OMS 3250

OMS3250Product Description12.3 Alarm ProcessingAlarms from each unit are collected and processed by the Communications/Controller unit,which performs the following functions:• alarm inhibition;• assignment of a category (e.g. urgent, not-urgent) to each alarm;• alarm reduction (in case an alarm occurs for a specific transport layer, the consequentialalarms on the transported streams are removed);• alarm filtering, logging and reporting: capability to select the alarm destination (to ElementManager and/or to the local alarm log and/or to the local terminal - the operator will beinformed that an alarm exists);• ground contacts driving;• rack alarm interface driving.All above-mentioned alarm processing functions can be configured via Element Manager orLocal Terminal.A cyclic local alarm log is available within the equipment. It is able to store al least 200 alarmmessages.Alarms can be either indicated through lamps/ground contacts, or sent to the local terminal or tothe Element Manager.Alarm outputs can be customised using the Local Terminal or from the OAM&P, an examplescheme of indications and functions that are provided by the Communications/Controller unit isas follows:• Any alarm indication ("ANY"): RED• Reminder indication ("MEM"): YELLOW• Urgent alarm indication ("URG"): RED• Not urgent alarm indication ("NURG"): RED• Internal alarm indication (“INT”): RED• External alarm indication ("EXT"): RED• Indicative alarm ("IND"): YELLOW (for alarms such as RDI and AIS)• Indication of abnormal condition (“ABN”): YELLOW• Local receive attention push button;• Lamp test push button.Input and Outputs Ground contacts are also available.Issue 1 Copyright – Refer to Page 2 Page 61 of 74