Product reviews for AVAYA DEFINITY 6221 CORDED PHONE SINGLE LINE OPERATION GRAY 

The 6221 telephone is a single line analog sets that requires one tip and ring pair for operation. These telephones have 10 programmable dialing buttons, a REDIAL button which allows automatic redial, selected personalized ringing pattern, a Message light, a HOLD button, and a Data jack. The 6221 telephone has a built in speakerphone accessed with the SPEAKER button with Mute capability the MUTE button. The 6221 telephone allows access to system features with the FLASH button and appropriate dial codes.