hi dears friend ....
i wanted to make VOIP network in my place ,i.e i have 5 SIM phone card in my place , i whanted the person outside of this place when need to call to this place pass the call through the voip device and can record the call and split all call to this phone like support department ,
must convert the call from GSM or CDMA SIM card to ip phone
how can do that and what is the right device to do that ????