Mode: ZS-4204 TVRS Basic Functions: 1) Supports Windows 2000/XP/2003 2) Software access to PC. 3) There is PCI card with 4 channels can be plugged inside PC 4) Hardware compress (rate=8) chips added to board, get better voice quality, save a lot of HDD space. 5) Card can detect line voltage, so it's adapted to any line condition. 6) New module installation, more steady on board. 7) Can record and monitor 4 analog ports simultaneously, 8) Can be used on ordinary telephone lines (PSTN), ISDN modem draw lines, extension lines, conference telephones, interphones, door phones 9) Support DTMF/FSK incoming CallerID and Incoming CallerID Popup. 10) 270 Hours /G HDD. 11) Supports three modes of recording (audio, key and phone) Typical Usages: [1] Call center,Help Desk,Hospital,Fire station [2] Recording conferences calls [3] Recording instruction,Clarification of quantities and Specifications [4] Protection of staff from abusive/difficult customers [5] Monitoring nuisance callers [6] Monitoring customer service