Konftel 250 is an excellent choice for holding telephone conferences with great sound quality its the obvious choice when you have an analog line high performance smart features and expandable too the konftel 250 is equipped with konftels patented omnisound 20 audio technology for crystal clear sound save your contacts in the phone book and use the conference guide to easily set up multi party calls or pre programmed group calls konftel 250 also has a built in recording function that