oliverenglands

Serg I have tried several supliers and they all tell me the call buttons are not available. I've tried fixing them but the copper connectors have snapped off. I've attached a photo of the front panel

I have a flat in a block with 5 others and the entry buzzer for my flat does not work, though the intercom and door unlock are ok. The problem seems the be the call button on the main control panel which I have bypassed and the buzzer then works. The management company have sent there electrician and are suggesting the whole system needs to be replaced as the call buttons are not now available. I have had a search on the interent and cannot find a supplier for the buttons but it does seem overkilll to have to replace the whole system ie main panel and the phones in each flat . The system seems to be an ACET 702 2 wire. Can you help with the following questions 1) Does anyone know of a supplier of the call buttons? 2) I have had a response from a supplier who suggest I can replace the controller with a two wire Acet FVP006 does this seem correct? 3) Could I still use the existing handsets ? Many thanks