Exam 14: More on Telecommunications

Which of the following has an altitude of a few thousand miles?

PSTN signaling in the United States uses ________.

In telephone wiring,there needs to be four wires for each computer on the floor in ________.

Which of the following is good for mobile stations?

Call restriction refers to a switch's ability to control incoming calls to a station.

Message units are a time and distance pricing method that can be used to charge for local calls.

Plenum wiring is needed for ________.

With 888 numbers,the ________ pays and pays ________ per minute than direct distance dialing.

In TDM,there are more frames than slots.

A ________ provides telephone service to customers.

SONET-SDH applies ________ when there is a break in a trunk line between switches.

Which of the following is packet-switched?

In TDM,time is first divided into brief periods called ________.

In the United States,which of the following is a carrier?

Which of the following would a mail order company's customers prefer?

With WATS calls,the ________ pays and pays ________ per minute than direct distance dialing.

For PBXs,call transfer is ________.

For PBXs,nighttime calling is ________.

________ is widely used in Europe for PSTN signaling.

ICCs provide telephone transmission service ________.