Business Telephone Sales sells Avaya Magix Phones and Accessories at the Lowest Prices. The Magix 4412D+ (model 108199050) is a very popular phone which offers speakerphone, intercom, transfer, and hold. The 4412 phones are used in call centers and in other office environments. The Avaya 4412D phone has a LCD display to show time, date, and duration of call. The 4412A01A-003 phone allows for headsets or handsets. At times Business Telephone Sales also has the Magix system and phone cards, if you do not see what you need please give us a call at 800-396-9699. All Magix phones are refurbished and come with a handset, new handset cord, new line cord, and all necessary labels.