Cisco 1841 ADSL / SHDSL configuration

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Nov 6th, 2008
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I have a Cisco 1841 router with the following modules installed:



For some reason the HWIC-2SHDSL module in slot 1 is not supported / disabled in this slot according to the 'show diag' command. (Please see attached show_diag.txt)

From the configuration manual the minimum Cisco IOS Release should be version 12.4(11)XJ. The output from the 'show version' command outputs the following:

Cisco IOS Software, 1841 Software (C1841-BROADBAND-M), Version 12.4(4)T8, RELEASE SOFTWARE (fc3)

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

My question is do I have the correct ISO version installed on the router? If I do have the correct version why when I run the command 'controller shdsl 1/0/0' do I get the following output?

router(config)#controller shdsl 1/0/0


% Invalid input detected at '^' marker.

Thanks in advance.

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Giuseppe Larosa Sat, 11/08/2008 - 12:20
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Hello Attila,

try to upgrade to

BROADBAND c1841-broadband-mz.124-22.T.bin

as per feature navigator

searching for feature I found support for two to 4 wire SHDSL detection

So this should support the SHDSL HWIC

current ios is clearly not able

Hope to help


attila.bogar Mon, 11/10/2008 - 21:20
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Thanks Giuseppe, I have updated the IOS and it now recognizes the SHDSL module.




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