How to configure the E1-F interface of an AR router to be working in framed mode

Configure the E1-F interface of an AR router to be working in framed mode:
# You can configure the E1-F interface to be working in framed mode if you need a lower-speed E1 channel (such as 512 kbit/s) to transmit service data.
display device //Check whether the slot number of the E1T1-F interface card is correct and whether the interface card has been registered properly.
system-view
[Huawei] interface Serial 1/0/0 //Enter the view of the interface. You can run the display interface brief command to check the information about the interface.
[Huawei-Serial1/0/0] undo fe1 unframed //Set the work mode of the interface to framed mode, which is the default work mode.
[Huawei-Serial1/0/0] fe1 timeslot-list 1-3,8,10 //(Optional) Set the timeslots that need to be bound. Timeslots 1 to 31 are bound by default (the maximum rate of the interface is 1984 kbit/s in this case).
[Huawei-Serial1/0/0] fe1 line-termination 75-ohm //You can select 75-ohm coaxial cables or 120-ohm twisted pair cables. Twisted pair cables are used by default. This configuration of cable type is optional. However, the configuration of the interface must be in accordance with that of the peer end (except for the clock).
[Huawei-Serial1/0/0] fe1 clock slave //Set the clock mode to master, slave or system. The default clock mode is slave.
[Huawei-Serial1/0/0] crc 16 //Set the CRC verification mode to CRC-16, CRC-32 or none by setting the value to 16, 32, or none. The default CRC verification mode is CRC-16.
[Huawei-Serial1/0/0] fe1 itf number 4 //Set the number of characters filled between frames on the interface to a value ranging from 0 to 14. The default value is 4.
[Huawei-Serial1/0/0] fe1 itf type 7e //Set the type of characters filled between frames on the interface to 7e or ff. The default type is 7e.
[Huawei-Serial1/0/0] fe1 data-coding inverted //Configure whether to invert data by setting the value to inverted or normal. The default value is normal. Set the value to inverted when the number of error packets increases.
[Huawei-Serial1/0/0] fe1 idlecode 7e //Set the idle code type of the line to 7e or ff. The default value is 7e.
[Huawei-Serial1/0/0] fe1 detect-rai //Disable the remote alarm indication (RAI) detection which is enabled by default.

Run the display fe1 serial [interface-number] command to check the basic configuration and alarms of the E1-F interface.
Run the display interface serial [interface-number] command to check the status and statistics of the E1-F interface.

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