Perle Systems SCS8C DC Manuale Utente

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Adding/Editing Users
Session Timeout
The amount of time, in seconds, before the IOLAN forcibly closes a user’s 
session (connection). The default value is 
0
 (zero), meaning that the session 
timer will not expire (the session is open permanently, or until the user logs 
out). The 
User Session Timeout
 will override all other 
Serial Port Session 
Timeout
 parameters.
Range: 0-4294967
Default: 0
Enable Callback
When enabled, enter a phone number for the IOLAN to call the user back (the 
Enable Callback
 parameter is unrelated to the 
Serial Port Remote Access 
(PPP) 
profile
 Dial
 parameter).
Note: the IOLAN will allow callback only when a user is authenticated. If the 
protocol over the link does not provide authentication, there will be no 
callback. Therefore, when the 
Serial Port 
profile is set to 
Remote Access 
(PPP)
, you must use either 
PAP
 or 
CHAP
, because these protocols provide 
authentication. 
The IOLAN supports another type of callback, 
Roaming Callback
, which is 
configurable when the 
Serial Port 
profile is set to 
Remote Access (PPP)
Default: Disabled
Phone Number
The phone number the IOLAN will dial to callback the user (you must have set 
Enable Callback
 enabled). 
Restrictions: Enter the number without spaces. 
Language
You can specify whether a user will use 
English
 or 
Custom Language
 as the 
language that appears in the Menu or CLI. The IOLAN supports one custom 
language that must be downloaded to the IOLAN.
Default: English
 for more information about Custom Languages.
Hotkey Prefix
The prefix that a user types to control the current session.
Data Options:
z
^a
 
number
—To switch from one session to another, press 
^a
 (Ctrl-a) and 
then the required session number. For example, 
^a 2
 would switch you to 
session 2. Pressing 
^a 0 
will return you to the IOLAN Menu.
z
^a n
—Display the next session. The current session will remain active. 
The lowest numbered active session will be displayed.
z
^a p
—Display the previous session. The current session will remain 
active. The highest numbered active session will be displayed.
z
^a m
—To exit a session and return to the IOLAN. You will be returned to 
the menu. The session will be left running.
z
^a l
—(Lowercase L) Locks the serial port until the user unlocks it. The 
user is prompted for a password (any password, excluding spaces) and the 
serial port is locked. The user must retype the password to unlock the 
serial port.
z
^r
—When you switch from a session back to the Menu, the screen may 
not be redrawn correctly. If this happens, use this command to redraw it 
properly. This is always 
Ctrl R
, regardless of the 
Hotkey Prefix
.
The 
User Hotkey Prefix
 value overrides the 
Serial Port Hotkey Prefix
 value. 
You can use the 
Hotkey Prefix
 keys to lock a serial port only when the serial 
port’s 
Allow Port Locking
 parameter is enabled.
Default: Hex 01 (Ctrl-a or ^a)