Channel:	8  Port
Compress Rate:	Hardware=2;Software=5
Module voltage resistance:	250 V
Codec:	HDB3 /AMI
Max installation for 1 PC:	5 (40 channel)
Signal-To-Noise:	≥ 30 dB
Frequency Range:	300 - 3400 Hz（±3dB）
Input Impedance:	600 Ω
Clock and Data Recorering:	CCITT Rec.G.823-1988
Frame Structure:	CCITT G.704-1988
Data Rate:	64,32,16 KBPS
Cash:	32~256 K Byte
Interface:	RJ11
Voice Distortion Rate:	≤2 %
Caller ID:	FSK¡¢DTMF
FSK Modulate Mode:	Logical 0:2200 Hz±1%
	Logical 1:1200 Hz±1%
Signal Monitor:	Signal sound,voice sound
DTMF Code:	0~9,*,#,A,B,C,D
Data Transmission:	Binary asynchronous serial
Voice Function:	WAV, VC2, VC5,AGC
Exchange:	256 CH directly
Power consumption:	≤ 15 W
Storage Temperature:	-20 ºC-70 ºC
Working Temperature:	5 ºC- 40 ºC
Humidity:	5 %- 85 %
Dimensions:	mm
Weight:	KG