Configuring an E1 channel
The serial interfaces created for E1 channels have the same logical features as a synchronous serial interface. You can configure these serial interfaces in the same way you configure a standard synchronous serial interface. For more information about configuring synchronous serial interfaces, see "Configuring WAN interfaces."
To configure an E1 channel:
Step | Command | Remarks | |
|---|---|---|---|
1. Enter system view. | system-view | N/A | |
2. Enter CPOS interface view. | controller cpos cpos-number | N/A | |
3. Set the framing format for the E1 channel. | e1 e1-number frame-format { crc4 | no-crc4 } | The default setting is no-CRC4. | |
4. Set the clock mode for the E1 channel. | e1 e1-number clock { master | slave } | The default setting is slave. | |
5. (Optional.) Enable loopback on the E1 channel. | e1 e1-number loopback { local | payload | remote } | By default, loopback is disabled. | |
6. Set overhead bytes for the E1 channel. | e1 e1-number flag c2 c2-value e1 e1-number flag j2 { sdh | sonet } j2-string | By default, C2 is set to hexadecimal 02, and J2 contains cyclic empty character strings. | |
7. Configure the E1 channel operating mode. |
| By default, an E1 channel operates in framed mode and is not channelized. When you place an E1 channel in unframed mode, the system automatically creates a 2.048 Mbps serial interface. When you bundle timeslots on an E1 channel in framed mode, the system automatically creates a serial interface for the bundle. The rate of the serial interface is identical to 64 kbps x number of bundled timeslots. | |
8. (Optional.) Shut down the specified E1 channel. | e1 e1-number shutdown | By default, an E1 channel is up. | |