Openvox, China. We are the first VOIP CARDS? manufacture in China and our market penetrates all over the world. All our hardware products are ready to be used with leading open source telephony projects including Asterisk. End user can build advanced but affordable telephony systems themselves.
With a group of experienced and well-educated people who are engaged in R&D, and the reliable warranty policy as well as our considerate technical supports aftersale our products enjoy a good fame both in quality and price, if you are trying to find a comfortable partner in cost-effective and well-functional Voip interface cards, Openvox will save you money as well as energy.

Please click the following link for more details about Openvox when necessary:
http://www.openvox.cn