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Hi all, Has anyone had any experience getting asterisk to work with legacy phones? I have been trying to get some of our exisiting Plessey PKS2 (Masterline) Keystation phones to work with asterisk. They are 4 wire extensions (2 for voice and 2 for data) I have connected a test phone to the asterisk server via a digium 400tdm and it kinda works in that if I lift the receiver I hear dialtone and if I call that extension, although th...