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6 Callback Security
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string, and press ENTER. The phone number must be preceded by
DT, for tone dialing, or DP, for pulse dialing. The dialing string can
also include other AT commands. Example: AT&Z0=+-
ATM0DT5551212. Up to 35 characters can be used. The +, -, and
??? characters are optional:
+ Number entry. Add if you want a mobile caller to be able to
enter his current phone number for callback.
- Direct connection. Add if you want a caller to be able to
choose to connect directly without being called back.
,??? Extension entry. Must be used with the + command. Add if
you want a caller to be able to enter an extension number for
callback. The number of ? characters should equal the num-
ber of digits in the extension.
8. To store a callback phone number in the second memory location,
type AT&Z1=[+][-]AT
xxxxxxxx
[
,
???], where
xxxxxxxx
is the dialing
string, and press ENTER. Note that the memory location number in
the command is incremented by one.
9. Repeat as many times as necessary, through memory location 29,
until all dialing strings have been entered.
10. To review your entries, type AT&V and press ENTER.