ITU-T M.727 PDF

Planned maintenance actions by a network operator may cause outage of services. Especially, maintenance of local access facilities will normally cause service outage because there is usually no backup available. From the view point of customer satisfaction, such outages caused by planned maintenance actions should be notified to the customer in advance.

Under some service agreements such as one-stop-shopping, a service provider is required to notify the customer not only his actual planned outages but also other planned outages by the other contracted network operators such as neighbour and distant network operators.

The present Recommendation introduces the concept of Planned Outage Notification Point and describes its responsibilities and functions.