66 of 202 INM 4.1 New Feature DescriptionINM Broadband Release 4.1 PG OC 98-13 Issue 1.2Contract Interfaces Feature OverviewFault Management Building Block (FMBB)Fault Management provides integrated support for fault information acrossmulti-domain, multi-vendor networks. The Fault Management Building Blockprovides open, standards based contract interfaces using CORBA IDLsupporting alarm query, alarm notification, alarm count and event notificationfunctionality.The FMBB mainly acts as the point of contact to provide integrated alarminformation over a network consisting of Nortel SONET and ATM nodes.Figure 24 on page 66 gives an example of how the FMBB interacts with othersystems in order to provide Fault Management Services to the clientapplications.Figure 24. FMBB interactionsThe Fault Management Building Block provides two contract interfaces tosupport fault management services: the Alarm Log Monitor interface and theEfd Control Monitor interface.FMBBClientsubnetwork = “NW1”FMDRCollector FMDRPassport MOASONET MOAsubnetwork = “NW2”subnetwork=“Passport-NW1” subnetwork=“Passport-NW2”subnetwork=“SONET-NW2”subnetwork=“SONET-NW1”SONET NEsPassport NEs Passport NEsSONET NEsOPC OPC OPCCollectorSONET MOAOPC OPC OPCPassport MOA