General Inquiries Global, other than China VTEL Products Corporation 108 Wild Basin Road Suite 245 Austin, TX 78746 Sales: 512-535-1948 Sales e-mail: richard_ford@vtel.com Administration: 512-535-1988 Technical Support: support@vtel.com

General Inquiries VTEL China Room 1107-1108 3C, Incubator Building Shangdi West Street Beijing, China 100094 Sales: 01084195188 Sales e-mail: hansen_zhang@vtel.com.cn Administration: 01084195188 Technical Support: support@vtel.com