There are two nodes. These nodes need to establish communication among each other. So they communicate via Circuit Switching Technology for a specific duration which is also known as Communication Session. The circuit works as if they are physically connected with an electric circuit.
How this Technology works:
While the bits are transferred, the bit delay is constant.
Circuit works as monotonous. Each Circuits can't be used by other callers until and unless this circuit gets free that means every time we have to start a new connection. Even if there isn't any actual communication in a specific circuit the circuit can;t be used by other callers. This mechanism is known as Connection oriented. Only the idle channels are available for new calls.
This Technology is not limited to voice circuits.This can also be extended to signal content.
Advantage:
Disadvantage:
According to wikipedia:
"Early telephone exchanges are a suitable example of circuit switching. The subscriber would ask the operator to connect to another subscriber, whether on the same exchange or via an inter-exchange link and another operator. In any case, the end result was a physical electrical connection between the two subscribers' telephones for the duration of the call. The copper wire used for the connection could not be used to carry other calls at the same time, even if the subscribers were in fact not talking and the line was silent."
Examples:
PSTN
ISDN B-Channel
Cheers!!!
Ethan
How this Technology works:
While the bits are transferred, the bit delay is constant.
Circuit works as monotonous. Each Circuits can't be used by other callers until and unless this circuit gets free that means every time we have to start a new connection. Even if there isn't any actual communication in a specific circuit the circuit can;t be used by other callers. This mechanism is known as Connection oriented. Only the idle channels are available for new calls.
This Technology is not limited to voice circuits.This can also be extended to signal content.
Advantage:
- provides a continuous transfer of bits without any traffic overhead
- It is highly reliable
Disadvantage:
- It is inflexible. Referring to upper parts ,you would have got the meaning of inflexible. Hence it is being used for specific applications.
- It wastes too much bandwidth especially when the speaker is listening not talking.
- Have a lot of overhead while the communicaiton set up but once the communication is set up the channel is fast and reliable.
Circuit Switching vs Packet Switching
According to wikipedia:
"Early telephone exchanges are a suitable example of circuit switching. The subscriber would ask the operator to connect to another subscriber, whether on the same exchange or via an inter-exchange link and another operator. In any case, the end result was a physical electrical connection between the two subscribers' telephones for the duration of the call. The copper wire used for the connection could not be used to carry other calls at the same time, even if the subscribers were in fact not talking and the line was silent."
Examples:
PSTN
ISDN B-Channel
Cheers!!!
Ethan
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