PSTN
PSTN is an abbreviation used for Public Switched Telephone Network. PSTN is a traditional communication technology. In this technology, the speech and data are transferred through the copper cables. PSTN is basically a complex network which consists of telecommunication switches, transmission lines, and many other equipment. It was primarily used for transportation of voice and fax signals over long distances. The PSTN technology is analog in nature. It is used in smaller businesses or companies. The PSTN technology does not offer simultaneous line connection. It can handle only one line connection at a time.
Operation of PSTN
The operation of PSTN consists of following stages
- At first, the operation of PSTN is done with the help of Analog domain. It makes use of analog signals to perform the task of transmitting voice signals. The voice signals are converted into analog signals, then it is transmitted over the copper wires and then at the receiving end it gets converted back to voice signals.
- The operation of PSTN is carried over a circuit-switched network topology.
- Whenever a call is initiated, a particular and dedicated path is set up between the calling and the called parties. This setup of dedicated path helps in ensuring real-time communication. This also ensures the continuous transmission of voice signals.
- It also makes use of hierarchical network of exchanges or switches to handle calls. There are various types of exchanges like local exchanges handle call within a specific local area, while long-distance exchanges handle call within a large geographic area.
- It uses in-band signaling for the purpose of call setup, supervision and teardown.
PSTN
Difference Between ISDN and PSTN
In this article, we will cover communication protocols that are used for the transmission of data and voice. We will have a look at what is ISDN and PSTN. Then we will look at the differences between them. After this, we will look at the advantages, disadvantages and applications of both.
Table of Content
- What is ISDN?
- PSTN
Difference between ISDN and PSTN- Advantages and Disadvantages of ISDN and PSTN
- Applications of ISDN and PSTN
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