I'm not sure if the BT/Openreach/KCOM/whatever rules say, but physically it should be fine. Structured wiring was originally designed to support POTS as well as data and the usual RJ45 sockets are designed to accept US style phone plugs - and I doubt that the CAT3/4/5/6 improvements have made things worse for phone signals. Certainly my phone line at home wanders over a UTP CAT6 structured wiring system without any apparent problems (using appropriate RJ45-UK phone socket adaptors).
I'm not sure if the BT/Openreach/KCOM/whatever rules say, but physically it should be fine. Structured wiring was originally designed to support POTS as well as data and the usual RJ45 sockets are designed to accept US style phone plugs - and I doubt that the CAT3/4/5/6 improvements have made things worse for phone signals. Certainly my phone line at home wanders over a UTP CAT6 structured wiring system without any apparent problems (using appropriate RJ45-UK phone socket adaptors).
