linux 56k modems: DGC vs ACM

[Man-wai Chang to The Door (24000bps)]

What are their differences? Are they the same thing?

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[J G Miller]

What are their differences?

What are the differences between what?

Are they the same thing?

Are what the same thing?

 

[VanguardLH]

Asking a question in a subject line without also repeating it in
the body of the post is considered bad form because many people
don't read the subject lines and the subject lines rarely have
anything to do with what is actually being discussed.

Personally I would think that if he wanted other users to understand his
question that he would have provided examples of the types of analog modems
he was asking about. Those acronyms have multiple meanings. I can guess at
which ones might be associated with analog modems but that tells me about a
group related to specifications or a manufacturer's name but that says
nothing about what protocols or specifications might differentiate them.

 

[Man-wai Chang to The Door (24000bps)]

Personally I would think that if he wanted other users to understand his

question that he would have provided examples of the types of analog modems
he was asking about. Those acronyms have multiple meanings. I can guess at
which ones might be associated with analog modems but that tells me about a
group related to specifications or a manufacturer's name but that says
nothing about what protocols or specifications might differentiate them.

Maybe it's more a hardware question than a Linux one. SOrry then.

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@~@ Might, Courage, Vision, SINCERITY.
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[J G Miller]

Maybe it's more a hardware question than a Linux one. SOrry then.

It is obviously a hardware related issue but it has implications for
Linux.

In the question which you failed to include in the body of the message,
which you have repeatedly been told to include when posting a question,
you did not indicate whether you were interested in the hardware or
software implications.

Is your web browswer still broken?

A web search using the appropriate terms reveals that one has to load
different kernel modules for either an ACM modem or a DGC modem.

If you really need a modem to work (and work reliably) under GNU/Linux
or under other OSs, get a US Robotics Courier V.everything serial modem,
and you will save yourself a lot of hassle.

 

[Man-wai Chang to The Door (24000bps)]

A web search using the appropriate terms reveals that one has to load

different kernel modules for either an ACM modem or a DGC modem.

I knew that. Thanks!

If you really need a modem to work (and work reliably) under GNU/Linux
or under other OSs, get a US Robotics Courier V.everything serial modem,
and you will save yourself a lot of hassle.

I bought US Robotics 5610C PCI modem & 5637 USB modem from USA via my
cousin. The price (including shipping) is very very expensive. 5637 is a
ACM modem, and Ubuntu 9.10 has built-in driver.

I just noticed that ZOOM 3095 might work in Ubuntu 9.10 as well, but it
uses DGC driver. ZOOM has local distributor, and ZOOM 3095 is about the
same price as USR 5637.

That's why I asked about the DGC vs ACM thing.

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@~@ Might, Courage, Vision, SINCERITY.
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[Man-wai Chang to The Door (33600bps)]

But, using GOOGLE, from hits for the Linux world "DCG" = Digital Modem

and "ACM" = Acoustic/Analog Modem. This is VERY loose meaning. I note
that may hits refer to "USB CDC ACM" and/or Cellphones.
With these caveats, there is a difference. Digital vs Analog.

But the phone line is still the good old phone line. What's this digital
vs analog about then, other than the price of the chip involved?

--
@~@ Might, Courage, Vision, SINCERITY.
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[Jon Danniken]

As many have replied "DCG" vs "ACM" Modem MAY have different meaning
depending on context.

But, using GOOGLE, from hits for the Linux world "DCG" = Digital Modem
and "ACM" = Acoustic/Analog Modem. This is VERY loose meaning. I note
that may hits refer to "USB CDC ACM" and/or Cellphones.

With these caveats, there is a difference. Digital vs Analog.

I always wnte an acoustically coupled modem, but I was too young at the time
to justify one (or the computer it hooked up to).

Drats.

Jon