Clid Authentication; Callback - ZyXEL Communications PRESTIGE 153 User Manual

Prestige 153/153X WAN Bridge/Routers
Table 8-3. Edit Dial-in User Menu Fields (continued)
Field Description
Rem CLID If you enable CLID Authen field in Menu 13, then you need to specify the
telephone number from which this user calls. Your Prestige will check the
CLID in the incoming call against the CLIDs in the database. If they do not
match and CLID Authen is Required, your Prestige will not answer the call.
Idle Time- Enter the idle time (in seconds). This time-out determines how long the dial-in
out user can be idle before your Prestige disconnects the call when the Prestige
is calling back.
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 configuration, or press [Esc] at any time to cancel.
8.5

CLID Authentication

CLID (Calling Line IDentification) 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 the AT command in the [
modem.
8.6

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.
8-10
] string in Menu 2 to enable caller ID detection on the
initAT
Default=300
Dial-in Server Configuration
Option
seconds