Mar 9, 2005 #1 hm_fa_da Full Member level 5 Joined Sep 16, 2003 Messages 287 Helped 10 Reputation 20 Reaction score 4 Trophy points 1,298 Activity points 3,217 hi all ; can you help me find a complete document on how to use telephone line ?? i mean i want to design a public payphone and want to know more about answer pulse , during call pulse , and how much max mA can i use from line power ?.... thanks ...
hi all ; can you help me find a complete document on how to use telephone line ?? i mean i want to design a public payphone and want to know more about answer pulse , during call pulse , and how much max mA can i use from line power ?.... thanks ...