Buy it Now Replacement Power Supply for Nortel Centrex M5208 M5316 Phones NEW All of the M5000 Series Phones requiring a power Supply use the same Power Supply Nortel M5000 Centrex Power Supply Specs; Input: 120V, 60HZ, 16W25; Output: 16VAC, 375mA Method of Payment is PayPal, Visa/Master Card, American Express.$ 4 Shipping and Handling (Ground) anywhere in the Continental US. For additional information on quantity discounts ask for Roy at 877-381-0055.