1.1.1.4 Multiple Subscriber Number (MSN) Ringing ServiceDescriptionProvides automatic direction of an incoming ISDN-BRI (Basic Rate Interface) line call with an MSN to apreprogrammed destination. One ISDN-BRI port can support a maximum of 10 MSNs. Each MSN has adestination for each time mode (day/lunch/break/night).Point-to-multipoint must be selected for the ISDN configuration.[Method Flowchart]CLI works.YesYesNoDoes the call have its CLI*information and is CLI modeenabled for the time mode?NoIs the CLI destinationassigned?The call is routed to theMSN destination.The call is routed to theCLI destination.NoYesYesIs the MSN found in theMSN table?The call is ignored.Is the MSN destination forthe time mode assigned?No*: Calling Line Identification (CLI) Distribution:If the CLI routing is enabled and the caller's identification number is assigned in the Caller IDTable, the call will not be routed to the MSN destination, but routed to the CLI destination.NoAre any MSNs assignedin the MSN table?Yes The call is routed to theoperator (InterceptRouting—No Destination).The call is routed to theoperator (InterceptRouting—No Destination).A trunk call is received.[Programming Example of MSN Table for ISDN BRI Port 1]A table can be programmed for each ISDN-BRI port. Each BRI port has 10 MSN locations.® 12.6 [10-4] MSN TableFeature Guide 231.1.1 Incoming Trunk Call Features
