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Q. What are the supplementary services?
new services are called supplementary services and some of the prominent ones are as below:Category 1:
Category 2:
Category 3:
Category 4:
A subscriber issues commands to an exchange to deactivate or activate a service, record or clear data in subscriber line data area or solicit an acknowledgement from exchange. As an instance, a user can disable or enable STD facility on his line by using a command. A command may have or may not have data associated with it. Number of digits in the data, when present, can vary depending upon the command. Consequently, subscriber commands are designed to be of variable length necessitating use of an end-of-command symbol.
what about power genration?
Disadvantages of SDR 1. Power consumption is more due to rapid switching of modes 2. Hardware design is not easy 3. Software bugs exist in the system
Consider the 220-V, 1800-r/min dc motor, controlled by a three-phase fully controlled rectifier from a 60-Hz ac source. The armature-circuit resistance and inductance are 1.5 and
Q. explain the architecture of SS7 and compare with seven-layer OSI architecture. Ans: A block schematic diagram of CCITT no. 7 signalling system is displayed in figure. Sig
Q. What is the basic working of Decoders? An n-bit binary code is capable of encoding up to 2 n distinct elements of information. A decoder is a combinational network that decode
Q. Explain about Common Control Switching System? Common Control Switching System: A functional block diagram of a common control switching system is displayed in Figure. Contr
The magnetic fields can be plot by using: i. Compass ii. Iron dust method .
Complier-High Level language It also translates the whole high level program into object program if it does not have any syntax error. The disadvantage of the in
Arithmetic Operations Various types of arithmetic operations like addition subtraction increment and decrement are performed in 8085 microprocessor. Generally in these ope
Explain ferroelectricity. Ferroelectricity: - Materials of ferroelectric have a high dielectric constant that is non-linear that is, this depends to a considerable extent on t
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