We have an emergency alarm system connected to our router.

[JanCooper1]

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. 

[jamesn123]

@JanCooper1 

It is possible that Openreach do overnight maintenance, its also possible that the phone line disconnects then reconnects in a short period of time at the same time every month for some sort of lease renewal.