主機(jī)接口
· 總線: Rev. 2.1 of PCI bus specification
· 總線速度: 最快 33 MHz
· 共享內(nèi)存: 256 KB dual port static memory
· Address and interrupts configured automatically by PnP BIOS or PnP OS
· 語(yǔ)音卡ID: 由每片語(yǔ)音卡上的Rotary switch定義唯一的ID
電話接口
· Line interface: 回路啟動(dòng)
· 連接頭: 四個(gè) RJ-14 接口
· Return loss: 20 dB min (300 to 3300 Hz at 600 Ohms impedance)
· 來(lái)電顯示: International Caller ID capability via on-hook audio path
Audio 訊號(hào)與接口
· Audio I/O 接頭: 3.5mm audio in & out jacks
· 自動(dòng)增益控制(Automatic gain control)
· 靜音檢測(cè): programmable (nominal: -44 dBm)
· Call progress monitoring: standard and custom frequency based
頻率檢測(cè)(DTMF Tone Detection)
· DTMF digits: 0 to 9, *, #, A, B, C & D
· Dynamic range: -36 dBm to -3 dBm per tone
· Tone duration: 40 ms (minimum)
· Acceptable twist: 10 dB
復(fù)頻撥號(hào)(Tone Dialing)
· DTMF digits: 0 to 9, *, #, A, B, C & D
· Transmit level: normal at -6.0dBm (high),
· -8.0dBm (low), parameters programmable
· Frequency variation: < 1%
V-LINK32 SDK
· FOR Windows NT Kernel
· FOR Visual C++ ； Borland C++ ； Visual Basic ； Borland Delphi
