://www.compucom.com/trg/trg7f.html

http://www.unm.edu/~network/presentations/references/index.html