ADTRAN Express XL, User Manual

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Chapter 3: Terminal Menu Operation and Structure
61200070L1-1 Express XL/XLT User Manual 81
Filters/Out Exceptions
Write security: 2; Read security: 5
This is a list of up to 32 filter entries. The setup is exactly the same as the
Filter/
In Exceptions list.
Filters/Demand Dial
Write security: 2; Read security: 5
The demand dial filters have two purposes: 1) cause the Express XL/XLT in
Bridge mode to dial this Connection List profile, and 2) determine which traf-
fic will cause the idle timer to be reset, keeping the connection active. The lat-
ter is used in Bridge or IP/IPX Router mode. The idle timer is a timer in the
Express XL/XLT which continually increments until it reaches the idle time-
out parameters value set in the Connection List, at which point the connection
is hung-up.
When this filter is enabled, direct control can be placed over which packets are
considered as demand and which are ignored. Packets that are ignored cause
a connection not to be dialed and do not reset the idle timer of an active con-
nection. This is especially helpful for bridged connections since bridges can-
not easily distinguish true demand traffic from overhead traffic like certain
broadcast and multicast packets. There are three possible selections for this
parameter:
Disabled (def) - Turns off demand dial filtering. No packets cause
demand dialing for this profile and all outgoing and incoming
packets reset the idle timer.
Ignore All - When connected in any mode (Bridge, IP Router, or
IPX router), the idle timer is reset only when there is a match in
the Filters/Dem Dial Exceptions list. When not connected in
Bridge mode only, causes the Express XL/XLT to dial using this
Connection List profile if there is a match in the Filters/Dem Dial
Exceptions .
Demand All - When connected in any mode (Bridge, IP Router, or
IPX router), the idle timer is always reset except when there is a
match in the Filters/Dem Dial Exceptions list. When not
connected in Bridge mode only, causes the Express XL/XLT to
dial using this Connection List profile if there is NOT a match in
the Filters/Dem Dial Exceptions list.