Hi, I have my travel agent in one of the crowded area in one of the hotel. The phone is provided by the hotel. I know that for digital phone, they are using NEC Dterm Series. I know nothing about NEC PBX. My agent has one of the basic phone. They call it analog phone and i check it yesterday, it has 2 line but it comes from 1 cable. I dont think it is possible for analog phone to have 2 lines from 1 source/cable. What kind of phone/system is this. I need to replace the phone because the receiver is very bad.