This device for comprehensive services of broadband access. With optical fiber link, this product can provide 2 channels of 10/100Base_T data interfaces, 8 channels of 2Mb/s(E1) and 32 subscriber interfaces, and the said subscriber interfaces include FXO、FXS,2/4 wire audio interface,2/4 wire EM,RS232/V.24,magnet telephone,hot-line,V.35.etc.

*Diversified interfaces for varied services of broadband and narrowband access
*Provide 2 channels 10/100Base_T interface, 8 channels of E1 interfaces and 32 channels optional subscriber interfaces;
*The voice interface supports caller ID display
*CCB payphone application with polarity reversal;
*Perfect indications of status are available to facilitate maintenance and management
*With small size and compact appearance, and easy for installation and operation.

Optical Interface
Bit rate:155.52Mbps±20ppm
Code type:NRZ+ scrambling code
Optical Transmitting power:> -5dB ～ -17dB

E1(2Mb/s) Interface
Standard E1 interface, conforms to the recommendation of ITU-T G.703, G.704, G.712:
Bit rate:2048Kbps±50ppm
E1 Line Code :HDB3
Interface impedance:75Ω unbalanced or 120Ω balanced

Subscriber and loop interface(FXO, FXS, hot-line)
Impedance:600Ω
Insertion loss:-3±0.75dB
Frequency characteristic:300～3400Hz(-0.6～+3dB)
Weighted noise:≤63.7dBmop
Crosstalk attenuation:≥65dB
Loop impedance:≤1800Ω

2 wire/4 wire audio  interface (2 wire/ 4 wire E&M interface)
Impedance:                       200Ω+680Ω||0.1μF
4 wire AD gain:                   14 dB(adjustable)
4 wire DA gain:                    -2 dB(adjustable)
4 wire AD frequency characteristic:  -0.2 - +0.2dB
2 wire AD frequency characteristic:  -0.2 - +0.2dB
2 wire DA frequency characteristic:  -0.2 - +0.2dB
Return loss:40dB
Balance degree:70dB
Common Mode Rejection Ratio(CMRR):70dB
Power rejection ratio:30dB
Spare channel noise:≥65dB
Loop impedance:600Ω

RS232(asynchronous ) Interface
Interface type:V.24 asynchronous
Rate:0-19.2Kbps

RS232(synchronous) Interface
Interface type:V.24 asynchronous (simplex, duplex is optional)
Rate:4800bps, 9600bps,19200bps, optional
Clock mode:DCE, DTE, optional

V.35 Interface
Interface type:V.35 asynchronous
Rate:Nx64Kb/s(N =1-30)
Clock mode:DCE

10/100Base_T Interface
Interface type:10/100Base-T
Interface rate:10M/100Mbps (self-adaptive)
Transmission rate:100Mbps
19” EIA chassis: 210mm(depth)*480(width)*44mm(height)