Setting Callback Security Message Parity
The modem's password prompt and messages parity must match the parity of the computer to which the modem is connected.
1.
Open a data communications program such as HyperTerminal.
2.
In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxx is your password. Press E
with OK if the setup password is correct and ERROR if it is wrong.
3.
The modem's parity default value is No parity (AT#CBP0). To change the modem's default to use even parity, type
AT#CBP2. Press E
4.
To store the new parity value, type AT&W. Press E
Assigning Callback Passwords and Phone Numbers
1.
Open a data communications program such as HyperTerminal.
2.
In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxx is your password. Press E
with OK if the setup password is correct and ERROR if it is wrong.
3.
Enable callback security by typing AT#CBS1 or AT#CBS2 and pressing E
4.
To store a callback password for the first callback memory location, type AT#CBN0=xxxxxxxx, where xxxxxxxx is
the first password. Press E
not contain a + or - character.
5.
To store a callback password for the second callback memory location, type AT#CBN1=xxxxxxxx, where xxxxxxxx is
the second password. Press E
6.
Repeat as many times as necessary, up to memory location 29, until all passwords are entered.
7.
To store a callback phone number in the first memory location, type AT&Z0=[+][-]ATxxxxxxxx[,???], where xxxxxxxx
is the dialing string. Press E
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. Enables a mobile caller to enter his current phone number for callback.
Direct connection. Enables a caller to choose direct connection without being called back.
-
,??? Extension entry. Must be used with the + command. Enables a caller to enter an extension number for
callback. The number of ? characters must 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 E
incremented by one.
9.
Repeat, through memory location 29, until all dialing strings are entered.
10. To review your entries, type AT&V and press E
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.
Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387D)
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. For odd parity, type AT#CBP1. Press E
NTER
. The password must be unique, must be six to eight characters in length, and must
NTER
. Note that the memory location number in the command is incremented by one.
NTER
. The phone number must be preceded by DT for tone dialing or DP for pulse dialing.
NTER
. Note that the memory location number in the command is
NTER
NTER
.
NTER
.
NTER
.
NTER
.
Chapter 5 – Callback Security
. The modem responds
NTER
. The modem responds
NTER
15
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