Problem Internet connection troubles with cisco 877W

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Hi peoples, i'm hoping someone can assist as i really am at the end of my tether. Ive recently moved home and started using the cisco 877w for my adsl connection, previous on a cable modem. My 877w keeps disconnecting, as in no pages on my wired or wireless devices., even rebooting sometimes. I was previously on an early ios, now ive upgraded to running c870-advipservicesk9-mz.151-4.M3.bin which i hoped would improve things, it seems a bit more stable as it does not seem to reboot, but still looses connection to provider, from what ive noticed the ATM light stays lit, so i assumed it was the dialer interface disconnecting, ive added in persistant dialing, but doesnt seem to have mate a hoot of different, could somene check out my config and my diagnostic outputs and possibly show me the way forward......maybe i need a different ios i dont know, the different ios versions confuse me.... See below

i can provide the 'show dsl interface' output at request.

View attachment show dsl interface.txt View attachment show running-config.txt

 

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Just a thought but the output shows some FEC errors, this is sometimes a line fault, do you have another router just to test the line?