Brief introduction of USB box: 1: USB connection general line supports PnP, DSP construction absolutely. 2: adopt megger combine mode, realize megger digital record not plunk. 3: Alternating and direct Current input impedance reach 2 megohm, can use on line, broadcasting station, video, and other to record. 4: single box offer two telephone record connection which can work independent, offer press control, voice and key control record mode. ------------- -Incoming and outgoing recording info and searching -Create contacts for address list management, identify the caller identity when calling. -Provide various searching condition for unique situations -Provide polarity reversal and time control as well as condition settings for starting recording -Supports Windows 98 / NT / 2000 / XP / 2003. Supports language Chinese and English. -Support high compress rate ,save as WAV format, can directly check and play the voice file ----------------------- Phone recording system is very important in some fields in order to avoid forgetting or other unwanted things happened. The digital recording system that designed for telephone record application user. It includes hardware and software. It is very easy to install and operate conveniently with reliable and applicable function and stable performance. Application Area: 1: public safe record. 2: digital record system. 3: bank, insurance and security department, government and military organization.