The maximum goodput (for example, the file transfer rate) may be even lower due to higher layer protocol overhead and data packet retransmissions caused by line noise or interference such as crosstalk, or lost packets in congested intermediate network nodes. Most of the listed rates are theoretical maximum throughput measures in practice, the actual effective throughput is almost inevitably lower in proportion to the load from other devices ( network/ bus contention), physical or temporal distances, and other overhead in data link layer protocols etc. 3.3.2 Broadband (hundreds of kHz to GHz wide)įactors limiting actual performance, criteria for real decisions.3.2 Teletypewriter (TTY) or telecommunications device for the deaf (TDD).1 Factors limiting actual performance, criteria for real decisions.
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