Is Splitter different each country?
Each country has the different Characteristic Impedance of PSTN. For example, we can not use Korean Splitter in Japan. Because Korean Characteristic Impedance is 600 and Japan Characteristic Impedance is 150+(72nF//(830+1uF)). Of course, we can use it in any other countries which has the same Characteristic Impedance. ITU-T standardizes four types of Characteristic Impedance, G.992.1(Full DMT) type 1 Zcomplex(n) for Europe, type 2 for North America, type 3 for ISDN and type 4 for Japan. Namely, the North America type is 600 and 900, the Europe type is Complex(1):270+(750//150nF), Complex(2) : 320+(1050//230nF), Complex(3) : 220+(820//115nF) and 600.
