We're deploying some changes to the Ivy e911 feature, clarifying behavior, providing consistent DNIS, and allowing e911 callbacks to be routed to SIP trunks. Please read about the updates to e911 here: http://ivy.knowledgeowl.com/help/article/link/e911-information
During the maintenance, we will be rebuilding the nodes at Bonsai-5, Bonsai-6, and Bonsai-7. Downtime for each node is expected to be around 30 seconds, at which point inbound and outbound calls will fail. There are no changes to any other features at this time. Your equipment may need a manual restart if registration has timed out.