[comp.misc] what makes a fax mach

bradley_grigor@canrem.uucp (bradley grigor) (12/20/90)

  On 12-12-90 at 12:47pm, Ajay Shah wrote to All:

AS>If the telephone company does, indeed, endow every line with
AS>bandwidth enough to support 9.6kb, then does it mean we can just
AS>plug in a 9.6kb modem into a vanilla telephone line and start
AS>using a terminal??

In a word, YES!


...bag     bradley.grigor@canremote.uucp      Newmarket, Ontario, Canada
           PCRelay public key: 7596           12-20-90  at 1:15am
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dbell@cup.portal.com (David J Bell) (12/22/90)

>bradley.grigor@canremote.uucp      Newmarket, Ontario, Canada

>AS>If the telephone company does, indeed, endow every line with
>AS>bandwidth enough to support 9.6kb, then does it mean we can just
>AS>plug in a 9.6kb modem into a vanilla telephone line and start
>AS>using a terminal??

>In a word, YES!

Ummm, with reservations, perhaps. Aren't fax modems (nearly)
half-duplex? That is, they transmit at full 9600 bps in one
direction, but only receive low-bandwidth data in return.
Basically like the old Bell 202 modems, back when 1200 bps was
pushing the envelope.

Dave      dbell@cup.portal.com

bradley_grigor@canrem.uucp (bradley grigor) (12/24/90)

  On 12-22-90 at 9:27am, David J Bell wrote to All:

DJ>z    Subject: Re: what makes a fax mach

>AS>If the telephone company does, indeed, endow every line with
>AS>bandwidth enough to support 9.6kb, then does it mean we can just
>AS>plug in a 9.6kb modem into a vanilla telephone line and start
>AS>using a terminal??

>In a word, YES!

DJ>Ummm, with reservations, perhaps. Aren't fax modems (nearly)
DJ>half-duplex? That is, they transmit at full 9600 bps in one
DJ>direction, but only receive low-bandwidth data in return.
DJ>Basically like the old Bell 202 modems, back when 1200 bps was
DJ>pushing the envelope.

I read the question as referring to modems in general.  And a
V.32 modem can operate in full duplex at 9600 bps on standard
switched telephone lines.  These modems became widely available
after 1986, many BBSes provide support for them and more and more
people I correspond with have them.  BYTE Magazine (November
1990) had an article on modem standards.


...bag     bradley.grigor#canremote.uucp      Newmarket, Ontario, Canada
           PCRelay public key: 7596           12-24-90  at 12:34am
---
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