What are the names of the two wires used by a traditional home phone to carry voice traffic and signaling information? (Select two.)
Who invented the first direct-dial telephone switch?
Almond Brown Strowger
Alexander Graham Bell
Which type of telephone switch is most appropriate for a business needing to support 10,000 phones?
Identify three types of signaling used on PSTN networks.
How many voice channels can be carried over a T1 circuit in a traditional PSTN/PBX environment?
"Dial tone" is an example of which type of signaling?
Which of the following are potential advantages of a VoIP network? (Select three.)
Reduced dedicated circuit costs
More mature technology than PBX/key system approaches
Lays a foundation for more advanced services
Reduced physical plant costs
How much voltage does a telephone switch apply across the tip and ring wires?
-48 volts of DC
-48 volts of AC
+90 volts of DC
+90 volts of AC
Which VoIP component is used to forward calls between different types of networks?
Which VoIP component is used to mix multiple audio streams?