User`s guide

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When an "Always On" route becomes "In Service", wait n seconds before using
it parameter.
On and return to service immediately
As above “On” but the unit will try and connect immediately and without delay.
Put this interface "Out of Service" when an always-on connection attempt fails
Usually, always-on interfaces will not go out of service unless they have connected at least
once. When this option is turned “On”, the interface will go out of service even if the first
connection attempt fails.
Attempt to re-connect after n seconds
This parameter specifies the length of time in seconds that the unit will wait after an
“always-on” ISDN connection has been terminated before trying to re-establish the link.
If an inhibited PPP interface is connected, attempt to re-connect after n seconds
The value of this parameter takes precedence over Configuration - Network >
Interfaces > ISDN > ISDN Answering > Advanced > Wait n seconds after power-
up before activating this interface when some other PPP that is usually inhibited by this
one is connected. This parameter would typically be used to reduce the connection retry
rate when a lower priority PPP is connected.
Wait n seconds after power-up before activating this interface
If this parameter is not set to “0”, this is the initial delay after power up before the PPP will
activate. After that, the usual always-on activation timers apply.
Control when this interface can connect using Time band n
This parameter specifies the Time Band number to use for this ISDN instance (see
Configuration - Network > Timebands).
Keep this interface up for at least n seconds
If this parameter is set to a non-zero value, then ISDN will not close the connection for the
specified period, even if the link is inactive.
Close this interface
After n seconds
This parameter specifies the maximum time that this ISDN Interface may remain
connected during any one session. After this time, the ISDN link is deactivated.
If it has been up for n minutes in a day
This parameter specifies the maximum time that this ISDN interface may remain
connected during any one day. After this time, the ISDN link is deactivated.
If the link has been idle for n seconds
The ISDN interface will close the connection if the link is inactive for the length of time
specified by this parameter.
Alternative idle timer for static routes n seconds
This parameter may be used to specify an alternative Inactivity timeout for use in
conjunction with the Use 2nd inactivity timeout when this route becomes available
parameter on the Configuration - Routing > Routing > Static Route n pages. This timeout
will only be used until the PPP next deactivates. After that, the normal timeout value is
used.
If the link has been idle for s seconds
The router will deactivate this interface after the time specified in this text box if it
detects that the link has not passed any traffic for that period.