In managed services, it is sometimes necessary to have to enter customer-specific information in order to initialize the service. In the US for example, ISDN requires that SPID values or local directory numbers be entered before calls can be placed. Such customer entered data can be held in local storage ensuring that future generic configuration downloads can take advantage of these customer specific settings without requiring re-entry by the customer. Applications include an email notification client and DNS proxy server among others. This battery-backed memory ensures that management and usage information such as ISDN call history and event logs are held even if a power failure occurs or the device is mistakenly powered off.
All events generated by the device carry a time stamp.
To ensure global significance and accuracy, the Virtual Access Service Managed Gateway uses an embedded real time clock. Software readable hardware information All hardware information is software readable. This ensures that all relevant information that could be obtained by physical inspection of the device can be obtained remotely. Configuration of these varies according to the specific Service Managed Gateway model.