148CHAPTER 10: CONFIGURING WAN INTERFACE

If framing has been enabled on an E1 channel, you can set its frame format.

Perform the following configuration in CE3 interface view.

Table 170 Set E1 frame format

Operation

Command

 

 

Set E1 frame format

e1 line-numberset frame-format {

 

crc4 no-crc4 }

 

 

Restore the default CRC setting

undo e1 line-number set

 

frame-format

 

 

By default, the frame format of E1 channel is no-crc4.

6Configure Operating Mode of CE3 Interface

When setting the operating mode of an CE3 interface, you should set the operating modes of both the CE3 interface and the E1 channels on the interface.

Perform the following configuration in CE3 interface view.

Table 171 Set the operating mode of CE3 interface

Operation

Command

 

 

Enable E3 mode

using e3

 

 

Enable CE3 mode

using ce3

 

 

Restore the default operating mode

undo using

 

 

By default, CE3 mode is used.

When CE3 interface works in E3 mode, the system will automatically create a serial interface whose number is serial number/0:0 and whose rate is 34.368 Mbps. The interface has the same logic feature as that of a synchronous serial interface, therefore, it can be regarded as a synchronous serial interface for further configuration.

Table 172 Set the operating mode of E1 channel

Operation

Command

 

 

Configure E1 channels of CE3 interface to

e1 line-number unframed

work in E1 mode (unframed mode)

 

 

 

Configure E1 channels of CE3 interface to

undo e1 line-numberunframed

work in CE1 mode (framed mode)

 

 

 

Implement time slot binding on the CE1

e1 line-numberchannel-set

interface

set-number timeslot-listrange

 

 

Disable time slot binding on the CE1 interface

undo e1 line-numberchannel-set

 

set-number

 

 

The operation mode of E1 channels defaults to CE1 mode.

When E1 channel works in E1 mode (unframed mode), the system will automatically create a serial interface whose number is serial number / line-number:0and whose rate is 2048 kbps. The interface has the same logic feature as that of a synchronous serial interface, therefore, it can be regarded as a synchronous serial interface for further configuration.

When E1 channel works in CE1 mode (framed mode), timeslot binding can be performed on it. The system will automatically create a serial interface whose number is serial number / line-number:set-numberand whose rate is N x 64 kbps. The interface has the same logic feature as that of a synchronous serial interface, therefore, it can be regarded as a synchronous serial interface for further configuration.

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3Com 10014299 manual Set E1 frame format, Set the operating mode of CE3 interface, Set the operating mode of E1 channel