Black Box 16 port User Manual page 90

the unit can still provide
fixed callback - provided you
have set the (fixed) callback
parameter to 'on' for that
particular user; see
Configuring a user account on
page 100.
Black Box Console Server user guide
PPP line
ROAMING
CALLBACK
OFF
-
ON
for the particular user you must set
(fixed) callback to 'on'. See
a user account on page 100. Unless fixed
callback is set to on for user, he/she
cannot receive roaming callback.
the user must initially dial into the unit on
a line where roaming callback is set to
'on'. You must therefore provide the user
with the telephone number for this type of
line(s).
after successful authentication the unit will
prompt the user for a telephone number to
call him/her back. After receipt of the
number, the unit will drop the line, call the
user back on that telephone number. The
user will be authenticated again (a
precaution).
Configuring
90