Motorola MicroTAC Owner's Manual page 45

Special System Features
NOTE Your phone is designed with a "shortcut" method
for dialing the PIN Code number. Simply store your PIN
Code number (supplied by your Cellular Service Provider)
in memory location 07 (as described in "Storing a Phone
Number" on page 12). Then, you may simply press
SND
after hearing the system prompt (for example, some
systems use a double tone) when placing calls; your phone
will automatically send the PIN Code number stored in
memory location 07. Using this shortcut method, you will
not have to enter your PIN Code number each time you
place a call.
A maximum of 7 digits are allowed. (Remember – Do not
store any other number in memory location 07 once you
have stored your PIN number.)
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