Business Telephone Sales sells used and refurbished Northern Telecom Telephone Systems. Northern Telecom can also be referred to as Nortel, Norstar, Nortel Meridian, and Norstar Meridian. We have many Nortel accessories for these systems not listed on the website such as Fast Rads, voicemails, ATA, ATA II, and many other misc. equipment. If you do not see what you are looking for, please call 800-396-9699.