Module 21 – Working with Directors Flashcards
1
Q
ISDN uses 2 B channel data streams. What is the combined bandwidth of these two channels? Is it:
A
Well done! 128 Kb/s are carried over 2 X 64 Kb/s channels. Which is CD Quality.
2
Q
ISDN users require a CODEC at either end for the system to work. What is the CODEC for? Does it:
A
- Digitally encode and decode data signals
A CODEC digitally encodes and decodes data and transmits it over an Integrated Systems Digital Network, or ISDN for short!
3
Q
An ISDN CODEC will use psychoacoustic masking, and bit reservoir buffering to achieve data reduction. What is the typical data reduction ratio achieved:
A
12:1
