ADTRAN L128 - Manual (Page 98)

Chapter 3: Terminal Menu Operation and Structure
61202.070L1-1 Express L128/L128T 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 L128/L128T
in Bridge mode to dial this Connection List profile, and 2) determine which
traffic will cause the idle timer to be reset, keeping the connection active. The
latter is used in Bridge or IP/IPX Router mode. The idle timer is a timer in the
Express L128/L128T which continually increments until it reaches the idle
time-out parameters value set in the Connection List, at which point the con-
nection 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 L128/L128T 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 L128/L128T to
dial using this Connection List profile if there is NOT a match in
the Filters/Dem Dial Exceptions list.