Overview 9Line will be performing routine system updates and security patches to the SBC operating system.
Expected Service Impact Due to load balancing and high availability, we do not anticipate any disruption to critical services during this maintenance window. Regional clusters will be upgraded one at a time, with calls automatically routed to the remaining active clusters.
Recommendations To ensure seamless failover, please confirm your SBC configuration includes:
1. OPTION messages enabled for keepalive checks
2. Paths configured to both primary and secondary 9Line call server clusters
Contact Questions about this maintenance? Please open a ticket with us at support.9line911.com.
Posted Aug 11, 2026 - 11:43 CDT
This scheduled maintenance affects: Core Infrastructure (US - SBCs - Primary Cluster (SC), US - SBCs - Secondary Cluster (W2), US - SBCs - Primary Cluster (E2)).