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Flashcards in Traffic Engineering Deck (15):
1

A concept or method of transmission planning that permits a relatively close approach to an overall zero transmission loss in the telephone network and maintaining singing and echo within specified limits

Via Net Loss

2

A discrete engagement or occupation of a traffic path

Call

3

The continuous one-hour period that, on consecutive days in the busy part of the year, contains the maximum average traffic intensity

Busy Hour

4

The inability to interconnect an idle inlet to an inlet outlet because all possible paths between them are already in use

Internal Blocking

5

The average number of calls during the busy hour

Calling Rate

6

The traffic intensity per traffic path. 100% occupancy implies all paths are busy

Occupancy

7

The international dimensionless unit of traffic intensity

Erlang

8

1 EBHC is the average intensity in one or more traffic paths occupied in the busy-hour by a two-minute call or an aggregate duration of two minutes

1/30 of an Erlang

Equated Busy-Hour Call (EBHC)

9

A unit of traffic intensity equal to 1/36 of an erlang

Century call-second per hour (CCS)

10

1 Cm is the quantity represented by one or more calls having an aggregate duration of 1 minute

Call-minute

11

The traffic intensity that would occur if all traffic submitted to a group of circuits could be processed

Offered Traffic (To)

12

The actual traffic intensity handled by the group of circuits

Carrier Traffic (Tc)

13

That portion of traffic that cannot be processed by the group of circuits

Lost Traffic (TL)

14

The proportion of a time a circuit is busy, or average proportion of time each circuit in a group in busy

Circuit Utilization (ρ)

15

A measure of probability that, during a specified period of peak traffic, a call offered to a group of trunks of circuits will fail to find an idle circuit at the first attempt

Grade of Service (GoS)