'*' and '#' have no pulse analogues.
However, in the states at least, the
equivalent to dialing a dial access code preceded by a star or pound is
generally achieved by rotary dialing '11' before the code (ie. *69 would
Fortunately in the UK there are no requirements yet (afaik) for * and #
on the public networks. On the private exchange at work, 11=*, 12=#,
13=** and 14=##, at the beginnings of numbers only, but I don't know
whether it still works.
BTW, in the UK # is _never_ called "pound". "Hash" is the most usual
name, followed by "gate" and "hatch". "Pound" means a
script L with a
couple of horizontal bars through it :-)
As for trying to communicate with auto-attendants,
you'll probably have to
add external buttons to your rotary phone to give you the capability of
dialing '*' and '#'.
That's what I was afraid of. Although a neater hack still would be a
modified dial that did 11 pulses for * and 12 for #. Mechanically
possible, but I wouldn't want to try and modify the old dial.
There is a blanked-off hole in most type 746 phones that can accommodate
1 or 2 buttons, and I was thinking of putting # and * there, but this is
more usually used for a "recall" button.
Incidentally, does anyone know why "timed break" recall buttons are
replacing local earth ones? And how long is the break?
While a pulse-to-DTMF converter is a neat hack (and
these sort of
converters were installed in some step-by-step exchanges in the US, at
least there were in my local exchange when we were step-by-step, but come
to think of it I don't know why, unless they were converting my pulse
dialed digits to DTMF so that some other adjunct piece of equipment such
as a Dialed Number Recorder could know what digits I was dialing, for
purposes of surveillance ;) it'd be easier to just buy a cheap DTMF phone.
Sam, you should be ashamed of yourself. The object of the exercise was
not to get a DTMF phone, but to get one with a _rotary dial_. I already
have a DTMF phone, and I am interested in thes project _purely_ for hack
Slightly less far off topic, does anyone know the reason for the
divergence in layout between phone keypads and computer ones, i.e.
456 vs. 456 ?
Which came first?