H3C SR6600 Command Reference Manual

Also see for SR6600 SPE-FWM: Configuration guide Configuration guide Configuration guide Command reference Command reference

3-21ViewCE1 interface viewDefault Level2: System levelParametersinverted: Enables user data inversion.normal: Disables user data inversion.DescriptionUse the data-coding inverted command to enable user data inversion on the CE1 interface.Use the data-coding normal command to disable user data inversion on the CE1 interface.Use the undo data-coding command to restore the default.By default, data inversion is disabled.To prevent 7e in valid data from being taken for stuffing characters, HDLC inserts a zero after every fiveones in the data stream. Then, HDLC inverts every one bit into a zero and every zero bit into a one. Thisensures at least one out of every eight bits is a one. When AMI encoding is used on an E1 interface, theuse of data inversion can eliminate the presence of multiple consecutive zeros.On the CE1 interfaces at two ends of an E1 line, the same data inversion setting must be used.Examples# Enable user data inversion on CE1 interface E1 2/0/0. system-view[Sysname] controller e1 2/0/0[Sysname-E1 2/0/0] data-coding inverteddescriptionSyntaxdescription textundo descriptionViewCE1 interface viewDefault Level2: System levelParameterstext: interface description, which is a string of 1 to 80 characters.DescriptionUse the description command to configure the description for a CE1 interface.Use the undo description command to restore the default.By default, the description of a CE1 interface is its interface name followed by the Interface string, E12/0/0 Interface, for example.