Configure network interfaces Configure ISDN interfaces
Digi TransPort WR Routers User Guide 242
Advanced ISDN parameters
Metric
The route metric that should be applied to this interface. For details, see the PPP parameters 
section.
Enable “Always On” mode of this interface
When enabled, causes the following two options to appear.
On/On and return to service immediately
These two radio buttons select whether the always-on functionality should simply be enabled 
or whether the additional facility to return the interface to the In Service state should be 
applied.
Put this interface “Out of Service” when an always-on connection attempt fails
Normally, always-on interfaces do not go out of service unless they have connected at least 
once. When enabled, causes the router to put the interface out of service even if the first 
connection attempt fails.
Attempt to re-connect after s seconds
Specifies the length of time in seconds that the router should wait after an always-on PPP 
connection has been terminated before trying to re-establish the link.
If an inhibited PPP interface is connected, attempt to re-connect after s seconds
The value in this setting takes precedence over the previous parameter when another PPP 
instance that is usually inhibited by this one is connected. This parameter typically reduces the 
connection retry rate when a lower priority PPP instance is connected.
Wait s seconds after power-up before activating this interface
The initial delay that the router applies before activating the PPP instance after power-up. After 
the initial power-up delay the normal always-on activation timers apply. If set to 0, no delay will 
be applied.
Control when this interface can connect using Time band n
Enables the time band function and allows selecting the desired time band instance. See 
Configure time bands for more information on time bands.
Keep this interface up for at least s seconds
The minimum period that the PPP interface should remain available. This means that even if the 
link becomes inactive before this period expires, the connection will remain open.