4-Line Computer Telephony Interface

Key Features:
- Record incoming/outgoing call no., time & date 
- Live line operating status display
- Flexible system parameter programming
- Standalone 4-line under one unit
- Equipped with 16 units up to 64 lines under one PC
- Specified inbound call ringer control
- Unallowed inbound & outbound call number  setting
- Telephone real-time status control
- Support external billing info device display 
- Compatible with ETSI/Bellcore FSK & DTMF Caller ID 
- Simulate FSK & DTMF CID signal for testing
- Additional I/O port control available for option
- HID USB data transmission without USB driver
- Busy tone detection, right & left channel voice control
- Fully open SDK for application development

DEMO Program Benefits:
. Incoming Call Number Record

. Outgoing Call Number Record

. Current Line Status Display

. Telephone Operating Status Display

. Talking Start & Stop Duration Record

. Line Polarity Reversal Detection

. Ringing Detection

. Line Talking Detection

. LED Indicator for Data Transmission