Explains why telephone lines are called loops.
One of the topics covered in the TCO CTNS Certified Telecommunications Network Specialist Course 2201 The PSTN www.teracomtra... and the
TCO CTA Certification: Certified Telecommunications Analyst Course 2401 "Fundamentals of Telephony and Voice over IP"
www.teracomtra...
Course Lessons
1. Introduction
2. History of Telecommunications (USA and Canada)
3. The Public Switched Telephone Network (PSTN)
4. Analog Circuits and Sound
5. The Voiceband
6. Plain Ordinary Telephone Service (POTS)
7. Signaling: Pulse Dialing and Dual Tone Multiple Frequency (DTMF)
8. Signaling System 7 (SS7)
For the most up-to-date information and sample lessons visit www.teracomtra....
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