Following up a message from LAIRD KELLY to DAVID HAYS:
DH> DH> I run FD 2.12.  My SupraFaxModem 28.8 external with the upgraded
DH> DH> datapump and the -22 ROM version has started to act weird.  Often,
DH> DH> when the modem dials out and gets a busy signal it won't drop
DH> DH> carrier.  The 'OH' light on the modem display goes off the line
DH> DH> remains open.  Manually sending the onhook command doesn't work
I use the -18 code and experienced similar problems with a few differences: 
the modem would report that the phone is on-hook and the OK would display, 
but the line would still be physically off-hook!   I would kow this because 
the Bell lady recording would come on, then the loud "off-hook" warning tones 
from Bell would occur.
DH>When my SupraFaxModem 28.8 is hooked up to my BBS line, it will not
DH>disconnect the line when either dropping DTR or sending the ATH0 string.
DH>The SupraSonic worked fine.  The SupraFaxModem failed to disconnect
DH>the line
DH>on every test with the BBS line, and did just fine on the voice line.  I
DH>tested it using both comm ports to make sure it wasn't a port related
DH>problem.
 LK> I don't know whether the SupraFaxModem 28.8 has a solid-state relay
 LK> or a reed relay but it sounds like it is failing due to excessive
 LK> line current (reed relays are prone to "stick" when the reeds
 LK> become magnetised due to excessive current and semi-conductor
 LK> junctions "breakdown" (and may eventually melt causing a
 LK> short-circuit) if subjected to excessive current)
I am not sure why this is happening, but the problem seems to correct itself 
after a few minutes.  But there is no other indication that there is a 
problem unless one actually lifts the phone that is physically connected to 
the modem's phone jack.  Therefore..  this problem may be happening to more 
28.8k owners than they realize.
  ...AA 
 
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