Transmission Level Point

In a telecommunications system, a transmission level point (TLP) is a test point or interface, i.e. a physical point in an electronic circuit where a test signal may be inserted or measured, and for which the nominal power of the test signal is specified.

A zero dBm transmission level point (or synonym zero transmission level point) is a transmission level point where the nominal test signal power is 0dBm.

In practice, the abbreviation TLP is usually used, and it is modified by the nominal level for the point in question. For example, where the nominal level is 0 dBm, the expression 0 dBm TLP, or simply, 0TLP, is used. Where the nominal level is −16 dBm, the expression −16 dBm TLP, or −16TLP, is used.

The nominal transmission level at a specified TLP is a function of system design and is an expression of the design gain or loss.

Voice-channel transmission levels, i.e. TLPs, are usually specified for a frequency of approximately 1,000 Hz.

The TLP at a point at which an end instrument, e.g. a telephone set, is connected is usually specified as 0 dBm.

Famous quotes containing the words level and/or point:

    It is the American vice, the democratic disease which expresses its tyranny by reducing everything unique to the level of the herd.
    Henry Miller (1891–1980)

    Our culture still holds mothers almost exclusively responsible when things go wrong with the kids. Sensing this ultimate accountability, women are understandably reluctant to give up control or veto power. If the finger of blame was eventually going to point in your direction, wouldn’t you be?
    Ron Taffel (20th century)