... ,recording all incoming and outgoing call descriptionThe 1 lines recorder box is strong recording funtion,including inbound number, exhale number, ... by YX Co.,LTD,with FSK and DTMF.And the recorder support compressed format,just like 64kbs,8kbs.It is benefit ... less hardware, and have senior management functions, anytime retrieval, any time play, very easy to storage, compress, move, delete, backup,5 ...