NETGEAR XM128 ISDN - Manual (Page 101)

Reference Guide for the Model XM128 ISDN Digital Modem
Security Functions B-3
Level 3 Security
After the password is matched, the local modem prompts the remote user to enter a callback
number.
The three levels of security are summarized in Table B-2 .
Setting and Modifying Passwords
The AT*Hn command (where n represents the index to the entry) can define 40 user passwords.
Numbers between 0 and 39 are accepted.
The corresponding 40 callback numbers are defined by the AT&Zn=xxx command, where n
represents the index to the entry and xxx represents the assigned callback phone number. Any
character (ASCII 0-127) can be used in the password table. The maximum password length is eight
characters for each entry.
The security functions are accessible only through AT commands in terminal mode. A supervisory
password is required for adding or modifying the entries. The default supervisor password is
NETGEAR when the Model XM128 modem is shipped from the factory. This supervisory
password is sent to the remote user if Type 1 security is set at the remote end.
To modify the supervisor password, use the command AT*HS.
Table B-2. Levels of security
Level 1 Level 2 Level 3
Password Check Yes Yes Yes
CPN Check OK
and S119.6=0 N/A Call back Prompts the remote
user to enter callback
number for calling
back
CPN Check OK
and S119.6=1 N/A Keep the
connection
CPN unmatched N/A Disconnect
CPN not Available N/A Call back using the
corresponding
prestored number
AT Commands *G1 for Type 1
*G3 for Type 2 *G2 for Type 1
*G4 for Type 2 *G5 for Type 2