Configuring and Managing BRI-ST Digital Line Cards 177Modifying a BRI SpanTo modify a span:1 On the Digital Line Cards tab, from the Select Device Type drop-down list,select ISDN BRI Span List and then click Apply.2 Select the span you want to modify from the Span List. Click Modify. TheModify Span dialog box appears.3 Make the changes that you want. Click the Help button to see moreinformation about the dialog box fields. The ISDN BRI-ST Digital Line Cardsupports two channels per span.4 Click Apply.5 Enable the On Line check box to bring the span online. Note that thespan does not come online unless the card is online first.6 Click Apply to make the changes and then click OK.Modifying Audio ControlsIn a normal environment, you should not need to change the AudioControls from their default settings. If you have an issue with soundquality and you cannot resolve it using the volume controls on the NBXTelephones, contact your technical support representative.CAUTION: Do not change your Audio Controls settings unless you areinstructed to do so by a qualified support representative.Adding or Modifyinga BRI GroupA BRI-ST Digital Line Card group is one or more BRI channels that areassigned the same characteristics. These sections tell you how to performthese tasks:■ Adding a BRI Group■ Modifying a BRI Group■ Changing BRI Group Membership■ Removing a BRI GroupAdding a BRI GroupYou add a new group when you need to assign common characteristicsto several BRI channels.