Can't receive or make calls

[Blossom4]

I have a router with my phone connected directly in to my router. My landline has stopped working , service checker says everything is fine.. Not a fault with the handset.

[Mark39]

@Blossom4 

Have you recently switched to Sky or has your landline with Sky been working ok to now?

Is it a black router, or white? If it's a black one, is the Voice LED onmthe front panel illuminated? Amber or green?

[Blossom4]

I reset router and now it's working fine.