 Data signaling rate

In telecommunication, data signaling rate (DSR), also known as gross bit rate, is the aggregate rate at which data pass a point in the transmission path of a data transmission system.
Notes:
 The DSR is usually expressed in bits per second.
 The data signaling rate is given by where m is the number of parallel channels, n_{i} is the number of significant conditions of the modulation in the ith channel, and T_{i} is the unit interval, expressed in seconds, for the ith channel.
 For serial transmission in a single channel, the DSR reduces to (1/T)log_{2}n; with a twocondition modulation, i. e. n = 2, the DSR is 1/T, according to Hartley's law.
 For parallel transmission with equal unit intervals and equal numbers of significant conditions on each channel, the DSR is (m/T)log_{2} n; in the case of a twocondition modulation, this reduces to m/T.
 The DSR may be expressed in bauds, in which case, the factor log_{2}n_{i} in the above summation formula should be deleted when calculating bauds.
 In synchronous binary signaling, the DSR in bits per second may be numerically the same as the modulation rate expressed in bauds. Signal processors, such as fourphase modems, cannot change the DSR, but the modulation rate depends on the line modulation scheme, in accordance with Note 4. For example, in a 2400 bit/s 4phase sending modem, the signaling rate is 2400 bit/s on the serial input side, but the modulation rate is only 1200 bauds on the 4phase output side.
Contents
Transmission Data Rate Terminology
Data Rate Abbreviation Lower Upper Extremely Low Data Rate ELDR 300 bit/s 3 kbit/s Very Low Data Rate VLDR 3 kbit/s 30 kbit/s Low Data Rate LDR 30 kbit/s 300 kbit/s Medium Data Rate MDR 300 kbit/s 3 Mbit/s High Data Rate HDR 3 Mbit/s 30 Mbit/s Very High Data Rate VHDR 30 Mbit/s 300 Mbit/s Ultra High Data Rate UHDR 300 Mbit/s 3 Gbit/s Super High Data Rate SHDR 3 Gbit/s 30 Gbit/s Extremely High Data Rate EHDR 30 Gbit/s 300 Gbit/s Based upon proposal from davisnetworks.com. 1 Mbit/s is defined as 1,000,000 bits per second signal data rate (OSI Layer 1).
Data Rate and Standard
Data Rate Standard 155 Mb/s OC3 622 Mb/s OC12 1063 Mb/s Fibre Channel 1250 Mb/s GbE 2125 Mb/s 2xFibre Channel 2488 Mb/s OC48 2500 Mb/s 2xGbE, infiniband 2666 Mb/s OC48(FEC) 3125 Mb/s 10 DbE LX4 4250 Mb/s 4xFibre Channel 9.953 Gb/s OC192 10.3125 Gb/s 10 GbE 10.51875 Gb/s 10 G Fibre Channel 10.664 Gb/s OC192 (FEC) 10.709 Gb/s OC192 (ITUT G.709) 11.100 Gb/s 10 GbE FEC 11.300 Gb/s 10 G Fibre Channel See also
 Bit rate
 Bandwidth (computing)
 Baud
 Line rate
 Maximum user signaling rate
 Transfer rate
References
This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C".
Categories: Data transmission
 Units of measure
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