[vcf-midatlantic] Minimum requirements for receiving 56K modem connections

[John Heritage]

Thanks!

I was reading this reddit thread earlier, and was having a little trouble
following, so I wrote below to verify what I took away.

(Thanks again)

On Sun, Jun 30, 2024 at 15:43 David Ryskalczyk <d235j.1 at gmail.com> wrote:

> There is a good writeup of what you’ll be facing here:
>
>
> https://old.reddit.com/r/retrobattlestations/comments/t5m6od/56k_upgrade_to_the_inhome_isp/
> <https://www.reddit.com/r/retrobattlestations/comments/t5m6od/56k_upgrade_to_the_inhome_isp/>
>
> David
>
> On Jun 30, 2024, at 3:01 PM, John Heritage via vcf-midatlantic <
> vcf-midatlantic at lists.vcfed.org> wrote:
>
> Hi folks!
>
>
>
> I'm messing around with a bunch of modems at home, and would like to know
> what's required to set up one system to receive 56K calls from another
> system.
>
> I'm able to get 33.6kbps bi-directionally (or 31.2K) with just a phone line
> between the two modems, and using ATX1D and ATA commands.
>
> I think to get 56K I require some equipment to simulate a digital
> connection, and I'm also not sure if a 56K analog modem can even receive
> 56K calls.  Is this true?
>
> Modems I have on hand:
> - a USRobotics Courier I-Modem
> - 2 x USRobotics V.Everything, and a USRobotics 56K/X2 Sportster external
> modem
>
> I am also unable to get the I-Modem to connect to any of the analog modems,
> and although it does have the protocols to support analog, it seems like
> it's expecting a BRI / ISDN connection to allow that connection.   Is this
> true?
>
> If the above are true - what's the minimum / cheapest solution for being
> able to at least establish a V.90 connection given the equipment I have
> already?
>
> Thanks for your help!
> John
>
>