4FXO/FXS PCM Voice Multiplexer Over E1

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.

A 4FXO/FXS PCM Voice Multiplexer Over E1 is a device that aggregates four analog voice channels onto a single digital E1 line. It’s essentially a bridge between the analog world of traditional telephone lines and the digital realm of modern telecommunications.

Breakdown of the Terms:

• 4FXO/FXS: This indicates the device has four Foreign Exchange Office (FXO) ports and four Foreign Exchange Subscriber (FXS) ports.
  • FXO: Connects to a PBX or central office.
  • FXS: Connects to an analog phone.
• PCM: Pulse Code Modulation, the standard for digitizing voice signals.
• Voice Multiplexer: Combines multiple analog voice signals into a single digital stream.
• E1: A digital transmission standard that carries 30 voice channels or one data channel.

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.