What are the supplementary services, Electrical Engineering

Assignment Help:

Q. What are the supplementary services?

new services are called supplementary services and some of the prominent ones are as below:

Category 1:

  • Abbreviateddialling
  • Recorded number calls or no dialling calls
  • Call back when free.

Category 2:

  • Call forwarding
  • Operator answer.

Category 3:

  • Calling number record
  • Call waiting
  • Consultation hold
  • Conference calls.

Category 4:

  • Automatic alarm
  • STD barring
  • Malicious call tracing

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.


Related Discussions:- What are the supplementary services

#bode plots.., #how to draw bode plots for a transfer function

#how to draw bode plots for a transfer function

What is work-sharing constructs, Q. What is Work-Sharing Constructs? A ...

Q. What is Work-Sharing Constructs? A work-sharing construct distributes execution of associated region amongst the members of team which encounters it. A work-sharing construc

Find the real and reactive powers per phase, Q. A 345-kV, 60-Hz, three-phas...

Q. A 345-kV, 60-Hz, three-phase transmission line delivers 600 MVA at 0.866 power factor lagging to a three-phase load connected to its receiving- end terminals. Assuming that the

Determine tick of the material, Tick off the material, which is different f...

Tick off the material, which is different from the group (A) Constantan.            (B) Manganin. (C) Nichrome.               (D) Brass. Ans: Tick off the materi

Working of closed cycle and open cycle brayton cycle, Give the layout of a ...

Give the layout of a modern steam power plant and illustrate it briefly. With the help of schematic diagrams illustrate the construction and basic working of closed cycle and op

Hexadecimal number system, Hexadecimal Number System Similar  to octal ...

Hexadecimal Number System Similar  to octal number hexadecimal number system is also used to represent long  binary  numbers in  smaller  form. In microprocessor  we use  hexad

Compare with memory, Compare with memory The contents  of the memory...

Compare with memory The contents  of the memory  of the memory  location  pointed by HL  register pair are compared with the  contents of the accumulator. The  instruction f

Define voltage divider rule, Define voltage divider rule Voltage drop a...

Define voltage divider rule Voltage drop at every resistor that connected by serial can be search by using voltage divider rules (VDR).

Explain aas instructions in 8086 family, Explain AAS instructions in 8086...

Explain AAS instructions in 8086 family with example and their effect on flag. AAS: it is stands for ASCII adjust after subtraction; this is used to adjust the AX register l

Determine the shaft power output, Determine the shaft power output: A ...

Determine the shaft power output: A 6-pole, 50 Hz, 3-phase induction motor running on full load develops a useful torque of 180 Nm when the rotor emf frequency is 2 Hz. Determ

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd