[comp.dcom.telecom] GTE Airfone Doesn't Transmit In-Band DTMF?

bapat@uunet.uu.net (Subodh Bapat) (03/10/91)

Has anyone been able to successfully send tones from a keypad of a GTE
Airfone? On a recent flight, I tried to use the Airfone to access my
voice mail system at work. There was no problem getting the
connection, which, by the way, was exceptionally clear. But when I
tried to navigate down the menu structure of the voice mail system
using keypad buttons, no tones were sent out at all (in spite of
feverishly punching buttons hard enough to attract the stwardesses'
attention!)  and my voice mail system, receiving no input, hung up on
me after a few warnings.

Why is GTE unable to send DTMF in-band during the correction, when it
is obviously able to send it at call set up time? (You can actually
hear the tones go when your credit card is authenticated and your
number dialed.)

To GTE's credit, the operator arranged credit for the call
immediately.  I couldn't reach the operator during the flight, I had
to call her after descending unto terra firma on a ground line.

Is an Airfone considered a COCOT? I wonder what would happen if one
called 911 during a particularly turbulent flight :-).


Subodh Bapat   bapat@rm1.uu.net     OR           ...uunet!rm1!bapat
               Racal-Milgo, Ft Lauderdale