phone number has stopped working and outgoing call numbers not recognised either

[Colin+wareham]

the phone number we were allocated worked for 2 weeks but it has stopped connecting. There is still a dial tone but outgoing numbers are not recognised for some strange reason

[Mark39]

I assume you're new to Sky landline/broadband services.

When was your service activated?

Is your phone plugged into your broadband Hub?

Do you have a black Hub or white?

If it's black, is the 'Voice' LED on the front panel illuminated? Amber or green? 

Are you able to receive calls?