Exam 9: Digital Circuit Switch

The central premise used by mathematicians when developing traffic formulas is that callers are ________.

Class 2 and class 1 switches are still very much a part of the switching hierarchy.

Average hold time is one of the hardest values to predict, due in part to the ________ revolution.

Telecommunications traffic engineers are responsible for determining all of the following except:

Which of the following is a factor contributing to call blockage?

The class 3 switch switches trunks between:

Global call processing, network control, signaling control, maintenance, and administration are among the responsibilities of the:

________ calls are calls that travel between two subscribers served out of the same central office switch.

The difference between the Poisson and Erlang traffic models is how they expect callers to behave when they hear a fast busy signal.

P.01, the term used to define a 99% non-blocking rate for a switch, has to do with grade of ________.

System recovery, software upgrades, storage of global routing information, distribution of information to all subsystems, and billing are among the responsibilities of the:

When you pick up your telephone and dial a friend who lives across the country, your call will be routed through one or more ________ switches, which are the interface between networks and between switches.

Discuss the process of "connecting the dots"in traffic engineering.

________ trunks are used to connect two long distance switches (one-way or two-way) incoming or outgoing.

Traffic models have been built around the phenomenon that every subscriber is likely to go off-hook on most holidays, during national disasters, and on Sunday afternoons.

The class 3 toll switch and the tandem class 4 switch are very similar in physical structure except with regard to the software.

When you pick up your telephone and hear the dial tone, you are interfacing with a class 2 switch.

Operator services trunks are only used when customers dial a specific code, 411 for directory assistance, or 0.

Which of the following is not a way of defining the trunk?

A primary ________ carrier is a long distance carrier chosen by the subscriber.