Hi, I need a standard PSTN/DECT phone extending to an office 100m away, where walls and distance make the typical cordless DECT phones not really feasible. I'm going to do powerline-ethernet to get wifi there - is there any reasonably priced solution to getting this phoneline over there as well, so it can be used at the same time in both locations? I need the same landline number, so external VOIP services is sadly not an option. Or maybe an expandable set of DECT phones that support multiple signal boosters? If it complicates it, there's only one phone socket in the first location, and that's currently sharing to 3 handsets with a normal cordless device. Thanks for any ideas!