The card supports the SwyxWare option pack SwyxStandby.

In order to activate this function on the SX2-express DualPRI, please make sure that the six-pole jumper is inserted between the two ISDN connections. If this jumper is not present, the card cannot support the standby option.

For information on configuring the SX2-express DualPRI before insertion, so that the existing relay can be used, please refer to the SwyxWare documentation.