The bearer service capabilities offered by ISDN are ______________
A. speech 3.1
B. speech 3.1 kHz
C. 1 kHz audio
D. speech 3.1 kHz audio
Answer:D
The bearer service capabilities offered by ISDN are ______________
A. speech 3.1 B. speech 3.1 kHz C. 1 kHz audio D. speech 3.1 kHz audio