• FAQs
• Articles
• Tutorials
• Web Tools
• Reference
• Blog
• Proxy
• Software
• Cell Phones

• Telephony FAQs
• How do I install telephone wiring?
• What are Tip and Ring?
• What is a 66 block?
• What is a 110 block?
• What is ground start?
• What is loop start?
• What are the frequencies of the telephone tones?
• What are the DTMF tone frequencies?
• What are the cordless phone frequencies?
• What is Caller-ID?
• How do I block Caller-ID?
• How do I defeat Caller-ID blocking?
• What is NEBS?
• What is TL1?
• What is a LATA?
• What is IntraLATA?
• What is InterLATA?
• What is an RBOC?
• What is an LEC?
• What is a CLEC?
• What is an IXC?
• What is SS7?
• What is the PSTN?
• What is POTS?
• What is a PBX?
• What is a VMB (Voice Mail Box)?
• What is an ACD?
• What is TTY/TDD?
• What are the types of call center services?
• What is call center outsourcing?
• What is a conference call center?
• How do I reduce conference call noise?
• What are common call center solutions?
• What is Computer Telephony Integration (CTI)?
• What is computer telephony software?
• What is call center software?
• What is an automated dialer?
• What is predictive dialer software?
• What is IVR?
• What is IVR software?
• What is teleconferencing?
• How does video conferencing work?
• What are the ABCD tones?
• What is the voltage used to ring a telephone?
• What are all of the * (LASS) codes?
• What is ANI (Automatic Number Identification)?
• What is an ANAC number?
• What is a ringback?
• What is a loop?
• What is a CNA number?
• What is a reverse telephone directory?
• What are numbers that always ring busy?
• What are numbers that temporarily disconnect phone service?
• What is war dialing?
• Is war dialing illegal?
• How can I make a lineman's handset?
• Where can I purchase a lineman's handset?
• What are Country Direct Numbers?
• What are phone switches?
• What is a milliwatt test line?
• What are 958 and 959 numbers?
• What are CLLI codes?
• What is DATU?
• What is a Proctor Test Set?
• What is a telecommunication audit?
• What is call back security?
• What is phone phreaking?
• What is a Blue Box?
• Do Blue Boxes still work?
• What is a Red Box?
• What is a Black Box?
• What do all the colored boxes do?
• Who invented the telephone?
• What is a Telephone Network Interface Device?
• What are Phone Prefixes?
• What is DTMF?
• What is a Teleconference Bridge?
• How can I Activate my TracFone?
• Main Menu
• » Networking
• » Physical Layer
• » Data Link Layer
• » Network Layer
• » Network Security
• » Wireless Networks
• » VoIP
• » Telephony
• » Mobile Telephony
• » Electronics
• » Radio
• » Television
• » Cryptology
• » Passwords
• » Smart Cards
• » Privacy
• » Malware
• » Vulnerabilities
• » Unix
• » Macintosh
• » Microsoft Windows
• » The Web
• » Web Publishing
• » E-mail
• » Instant Messaging
• » Databases
• » Computer Hardware
• » CPU's
• » Memory
• » Storage
• » Video
• » Audio
• » Multimedia
• » Satellite
• » Java
• » IT Management
• » Science
• » Miscellaneous

What is the PSTN?

The PSTN is the Public Switched Telephone Network.

The PSTN is the entire telephone system, except for private telephone systems which are managed by their own PBX.

Bookmark What is the PSTN?

Free White Papers on Telephony

Latest Blog Posts

• Acai Berry Spam via MSN

• Obama Seeks Power to Shut Down the Internet

• Help Beta Test Tech-FAQ 2.0!

• Windows 7 Forum

• Boston College: Ability to Use a Command Line is a Sign of Criminal Activity

• Google Hacked?

• Recycle your old phone – Make some money, and save the environment too!

• SourceForge vs. Freshmeat

• Fastest Web Browser: Google Chrome

• New Webmaster Forum