80 CHAPTER 7: ADVANCED CONFIGURATION OF PORTS AND PATHSISDN on the WANPort (43x, 44x, 53xand 54x)This section describes three scenarios using the built-in ISDN port:n Scenario 1: Using Each B Channel Separatelyn Scenario 2: Using Both B Channels Togethern Scenario 3: Connecting to Multiple DestinationsDial number list A dial number list allows the software toselect a phone number from a list ofdestination phone numbers associated witha port or virtual port. Numbers in the dial listare selected sequentially. The dial number listis required.Procedureincluded inscenariosMoreinformation: SeeChapter 9Bandwidth-on-demandWhen the system detects traffic congestionon a port, you can enablebandwidth-on-demand to automaticallybring up more lines either from a dial pool orfrom another path assigned to the sameport.You specify the bandwidth that a portshould operate at normally, then define themaximum amount of bandwidth above thissetting that the port can have.See page 91Disaster recovery If the primary line fails, the bridge/router canuse a reserved dial-up line as back-up.See page 92Table 17 Bandwidth Management Features for Dial-Up Lines (continued)BandwidthManagementFeature Description Location
