Fill in the blank with the appropriate word.
The______is composed of the local loop, the central office, and the SS7 network.
A.
PSTN
Fill in the blank with the appropriate word.
The______is composed of the local loop, the central office, and the SS7 network.
Fill in the blank with the appropriate word.
The______is composed of the local loop, the central office, and the SS7 network.
A.
PSTN