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User Guide To Change the Setup Password 1. Open a data communications program such as HyperTerminal. 2. In the terminal window, type AT#SMTSMODEM (or AT#Sxxxxxxxx if you have replaced the MTSMODEM password with xxxxxxxx) and press ENTER. The modem responds with OK if the setup password is correct, and ERROR if it is wrong. 3. To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the password, and press ENTER. The password can include any keyboard character, and can be up to eight characters long. The modem responds with OK. 4. The new password is saved automatically. You can now either enter more AT commands or exit the data communications program. The next time you wish to set up the modem you must use the new password. Note: Passwords are case sensitive. The next time you enter the password, it must be in the same case as you set it up. To Turn Callback Security On and Off Callback security must be turned on to enter many callback security commands. 1. Open a data communications program such as HyperTerminal. 2. In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxxis your password, and press ENTER. The modem responds with OK if the setup password is correct, and ERROR if it is wrong. 3. Type one of the following commands: 6 Callback Security • To turn off callback security, type AT#CBS0 and press ENTER. Callers no longer need a password to connect to the modem, the modem is unable to call them back, and the stored dialing command locations 0–3 become available. • To turn on both local and remote callback security, type AT#CBS1 and press ENTER. With local security turned on, you must enter the setup password before you can enter any AT command except the AT, ATIn, and AT#Sxxxxxxxx commands. For a description of remote callback security, see the following paragraph. • To turn on remote callback security only, type AT#CBS2 and press ENTER. With remote callback security turned on, each caller is asked to enter a password, is called back, and then is asked to enter the password again before a connection can be made. Also, dialing command locations 0–3, for use with the DS=y dialing command, are replaced by callback dialing command locations 0–29. • To temporarily disable callback security if the modem is set to #CBS1 or #CBS2 (for instance, to call another modem), type AT#CBS3 and press ENTER. The modem returns to its original setting when you issue the hangup command (+++ATH ) or the modem is reset. Note that if a remote modem breaks the connection, callback security remains disabled. To Set the Parity of the Callback Security Messages The parity of the modem’s password prompt and messages must match the parity of the computer the modem is connected to. 1. Open a data communications program such as HyperTerminal. User Guide 2. In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxxis your password, and press ENTER. The modem responds with OK if the setup password is correct, and ERROR if it is wrong. 3. The default parity value for your modem is no parity (AT#CBP0 ). To change the modem’s prompt messages to use even parity, typeAT#CBP2 and press ENTER. For odd parity, type AT#CBP1 and press ENTER. 4. To store the new parity value, type AT&W and press ENTER. To Assign Callback Passwords and Phone Numbers 1. Open a data communications program such as HyperTerminal. 2. In the terminal window, type AT#Sxxxxxxxx, where xxxxxxxxis your password, and press ENTER. The modem responds 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 ENTER. 4. To store a callback password for the first callback memory location, type AT#CBN0xxxxxxxx, where xxxxxxxxis the first password, and press ENTER. The password must be unique, must be six to eight characters, in length, and must not contain a + or -character. 5. To store a callback password for the second callback memory location, type AT#CBN1xxxxxxxx, where xxxxxxxxis the second password, and press ENTER. Note that the memory location number in the command is incremented by one. 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 xxxxxxxxis the dialing 6 Callback Security 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 sh...

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