Re: how to activate a phone line??
Hi Sarah,
It sounds like, as bacchus is suggesting, the upstairs socket is not wired correctly or the cable is damaged or broken somewhere between the two sockets.
So long as you have a working connection in the house, the fault is not with Eircom, and they are not responsible for anything beyond that. No activation as such is required, just a simple connection between the two sockets.
Can you follow the cable between the two sockets to see if you can locate the issue? Check the connections within the two sockets. If this still does not revleal the root cause, you might be as well off replacing the cable between the two sockets, should be straight forward job.
Regards,
Leo