Internet phone OEM / bag of charge calls to send Internet phone software

Voice and video SDK, IM instant messaging SDK selling, provide detailed interface documentation, and professional technical support; technical interface documentation may be based on its own development of voice and video related software products, as well as instant messaging products. Internet telephony software OEM, feature-rich: a direct-dial call-back, free calls, but also integration of instant messaging; I have more than one case of Internet phone software for customer references were OEM. Is launching a package of charge calls, free use of Internet phone software business, logo and interface can be customized according to customer demand.