25 Mar
2007
25 Mar
'07
7:30 p.m.
Chuck Guzis wrote:
>As I understand it, that's not the way 56K
works--you can hook two
>56K modems back-to-back on your workbench and they won't do 56K. As
>I understand it, on end has to interface to a digital phone line.
>One A/D conversion allowed. Hence, the line from you to your ISP is
>not "striclty" analog.
To which John replied...
It says you can't have more than one. It
didn't say
that one was necessary. That web page dates from late 1996
or early 1997, too.
Chuck is absolutely correct. One end MUST be a digital connection. For 56K,
on the ISP end, the line must be ISDN, PRI, etc. Regular analog POTS line
won't work on the ISP end. In ADDITION, there can't be more than one analog
to digital transition anywhere in the circuit from source to destination.
Bridge clips will also invalidate 56K connections on POTS lines.
Jay