Our emergency alarm system is connected to our router, on 31st January and 29th February (both last days of the month) we have been woken by our alarm loudly stating "warning the telephone line is disconnected" it isn't! Both times this has happened at 4am ish but only on those dates. The sky system was put in on the 29th January, is there an update that sky do on the last day of the month around that time? Please help. Thanks.
