Cisco Cisco IOS Software Release 12.3(4)T

The default DSL operating mode is auto.

EXEC

This configuration command applies to a specific ATM interface. The interface to which it applies must 
be specified before using the command.

This command is for testing or lab environments only. Using a configuration other than the 
default configuration for the DSL operating mode can lead to unpredictable behavior on the 
ADSL line. 

router# conf t 

Enter configuration commands, one per line. End with CNTL/Z. 

router(config)# int atm 0 

router(config-if)# dsl operating-mode itu-dmt 

router(config-if)# end 

router#

Configure the ADSL line to train in the ETSI mode.

The presence of the tone low option in this command tells the 
WIC-1ADSL-I-DG to use carrier tones 29 through 48. The absence of tone 
low tells the WIC-1ADSL-I-DG to use carrier tones 33 through 56. The 
latter tone set is used when the WIC is operating in accordance with 
Deutsche Telekom specification U-R2.

12.1(3)XJ

The command dsl operating-mode was introduced on the Cisco 1700 series 
routers.

12.2(2)T

This command was integrated into Cisco IOS Release 12.2(2)T.

12.2(13)ZH

This command was modified to include the keyword splitterless for the 
Cisco WIC-1ADSL, and syntax (including tone low) for the 
Cisco WIC-1ADSL-I-DG.

12.2(15)ZJ

The command changes made in Cisco IOS Release 12.2(13)ZH were 
integrated into Cisco IOS Release 12.2(15)ZJ.

12.3(4)T

The command changes made in Cisco IOS Release 12.2(13)ZJ were 
integrated into Cisco IOS Release 12.3(4)T.