Public Switched Telephone Network

This chapter includes contents: Types of remote network connections, public switched telephone network (PSTN), modems, modem communications, configuring a modem, Virtual Private Network (VPN) communications,...

13p tangtuy08 21-04-2016 39 2   Download

Zntegrated Services Digital Network (ISDN) Most public telecommunication operators throughout the world have now at least commenced the modernization of their networks by introducing digital transmission and digital switching into the public switched telephone network (PSTN). Simultaneously many operators are converting their networks to integrated services digital networks (ISDN) which will allow customers access to a variety of services while reducing the cost of provision of these services both to the administration and to the customer....

19p huggoo 20-08-2010 83 7   Download