This is a method of providing a phone service to people over the Internet. This type of service moves the traditional phone switch off site and allows more than one company to use a particular switch.
Gnex Technology Co.,LTD are the company with many years experience on voip hard developing & producing.Our products line is mainly from VOIP Phone,Voip Gateway,VOIP USB Phone,PABX,IPPBX.GSM Gateway,GSM E1 Gateway,GSM VOIP Gateway,E1 Media Gateway and ect.
Read more