Chapter 8: Configuring the User Database
Perle 833IS User Guide 147
Preferred Callback Group
By default, a callback will be performed on the next available line that has been
enabled for callback. If you wish to allocate a specific group of channels for callback
by this user, select the group in the drop box. The callback group must have been
previously defined.
Use Exclusively
If you check Use Exclusively, the callback will occur only if there is a free channel
available in the selected group. If Use Exclusively is not checked, the callback will
use another channel enabled for callback if a channel from the preferred group is not
available.
Callback Phone Numbers
These are the phone numbers that are used by fixed callback. Each number can be up
to 32 characters long. If you have enabled fixed callback, you must enter a Main
phone number. The Alternate phone number is optional.
Lan To Lan
The LAN to LAN features allows a router to dial in to the 833IS. The network on the
router's LAN can then communicate with the network on the 833IS LAN using IP or
IPX.
Note that the communication is strictly between the router's LAN and the 833IS LAN
for this connection. If a second router dials into the same 833IS, it cannot
communicate with the first router.
The 833IS provides flexibility in the connection:
■The dial in router can originate the connection
■The 833IS can originate the connection on power up or if it loses contact with
the dial in router
■A "virtual connection" can be established between the dial in router and 833IS.
To save toll charges, it may be desirable to keep the link established between the
dial in router and the 833IS only if there is data traffic. You can configure a
"virtual connection" in the 833IS, which will keep the dial in session alive but
drop the physical link if there is no data traffic. When there is data to be sent to
the dial in router, it is dialed automatically and the data is then sent. This
automatic reconnect is sometimes referred to as "dial on demand". Similarly, the
dial in router can drop the connection, and reconnect to the same session when