Configuring a E1 Interface
Before you configure a channelized E1 interface, familiarize yourself with the usage scenario, complete the pre-configuration tasks, and obtain the configuration procedure for the configuration.
Precautions
- If a physical interface has no cable connected, run the shutdown command to disable this interface to prevent interference with the interface.
- After you configure services on an interface, run the shutdown and then undo shutdown commands in the current interface view to ensure that the configured services are loaded onto the interface.
- Configuring the Working Mode for an E1 Interface
This section describes how to configure the working mode of a channelized E1 interface. E1 interfaces can work in either clear channel mode or channelized mode. - Configuring the Clock Mode for a CE1 Interface
A CE1 interface works in either master clock mode or slave clock mode. When two CE1 interfaces are directly connected, you must configure one to work in master clock mode and the other in slave clock mode. When a CE1 interface is connected to a transmission device, the CE1 interface must work in slave clock mode. - Configuring the Frame Format for a CE1 Interface
You can configure a CE1 interface to use a 4-bit CRC code to check physical frames. - Configuring the Loopback Function for an E1 Interface
This section describes how to configure the loopback function on a channelized E1 interface. The loopback function is used to check the interface or cable status. In normal situations, the loopback function is disabled. - Configuring ES-TCA Alarm Thresholds on a CE1 Interface
If the threshold for triggering an ES-TCA alarm is set and the number of E1 code errors exceeds the threshold, an alarm will be generated. - Verifying the CE1 Interface Configuration
After you configure a channelized E1 (CE1) interface, verify the configurations and status of the CE1 interface.