| 主机接口 |
总线: Rev. 2.1 of PCI bus specification
总线速度: 最快 33 MHz
共享内存: 256 KB dual port static memory
Address and interrupts configured automatically by PnP BIOS or PnP OS
语音卡ID: 由每片语音卡上的Rotary switch定义唯一的ID
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| 电话接口 |
Line interface: 回路启动
连接头: 四个 RJ-14 接口
Return loss: 20 dB min (300 to 3300 Hz at 600 Ohms impedance)
来电显示: International Caller ID capability via on-hook audio path
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| Audio 讯号与接口 |
Audio I/O 接头: 3.5mm audio in & out jacks
自动增益控制(Automatic gain control)
静音检测: programmable (nominal: -44 dBm)
Call progress monitoring: standard and custom frequency based
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声音编码
Audio Encoding |
取样频率: 8KHz
32 Kbps OKI ADPCM
64 Kbps μ-law PCM
64 Kbps windows 8-bit PCM
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频率检测
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
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复频拨号
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%
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| V-LINK32 SDK |
FOR Windows NT Kernel
FOR Visual C++ ； Borland C++ ； Visual Basic ； Borland Delphi
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| 电力 |
+5V @500mA
+3.3V@500mA
+12V @200mA
-12V @200mA
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| 认证 |
Telephone network: FCC Part 68
EMI: FCC Part 15； Class B
BSMI / 台湾
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| 环境规格 |
储存温度：-10 to 60 C
操作温度: 0 to 50 C (32 to 122 F)
湿度: 10 to 80%, non-condensing
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