open ipphone客户端3.7.1,2010-2-1最新发布，需opal3.8及ptlib3.8库，支持多平台运行多种压缩标准-open ipphone client support G.723, G.711, multiple compression standard G.729-open ipphone latest release of the client 3.7.1,2010-2-1 take opal3.8 and ptlib3.8 library, support for m