ZyXEL Communications ZyXEL Prestige 100MH, User Manual, Page: 88 / 129

Prestige 100MH PSTN Router/Hub
6-10
Chapter 6
Dial-in Server Applications
Table 6-3. Edit Dial-in User Menu Fields (continued)
Field Description
Rem CLID If you have enabled the CLID Authen field in Menu 13, then you need to
specify the telephone number from which this dial-in user calls. Your
Prestige will check this number against the CLID in the incoming call. If
they do not match and the CLID Authen is Required, then your Prestige
will not answer the call.
Idle Time-out Enter the idle time (in seconds). This time-out determines how long the
dial-in user can be idle before your
Prestige disconnects the call.
Idle time is defined as the period of time where there is no data traffic
between the dial-in user and your
Prestige . The default is 300 seconds (5
minutes).
Once you have completed filling in Menu 14.1 - Edit Dial-in User, press [Enter] at the message
[Press ENTER to Confirm…] to save your selections, or press [Esc] at any time to cancel
6.5 CLID Authentication
CLID (Calling Line ID) authentication affords you the security of limiting a user to only
initiate connections from a fixed location. The
Prestige uses the caller ID sent by the switch to
match against the CLIDs in the database. Please note that for CLID authentication to work on
the
Prestige , your telephone company must support caller ID. You must also include “#cid=1”
in the [
initAT
] string in Menu 2 to enable caller ID detection on the modem.
6.6 Callback
Callback serves two purposes. One is security. When set to callback to a fixed number, an
intruder will not gain access to your network even if he/she stole the password from your user,
because the
Prestige always calls back to the pre-configured number.
The other is ease of accounting. For instance, your company pays for the connection charges
for telecommuting employees and you use your
Prestige as the dial in server. When you turn
on the callback option for the dial-in users, all usage are charged to the company instead of
the employees, and your accounting department can avoid the hassles of accountability and
reimbursement.