These adapters allow analogue telephones / modems to be connected to Ethernet (Cat 5) wall sockets or UTP networks, with a view to running a phone system over Cat 5 structured cabling.
This variant is suitable as a 'Full Master' only when connected to a PABX telephone line. It is very similar to our product 80.500 except that whilst this device does contain the Master socket ring capacitor, it does not contain a Master socket surge arrestor. Both this product and 80.500 contain ring capacitors.
For the avoidance of confusion, this device does not perform an electronic PSTN to ISDN conversion.