Router keeps disconnecting from the internet

[Stoney]

Hi,

I have a cisco 857w router installed in our office on our backup ADSL line. It was working fine for ages but now it keeps dropping the internet connection. Sometimes it doesn't connect all day, sometimes it's not a problem.

I have plugged in a spare Netgear ADSL router when the Cisco wont connect and it picks up the internet connection immediately, so this makes me think the issue is with the router and not the ADSL line.

I have run debug atm events on the router and the output is below. I haven't been able to find much information to decipher the error messages so if anyone knows of a resource that may help, that would be great.

Here's the output of debug atm events;

006193: *Feb 4 16:37:07.859 UTC: DSL: Send ADSL_OPEN command.
006194: *Feb 4 16:37:07.859 UTC: DSL(ATM0): Using subfunction 0x0
006195: *Feb 4 16:37:07.859 UTC: LOCAL:Max noise margin for power cutoff 31
006196: *Feb 4 16:37:07.859 UTC: DSL(ATM0): Sent extended command 0x3
006197: *Feb 4 16:37:10.359 UTC: DSL(ATM0): 1: Modem state = 0x9
006198: *Feb 4 16:37:12.859 UTC: DSL(ATM0): 2: Modem state = 0x9
006199: *Feb 4 16:37:15.359 UTC: DSL(ATM0): 3: Modem state = 0x10
006200: *Feb 4 16:37:17.859 UTC: DSL(ATM0): 4: Modem state = 0x10
006201: *Feb 4 16:37:20.359 UTC: DSL(ATM0): 5: Modem state = 0x10
006202: *Feb 4 16:37:20.707 UTC: DSL: Received response: 0x22
006203: *Feb 4 16:37:20.707 UTC: DSL: Open failed: Error in early non-CRC messa
ge or in first CRC-covered message -- retrying
006204: *Feb 4 16:37:20.707 UTC: sleep 5 seconds

It just keeps outputting this block of messages when it tries to connect.

Does anyone know what Response 0x22 means??

Any help would be greatly appreciated.

Thanks

[Modey]

Check if there is a newer firmware version from Cisco and update it. Might be worth a try.

[BosonMichael]

Perhaps change the dsl operating-mode from auto to something specific?

[Stoney]

Originally Posted by Modey

Check if there is a newer firmware version from Cisco and update it. Might be worth a try.

Thanks Modey,

I did update the firmware when I first installed the router. There is a new FW update but the release notes say it's not for general distribution, it has been developed for specific carriers. I'm still trying to find out exactly what carriers it is for.

Perhaps change the dsl operating-mode from auto to something specific?

Thanks Boson,

I'll try changing it to something else and see what happens.