Business Telephone Sales Nortel Phones and Nortel Phone Systems for the lowest prices. There are many Nortel Phones, Business Telephone Sales only sells the Nortel 7000 and 2000 series phones (such as M7310, T7316, M2616). If you have a phone you do not see on this site it may not work or be compatible with your current set up as Northern Telecom made many model phones. Business Telephone does not sell every make and model of Nortel phones, just the ones listed. This can be confusing since there are so many Nortel phones out there. Please call with any compatiblity issues or questions so we can make sure you get what you need for your Nortel Phone System, 800-396-9699.