Hi
is any one familiar with the v series data modems who could help me out?
what does "bis" indicate in the naming convention? v.32 versus v.32bis?

thanx
momo

On 23 Sep 2004 06:23:41 -0700, momo_1234562000@yahoo.com.au (momo)
wrote:

http://www.freetranslation.com/ says that 'bis' is French for
'encore'.

V.32bis is a modification or enhancement to V.32.

Regards,
Allan

momo wrote:

In European music halls, you might hear "Bis!" instead of "Encore!".
In specs, it means updated, etymologically related to "two". I believe
the official translation of v.32bis is v.32(a).

Since older specs are rarely obsoleted, it effectively means expanded
or more encompassing (if you say "enhanced", I will be forced to sneer
again) in most cases.

Jerry
--
.... they proceeded on the sound principle that the magnitude of a lie
always contains a certain factor of credibility, ... and that therefor
.... they more easily fall victim to a big lie than to a little one ...
A. H.

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Allan Herriman wrote:

...

Aaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh! :-)

Jerry
--
.... they proceeded on the sound principle that the magnitude of a lie
always contains a certain factor of credibility, ... and that therefor
.... they more easily fall victim to a big lie than to a little one ...
A. H.

—————————————————————————————————————————————————— —————————————————————

On Thu, 23 Sep 2004 11:05:27 -0400, Jerry Avins <jya@ieee.org> wrote:


I may have been right in this particular case though.

V.32
A family of 2-wire, duplex modems operating at data signalling rates
of up to 9600 bit/s for use on the general switched telephone network
and on leased telephone-type circuits

V.32bis
.... up to 14 400 bit/s ...

Regards,
Allan

Allan Herriman wrote:

From The Century Dictionary:

Enhance
1. To raise up; lift up; elevate.
2. To lift up to a higher degree; increase to a higher point; carry
upward or to a greater extent; heighten; make greater, as prices
or one's reputation or dignity ...

It doesn't mean improved or enlarged, and it's a stretch to read "more
encompassing" into it. Note that it properly refers to a price increase.
So yes, it may have been right in this case. Can one un-scream?

Jerry
--
.... they proceeded on the sound principle that the magnitude of a lie
always contains a certain factor of credibility, ... and that therefor
.... they more easily fall victim to a big lie than to a little one ...
A. H.

—————————————————————————————————————————————————— —————————————————————

Allan Herriman wrote:

second version of the spec. There are some specs with later editions,
where the name reflects that. For example, the version of V.27 used in
FAX machines in V.27ter - the third version. The ITU can be a little
wacky with its numbering, though. Some specs have been completely
renumbered. G.726 is what used to be G.723, and G.723.1 is now something
completely different.

Regards,
Steve

Allan Herriman wrote:

I thought "encore" was french.

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momo wrote:

It usually refers to an enhanced specification. The next enhancement of
the spec would be (IIRC) "v.32ter".


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James Knott wrote:
encore - 1712, from Fr. encore "still, yet, again," probably from V.L.
phrase [hinc ad horam] "from then to this hour."

from
"The Online Etymology Dictionary"
http://www.etymonline.com/e3etym.htm

James Knott wrote:

Bis is second; ter, third. "Encore" is literally "more". Idioms and
prepositions don't translate. Bant on-line translations for bis and ter
are "(a)" and "for the third time".

Jerry
--
.... they proceeded on the sound principle that the magnitude of a lie
always contains a certain factor of credibility, ... and that therefor
.... they more easily fall victim to a big lie than to a little one ...
A. H.
—————————————————————————————————————————————————— —————————————————————

Allan Herriman wrote:

bis
\Bis\, adv. [L. bis twice, for duis, fr. root of duo two. See Two, and
cf. Bi-.] Twice; -- a word showing that something is, or is to be,
repeated; as a passage of music, or an item in accounts.
Source: Webster's Revised Unabridged Dictionary, (c) 1996, 1998 MICRA,
Inc.

Hi thanks for the explanations.
I got that.
Now I have got some more questions
Does a bis or ter rec replace the previous version? is it mandatory?
and:
V.29 is built on most of the analog modems you can buy these days.
the ITU recommendation says that it is a Standard for 4 wire leased
lines! how does that go together?

Thanks Momo

momo wrote:

A specification is almost never replaced. The old one may be disallowed
for new manufacture, but even that is rare. The specification for a 1200
Baud modem is still just that, but later ones, while compatible with it,
go to higher rates.

Jerry
--
.... they proceeded on the sound principle that the magnitude of a lie
always contains a certain factor of credibility, ... and that therefor
.... they more easily fall victim to a big lie than to a little one ...
A. H.
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momo wrote:

I don't believe there's any requirement for a manufacturer to use only the
latest spec. There is still plenty of recent equipment, that runs at only
300 or 1200 b/s.

That's a whole different series. Telephone system modems are divided into
two main groups, 2 wire and 4 wire. The modems used on most dial up phone
systems are 2 wire, though I have seen 4 wire dial up modems. Modems used
on leased lines are generally 4 wire. At one time, 4 wire modems were
often faster than 2 wire modems, because they could use the entire
bandwidth of the voice channel in each direction, whereas a 2 wire modem
had to divide the bandwidth, between the two direections. However, with
modern technology, that's no longer the concern it used to be.

BTW, it's not polite to e-mail a response that should be posted only in the
newsgroup. E-mail replies should only be used, when the discussion no
longer belongs in the newsgroup, because it's way off topic or contains
personal info.

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