ZyXEL Communications Prestige 128IMH, User Manual, Page: 65 / 142

Prestige 128IMH User’s Guide ZyXEL
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Page 7-9
Callback
This field determines if the Prestige will allow call back to the remote dial-in
user upon dial-in. If this option is enabled, the Prestige will call back to the
remote dial-in user if s/he requests it. In such a case, the Prestige will
disconnect the initial call from this user and dial back to the specified call
back number (see below). The default is no callback
Callback
Phone # This is a required field if Callback is Yes. Enter the telephone number to
which the Prestige calls back.. Otherwise, an N/A appears in the field.
Phone #
Supplied
by Caller If Callback is No, an N/A appears in the field. The callback override allows
the remote dial-in user to specify the call back telephone number on a call-
by-call basis. This is useful when the Prestige returns a call back to a
mobile user at different numbers, e.g., a sales rep in a hotel. Please note
that the default is No, i.e., the Prestige always calls back to the fixed
callback number.
Rem CLID
If you have enabled the CLID Authen field in menu 13, then you need to
specify the telephone number from which this remote dial-in user calls. The
Prestige checks this number against the CLID in the incoming call. If they
do not match and the CLID Authen is Required, then the Prestige will
reject the call.
Idle Time-
out
Enter the idle time (in seconds). The Idle Timeout sets the limit on the time
that the connection is idle before the call is automatically disconnected
when the Prestige is calling back. This field will only be used when calling
back. Otherwise, the caller governs the idle timeout. The default is 300
seconds (5 minutes).
Table 7-1 Fields in Menu 14.1 - Edit Dial-in User
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.
7.5.1. More on CLID
CLID allows the Prestige to authenticate the caller before a call is answered, thus saving
the cost of a connection. The Prestige uses the caller ID in the ISDN call setup message to
match against the CLID in the database.
However, CLID may not be available due to your switch configuration.
Besides authentication, another application of CLID is to combine it with call back. For
instance, your company pays for the connection charges for telecommuting employees and
you are using the Prestige as the dial in server. You can turn on both the CLID
authentication and call back choices for the dial-in users. By doing so, all usage are charged
to the company instead of the employees and your accounting department can avoid the
hassles of accountability and reimbursement.