Integrated Services Digital Network

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/integrated-services-digital-network

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is Integrated Services Digital Network known for?Established foundational digital network architecture and signaling protocols
2. What is the category?International telecommunications network standard
3. What is the primary interfaces?Basic Rate Interface (BRI) and Primary Rate Interface (PRI)
4. What is Integrated Services Digital Network (ISDN)?ISDN is a digital network that lets phones, computers, and video talk together over the same wires. It replaced old analog phone lines with fast digital lines.
5. How does ISDN send voice and data at the same time?ISDN uses digital signals on regular copper wires and mixes many channels together so that voice and data can travel at the same time.

Bearer Channel (B-channel): Carries user traffic, such as voice calls or data transmissions.
Data Channel (D-channel): Carries signaling and control information for network management and call setup.
Circuit Switching: Establishes a dedicated physical path for the duration of a communication session.
Packet Switching: Data is broken into packets, each routed independently and reassembled at the destination.