226 CHAPTER 13: F UNDAMENTAL CT1/PRI I NTERFACE CONFIGURATION COMMANDSThe line idle code is sent in the timeslots that are not bundled into the logicalchannels on the interface.Example # Set the line idle code to 0x7E on CT1/PRI interface T1 2/0. system-view[Sysname] controller t1 2/0[Sysname-T1 2/0] idlecode 7eitf (CT1/PRI interface view)Syntax itf { number number | type { 7e | ff } }undo itf { number | type }View CT1/PRI interface viewParameter number number: Sets the number of interframe filling tags (an interframe fillingtag is one byte in length). The number argument ranges from 0 to 14.type { 7e | ff }: Sets the interframe filling tag to 0x7E by specifying the 7e keywordor to 0xFF by specifying the ff keyword. On CT1/PRI interfaces, the defaultinterframe filling tag is 0x7E.Description Use the itf command to set the type and the number of interframe filling tags onthe CT1/PRI interface. Two types of interframe filling tag are available: 0x7E and0xFF.Use the undo itf command to restore the default.By default, the interframe filling tag is 0x7E, the number of interframe filling tagsis 4.Interframe filling tags are sent when no service data is sent on the timeslotsbundled into logical channels on a CT1/PRI interface.Example # Set the interframe filling tag to 0xFF on CT1/PRI interface T1 2/0. system-view[Sysname] controller t1 2/0[Sysname-T1 2/0] itf type ff# Set the number of interframe filling tags to five on CT1/PRI interface T1 2/0. system-view[Sysname] controller t1 2/0[Sysname-T1 2/0] itf number 5loopback (CT1/PRI interface view)Syntax loopback { local | payload | remote }
