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S30
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1994-01-17
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12-20-93 Inactivity Timer
The S30 register controls how long the modem will wait for data
passing through. You set S30= in 10 second increments (6 = 60 seconds, 1
Min). I have tested it, AT&F&C1&D2 (init) then ATS30=3 and it disconnected
30 seconds after the last data I typed (on either computer, caller or
called). Only one modem was set to S30=3.
If thise doesn't work, there may be enough line noise so the modem
sees the line noise as data.
It can make a big difference whether you call out or someone calls
in to you. Also there is a difference between calling different areas (area
codes or exchanges) as different equipment will be involved. Calling the
phone company will rarely do any good, because the problem is not on your
line.
However, because the problem is not rare, (in fact common in some
places), operators of BBS and other modem users have come up with a cheap
simple solution which works most of the time.
You can make (or have made) a 'noise filter'. The modem doing the
rec'ving must be the one with the filter. Parts are less than $2.50. You
plug into the modem with a "T" adapter (about $2.50 at Radio Shack) will
let you put the 'filter' on and still use the phone in that jack. (I have
never seen a 'noise filter' for sale. The only device I ever saw that
claimed to stop noise, cost more than $45 and did nothing at all).
##include=c:\text\noise2.tif
Don Hinds - Zoom Tech
##include=c:\text\signa.tif