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For digital lines the device that is used to establish the communications link between the customer equipment and the local loop is CSU/DSU. The call setup time of a circuit switched WAN implementation considered a drawback is data cannot be transferred until a circuit has been established.
A squelch circuit is installed in a radio communications receiver to shut down the output when no speech is being received, in order to suppress interference noises. All airborne VHF/UHF communications receivers have them.
Packet Switching - Computer Communications (Digital)Circuit Switching was used for old fashioned telephony. At present, many companies use VOIP (Packet Switching) for voice communications.
You need a dedicated circuit for carrying voice communications that cannot be shared with others. That won't happen with packet switching, which will result in choppy and non-understandable conversations.
a mlln circuit is a data circuit
Consider two points (A and B) in an electric circuit. An open circuit between A and B means there is no electrical connection between A and B. A short circuit between A and B means there is an electrical connection between A and B.
difference between series is one pathway through circuit,difference between parralal is more then one pathway through circuit.
A short circuit is an abnormal connection between two nodes intended to be at different voltages. A voltage circuit is caused intentionally for the purpose of voltage sensing. A ground circuit occurs between a phase and the ground.
What is the Relationship between resistance and inductance in a RL circuit?
The answer is YES... They outsource their order entry, ASR, LSR and circuit tester departments.. All to INDIA!
magnetic circit has a magnet and electri circuit has electricity
A squelch circuit turns off the audio input to the speaker when there is no radio signal being received. This stops the speaker from producing annoying noise when no radio signal is being received.