Netgear XM128 ISDN User Manual download pdf (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

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 155 156

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Netgear XM128 ISDN User Manual Page 101