🚀 go-pugleaf

In article: <694882035wnr@naismith.demon.co.uk>  John Naismith 
<John@naismith.demon.co.uk> writes:
> 
> A colleague at work has the following problem :
> 
> He has a "no-name" (or at least very obscure) modem, configured as COM3, IRQ5 
> (I know, I know) which won't hang up when he uses "comit" (?). I've never used 
> the s/w package before, hence the question. Anybody experienced similar?
> 
> To be honest it sounds more like a duff initialisation string to me, but I'm 
> loath to go to *yet another* person's house to sort out their machine. 
> 
> TIA


3 methods I know for dropping the call which are fairly common to most modems:
  
i) configure the modem with  AT&D2  either in the init-string in the software, or 
save into the power-on default (NVRAM) settings by using AT&W to save current 
settings.  The modem cable must be cabled for DTR (Data Terminal Ready  pin-20 on 
25 way D-type or pin-4 on 9 way D-type)  and DTR must be held high for modem to 
dial/answer;  the modem should hangup whenever the software drops DTR, even if for 
a couple of seconds.
  
ii) issuing the command  ATH0 (or just ATH) while online should hangup, to get to 
the modem's command prompt it is usual to type  +++   (3 plus's) with no other 
characters sent for a second (or 2 ?) either before of immediately after.  The 
modem should respond with it's usual OK prompt at which the ATH0 can be typed.  
Usually this can also be set up in the 'hangup string' or something similar in the 
software.
  
iii)  I guess that the modem is internal - because switching off the modem is the 
fastest and surest way of dropping the call - but not recommended since it can 
cause problems at the 'other end' on some systems.
 
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