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CHAPTER 7: Callback Security
6. Repeat as many times as necessary, up to memory location 29, until all
passwords have been entered.
7. To store a callback phone number in the first memory location, type
AT&Z0=[+][-]ATxxxxxxxx[,???]
, where xxxxxxxx is the dialing 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 number of digits in the extension.
8. To store a callback phone number in the second memory location, type
AT&Z1=[+][-]ATxxxxxxxx[,???]
, 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.
NOTE
A form is provided on the last page of this chapter to help you plan or
keep track of password and phone number assignments.
7.2 Calling Procedures
Use the following procedures to call a modem that has callback security enabled.
NOTE
Autoanswer must be enabled on the calling modem (S0=1).
7.2.1 P
ASSWORD
-O
NLY
C
ALLBACK
Use this procedure when calling from a fixed location.
