Wide Compatibility
This amplifier has telephone compatibility switch "1" and "2", which can be applied to the most of IP phones, such as Fanvil, Polycom, Snom, Poly, Grandstream, Yealink, Cisco, Mitel, Avaya, Aastra, etc.It has two RJ09 sockets that can connect two RJ09 headsets, and is also equipped with headset compatibility switch, suitable for universal RJ09 headsets and Plantronics headsets on the market.
