4FXO/FXS PCM Voice Multiplexer Over E1

This model provides 1-4channels of voice signal through E1 channel to realize extension of telephone line through E1. E1 signal can be transmitted by fiber multiplexer.
Description
This model provides 1-4channels of voice signal through E1 channel to realize extension of telephone line through E1. E1 signal can be transmitted by fiber multiplexer.
Features
■Monitoring remote device from local device (2 row indicator LED, upper indicates local, lower indicates remote）
■Based on self copyright IC
■Provides 1-4 channels of voice signal and supports call 
■indication and opposite pole charging
■Supports function of signal transmission among all end points
■Voice port supports O port and S port, O port connecting with exchange and S port with user’s telephone

Parameter
E1 interface
Standard:conforms to G.703 standard.
Coding:HDB3
Interface rate:2.048Mbps±50ppm
Impedance:75Ω (unbalance)/ 120Ω (balance)
Connector:BNC (75Ω)/ RJ45 (120Ω)
Jitter Performance: according to G.742 and G.823
Clock:internal clock, line clock.
FXS Telephone Port
Ring voltage:75V
Ring frequency:25HZ
2 line input impedance:600Ω (hanging off)
Wastage:40db
FXO Exchange Port
Ring detecting voltage:35V
Ring detecting frequency:17HZ-60HZ
2 line input impedance:600Ω (hanging off)
Wastage:40db
 
Dimension
Desktop type:483（W）×138（D）×44（H）mm
Power supply

AC220V：input voltage:  AC220V±20%，50HZ
DC-48V：voltage error range: -36V～-72V    
Operating Conditions
Voltage:AC180V-260V, DC-48V, DC+24V
Power Consumption:
Working temperature:0°C~50°C
Storage temperature:-40°C~+70°C
Humidity:95%
  No causticity and solvent, dust free, and no strong magnetic interference.