Question

Which of the following are the advantages with the communication Networking known as “Integrated Services Digital Network (ISDN)” ?

(i) Fast digital connectivity and the capability of providing for the integration of voice, video and other services

(ii) It accelerates the flow of information

(iii) It provide an opportunity to share hardware and software by several users

(iv) It provides the facilities of call waiting, diversion of calls, and conference calls

(v) It provide the facility for controlling data base access and other security requirements

1. i, ii, v are correct
2. i, ii, iv are correct
3. ii, iii, v are correct
4. iii, iv, v are correct

Answer 1

Correct Answer - Option 2 : i, ii, iv are correct

Integrated Services Digital Network(ISDN) is an interconnected set-up arrangement of communication standards for instant digital transmission of speech & data on the same communication line. Voice, video, data & network services can be transferred via ISDN of the public switched telephonic network.

ISDN integrated digital services are:-

1. Bearer service: Transmission of voice, data and video between the users is facilitated without network manipulated by the bearer network
2. Teleservice:It includes telephonic service,teletex,videotex,teleconferencing.
3. Supplementary service: These include reverse charging,call waiting & message handling.

Advantages of ISDN are:

1. It offers digital services operations through same copper wires.
2. It accelerates the flow of information
3. Fast digital connectivity and the capability of providing for the integration of voice, video, and other services
4. Signal broadcast through telephonic lines.
5. High data transfer rate.
6. Allows connectivity of multiple devices over single line.
7. It provides the facilities of call waiting, diversion of calls, and conference calls

Drawbacks of ISDN are:

1. It's difficult to set up, mostly outdated in the modern context of Official communication terminologies, the unreliable mode in terms of proofreading and authentication due to the scope of distortion. and it's easy for the system to fail at times thereby paving way for other services like VOIP (Voice over internet protocol) and other similar services to take place of ISDN.