This chapter talks about the public switched telephone network (PSTN). It discusses what comprises the PSTN, what sorts of technologies have been used to complete the connections, how the signaling systems operate, and the typical components and transmission capacities of the basic backbone architecture. This chapter also discusses what intelligent networks (INs) provide in terms of service logic and feature availability. Finally, this chapter describes some of the trends in the evolution of the PSTN that will support the new generation of applications.
The PSTN Infrastructure |
Part I: Communications Fundamentals
Telecommunications Technology Fundamentals
Traditional Transmission Media
Establishing Communications Channels
The PSTN
Part II: Data Networking and the Internet
Data Communications Basics
Local Area Networking
Wide Area Networking
The Internet and IP Infrastructures
Part III: The New Generation of Networks
IP Services
Next-Generation Networks
Optical Networking
Broadband Access Alternatives
Part IV: Wireless Communications
Wireless Communications Basics
Wireless WANs
WMANs, WLANs, and WPANs
Emerging Wireless Applications
Glossary