The final solution using bits out of my stock of cables and connectors was a secondary phone socket on both ends of the CAT 6 cable then a BT plug to BT Plug patch lead into the back of the Sky WiFi router, so the lift has an emergency landline phone connection that won't work during a power outage.
These lifts are built within the UK, the Chinese simply build a mobile phone into the control panel of their lifts, which is a simple solution so long as someone puts a SIM card into the phone and arranges payment for it, as well as changing the language on the phone to English.
One lady got stuck in her lift after her tea trolley wedged under it and the mobile phone display was in Chinese.
