Unlocking the DLink DPH-C160S


A few weeks back I picked up a couple of Engin 221 VOIP DECT phones (a rebadged DLink DPH-C160S) from Ebay, with the hopes of being able to use them with my Asterisk server. As it turns out, the Engin ship these units with crippled firmware, so you can only reconfigure the IP settings, but not the SIP settings, rendering it useless for anything except talking to Engin. It won't even work with their VOIPer accounts, nor are they willing to unlock the device.