[unix-pc.general] Extra 3B1 Phone features?

km@mathcs.emory.edu (Ken Mandelberg) (03/13/90)

Has anyone patched the 3B1 phone manager, or written a standalone
phone program that allows:

1) speaker toggle : Toggles the speaker on or off for a voice
   call in progress. Sort of half of a speaker phone, good if
   you get put on hold.

2) demon dialing: Redials a busy number until it answers.
-- 
Ken Mandelberg      | km@mathcs.emory.edu          PREFERRED
Emory University    | {decvax,gatech}!emory!km     UUCP 
Dept of Math and CS | km@emory.bitnet              NON-DOMAIN BITNET  
Atlanta, GA 30322   | Phone: (404) 727-7963

rlw@ttardis.UUCP (Ron Wilson) (03/14/90)

In article <5131@emory.mathcs.emory.edu>, km@mathcs.emory.edu (Ken Mandelberg) writes:
>phone program that allows:
>
>2) demon dialing: Redials a busy number until it answers.
>-- 
>Ken Mandelberg      | km@mathcs.emory.edu          PREFERRED

Demon dialing isn't really practical on the UNIX-PC internal dialer: the
internal dialer does NOT have busy detect - you end up listening to 30 secs
of the busy signal, then it times out (it assumes that you have picked up the
handset by then, and releases the line) - in theory, a program could check if
the handset was "off hook" when the dial(3) (or ioctl(2)) function returns
after dialing: if the handset was still "on hook," the program could redial.

But, as I said, the dialer doesn't have a busy tone detector, so it would
keep your phone line busy for 30 second intervals at whatever time period
you were retrying the number.