Where using two Win-911 servers in Active/Standby with each having a dedicated SMS modem, it would be good to extend this to allow for automatic switching between modems should one become unresponsive.
Admin
David Nolan
Sep 9, 2026
WIN-911 supports a "round robin" configuration for multiple SMS modems in the same installation. This is not a failover configuration, if both modems are active, the modem used for any one notification is chosen based on fast performance. Alerts will retry on another modem if they fail on the first modem. For failover WIN-911 licenses, the Ultimate Edition now includes a second license intended for failover system implementation.
WIN-911 supports a "round robin" configuration for multiple SMS modems in the same installation. This is not a failover configuration, if both modems are active, the modem used for any one notification is chosen based on fast performance. Alerts will retry on another modem if they fail on the first modem. For failover WIN-911 licenses, the Ultimate Edition now includes a second license intended for failover system implementation.