-=> Quoting Herbert Graf to Robert Osborne <=-
 HG> No, baud and bps are two seperate things. For example, a 14.4
 HG> modem uses a baud of I beleive 1400 and encodes 10 bits per baud,
 HG> giving the 14.4 kbps.

"Baud" is defined as the number of information packets that can be
transferred over a medium.  The current synonym used by the ITU
is "symbols per second."  For example, earlier (Strowger dated)
telephone circuits we struggled with has a traditional capacity of
about 2600 baud for speech.  Up through V32bis, data transmission
was limited to 2400 baud, with multiple bits encoded in each symbol.
When V34 was being developed, field studies by the now-merged Codex and
BELLcore found that the actual bandwidth available for use today had been
extended from the old 300-3000 to 200-3700Hz.  V34 attempts to take
advantage of the extra bandwidth when it's there by using symbol rates
above 2400, and also by shifting carrier frequency.
Here's a table of modulation types and the respective baud rates:
103, V.21:     0-450 baud, 1 bit per symbol.  Half-duplex to 600 baud
212, V.22:     600 baud, 2 bits per symbol.
V22bis:        600 baud, 4 bits per symbol.
V32 4k8:       2400 baud, 2 or 3 bits per symbol (trellis off, on)
V32bis 7k2:    2400 baud, 4 bits per symbol (trellis)
V32 9k6:       2400 baud, 4 or 5 bits per symbol (trellis off, on)
V32bis 12k0:   2400 baud, 6 bits per symbol (trellis)
V32bis 14k4:   2400 baud, 7 bits per symbol (trellis)
V34 has a menu of symbol rates and signalling patterns, which implement
"fractional bit encoding" to adjust the size of the eye-pattern
constellation to fit the available bandwidth.
Do wish MickeySoft and others tho would drop the term
baud.  It's used wrongly in too many places that do know better...
rgdZ
Richard
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