Configure the CE1/PRI interface of an AR router to be working in CE1 mode

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controller e1 1/0/0 //Enter the view of the specified CE1/PRI interface.
[Huawei-E1 1/0/0] using ce1 //Configure the CE1/PRI interface to be working in CE1/PRI mode. The CE1/PRI interface works in CE1/PRI mode by default.
[Huawei-E1 1/0/0] channel-set 1 timeslot-list 1,10-16,18 //You can create channel sets for multiple times. Corresponding serial interfaces are created automatically. You can run the display interface brief command to check the created serial interfaces.
[Huawei-E1 1/0/0] line-termination 75-ohm //You can select 75-ohm coaxial cables or 120-ohm twisted pair cables. Twisted pair cables are used by default. You can directly use twisted pair cables on 4-interface and 8-interface cards.
[Huawei-E1 1/0/0] frame-format crc4 //Set the frame format of the interface to CRC4 or NO-CRC4. The frame format is NO-CRC4 by default and can be modified. The frame format of the interface must be in accordance with that of the peer end (except for the clock).
[Huawei-E1 1/0/0] 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-E1 1/0/0] itf type 7e //Set the type of characters filled between frames on the interface to 7e or ff. The default type is 7e.
[Huawei-E1 1/0/0] 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-E1 1/0/0] idlecode 7e //Set the idle code type of the line to 7e or ff. The default value is 7e.
[Huawei-E1 1/0/0] detect-rai //Configure whether the remote alarm indication (RAI) detection is enabled on the interface. The detection is enabled by default.

Run the display controller e1 interface-number command to check the status and parameters of the CE1/PRI interface.
Run the display interface serial interface-number command to check the status and statistics of the corresponding serial interface.

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