[comp.society] Touch tone interfaces

BBUXEIPD@UIAMVS.BITNET (Robert Pearson) (08/23/88)

> During December of 1987, we started working in our Educational Computer
> Voice Mail  System.  Basically  this is a  Bulletin Board  System.  The
> difference is that instead of having to use a computer, all you need is
> a regular touch tone  phone.  This allows most of the  students to have
    ^^^^^^^
> Once the student proceeds, v.g. 6520 the host computer says:
>
>     "Enter your message after the tone and press the asterisk to
>      end"                                            ^^^^^^^^

Why is it that almost all of these 'neat' services require the two
'extra' touch tone keys?  ('#' and '*') As an end user, I have avoided
several of these services because it would require me to purchase
additional phone equipment.  I realize you cannot set these services up
to use pulse, but do you have to use the extra keys?  Many pulse/tone
switchable phones (mine included) only provide the ten basic digits.
From what I have seen, the only companies that limit themselves to the
ten basic keys are alternate long distance servers.  (I was a subscriber
to Teleconnect years befor equal access....)

To everyone who is developing 'touch tone' interfaces; PLEASE consider
your market and make the '#' and '*' keys OPTIONAL, if you use them at
all.

Robert

amossb@umbio.Miami.Edu (A.E. Mossberg) (08/24/88)

Robert, if manufacturers of switchable tone/pulse phones do not provide 
the '*' and '#' keys then you should be complaining to them.  Those keys 
all along were designed for use as special-function keys.  

For a dial-up service that accepts DTMF input, if you have input fields 
of unknown length it is very hard to implement without a delimiter that 
won't be confused as data.  (It can be done with a time-out, but then you 
might as well call a human)  

Also, some systems provide for alpha input, which is rather difficult 
without a method of desginating which of the 3 chars on a key you want.

aem