____ is the designation for a digital telephone circuit that transmits voice or data at 1.544 Mbps.
a. ISDN
b. T-1
c. VSAT
d. T-32
Answer: B
____ is the designation for a digital telephone circuit that transmits voice or data at 1.544 Mbps.
a. ISDN
b. T-1
c. VSAT
d. T-32