183ViewsISDN interface viewPredefined user rolesnetwork-adminUsage guidelinesTypically, ISDN devices use the ALERTING message to indicate that called user alerting has beeninitiated. To work with ISDN devices that use the PROGRESS message to convey this information,you must configure the command.Examples# Interpret the PROGRESS message as the ALERTING message on I SDN PRI interface Serial2/3/0:15. system-view[Sysname] interface serial 2/3/0:15[Sysname-Serial2/3/0:15] isdn progress-to-alerting enableisdn protocol-modeUse isdn protocol-mode to configure the ISDN functionality of an ISDN interface.Use undo isdn protocol-mode to restore the default.Syntaxisdn protocol-mode { network | user }undo isdn protocol-modeDefaultAn ISDN interface provides the ISDN user-side functionality.ViewsISDN interface viewPredefined user rolesnetwork-adminParametersnetwork: Specifies the network-side functionality.user: Specifies the user-side functionality.Usage guidelinesAn ISDN interface can provide the ISDN user-side or network-side functionality. For two ISDNdevices to communicate with each other, you must configure one end a s the network side andconfigure the other end as the user side.Typically, an ISDN interface is operating on the user side. However, when a BRI interface on a BSVcard is connected directly to an ISDN phone, you must configure the BRI interface as the networkside.You must configure the ISDN interface as the user side in the following situations:• The BRI interface for data services must operate on the user side.• ANSI, AT&T, ETSI, NI, or NTT is configured.You cannot configure the command when a call is present on the ISDN interface.