Lesson 6 - ISDN Connection Flashcards
Define ISDN
Integrated Services Digital Network - standard for digital communication (voice, video, data, and other network services)
What is the actual concept behind ISDN?
Upgrade the global telephone communications network from analog to digital. It integrates speech and data on the same lines
ISDN is not meant to be a product or a service. Explain.
It’s a guideline or platform on which services can be developed.
List the three main characteristics of ISDN.
End to end digital connection.
Common channel signaling.
Multipurpose user interface.
Describe the term “out-of- band signaling”
Signaling for the circuit is done on a separate channel, out of human hearing frequency.
Describe the term “in-band signaling”.
Carries the signaling on the same circuit that carries voice and data.
What is meant by the term “multipurpose user interface”?
User can connect to voice, data and video and other services using a single type standard device that meets ISDN specifications.
What type of transmission media is used to transmit voice data and video signals?
Twisted pair
With digital data transmission systems continuously evolving, modems and conventional data devices will eventually become ?.
un-needed
An ISDN connected network allows for the rapid transmission of ? and ? communication.
data and voice
ISDN electronics create ? information channels on a one-pair connection to the local exchange company.
three
How many channels are used for voice and/or data transmission?
two
The third channel provides a digital path for ? which ferries instructions between the local telephone company and the residential equipment.
Signaling
The ISDN standards provide a method which ensures that the users interface and the digital transmission method, called ?, are the same. Thi sis what ensures a seamless transfer of ?.
Protocol
Information
