ISDN Connection Management
Auto-Call (Time-of-Day Connections)
An Auto-Call connection is an ISDN connection that is established each time the IOLINK router attempts to start the link. This starting of the links occurs each time an IOLINK router powers up or when the link goes through a restart or at the times specified by the Time-of-Day Activation Schedule. An Auto-Call connection would be used for a static WAN configuration that needs to be maintained at all specified times between sites.
Network A
This ISDN connection is made
upon initial power-up and is maintained during the times defined in the time-of-day schedule.
Figure 2 - 1 Auto-Call WAN Topology
The semi-permanent connection that results from an Auto-Call configuration means that the IOLINK router will attempt to maintain a connection to the partner IOLINK router during the times specified in the Time-of- Day Schedule. When Connection Management is enabled, the ISDN call to the Auto-Call number may be suspended during periods of inactivity.
2.2— IOLINK-PRO & 520 Reference Manual
