The number of successful block transfers during a performance measurement period divided by the duration of the period.

The average value of the duration of a successful block transfer attempt.
Note: A block transfer attempt is successful if (a) the transmitted block is delivered to the intended destination user within the maximum allowable performance period and (b) the contents of the delivered block are correct.

The expected block-error ratio.

1. The ratio of the number of incorrectly received blocks to the total number of blocks transferred.
Note: The block-error ratio is calculated using empirical measurements. Multiple block-error ratios may be used to predict block-error probability.
2. The ratio of the number of blocks that contain at least one bit in error to the total number of blocks transmitted in… (Read More →)

The ratio of the number of lost blocks to the total number of block transfer attempts during a specified period.

The ratio of the number of misdelivered blocks to the total number of block transfer attempts during a specified period.

A blocked call is said to have occurred when a call presented to a telecommunications Service Provider (SP) facility cannot be completed due to Blocking.

1. The formatting of data into blocks for purposes of transmission, storage, checking, or other functions.
2. Denying access to, or use of, a facility, system, or component.
3. The failure of a telecommunications network to meet a user service demand, because of the lack of an available communications path.

In telephone traffic engineering, a criterion that specifies the maximum number of calls or service demands that fail to receive immediate service.
Note: The blocking criterion is usually expressed in probabilistic notation, such as P.001.

The number of records in a block.
Note: The blocking factor is calculated by dividing the block length by the length of each record contained in the block. If the records are not of the same length, the average record length may be used to compute the blocking factor. Synonym grouping factor.