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Dial Up Solutions
- Subject: Dial Up Solutions
- From: list at satchell.net (Stephen Satchell)
- Date: Sun, 18 Oct 2015 17:21:46 -0700
- In-reply-to: <[email protected]>
- References: <479412241-1445131905-cardhu_decombobulator_blackberry.rim.net-892650478-@b13.c3.bise6.blackberry> <[email protected]> <[email protected]>
On 10/18/2015 03:38 PM, Aaron Hopkins wrote:
> It appears to be limited to 14.4k due to patent issues and handles faxes
> only, but its existence suggests writing a software-only data modem should
> be possible.
That's exactly what WinModems were, back in the day. The board was
nothing more than a DAA, a codec, and an ASIC to transmit and receive
the raw data. For V.34, the software required about 60 MHz of clock;
for V.32 bis the load was closer to 24 MHz.