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4-Port FXO/FXS over E1 PCM Multiplexer (19 Inch)

View : 341
Type : E1 PCM Multiplexer
Description :

This device offers 4-port telephony and is highly versatile in its application.


This device offers 4-port telephony and is highly versatile in its application. It features comprehensive alarm functions and operates with stability and reliability.  It has low power consumption, high integration, and compact size.


The device supports 4-channel voice access with caller ID and reverse polarity billing function.

It Supports mutual dialing between different sites.

The E1 interface complies with the G.703 recommendation, utilizing full digital clock recovery and smooth phase-locked loop technology.

The voice interface supports FXO ports and FXS ports. FXO ports connect to the PBX (Private Branch Exchange), while FXS ports connect to the user’s telephones.

It can detect power loss or E1 failure at the remote end when the E1 signal is lost, indicated by the alarm LED.

Multiple power supply options available: AC220V, DC-48V/DC24V, etc.

DC-48V/DC24V power supply features automatic polarity detection, eliminating the need to distinguish between positive and negative poles during installation.


● E1 Interface

Interface: Complies with G.703 recommendation

Speed: 2048Kb/s ±50ppm

Line Code: HDB3

Impedance: Unbalanced 75Ω / Balanced 120Ω.

Jitter Characteristics: Meets G.742, G.823 recommendations.

Input Attenuation Range: 0 to 6dBm


● FXS User Telephone Port

Ringing Voltage: 75V

Ringing Frequency: 25Hz

2-wire Input Impedance: 600Ω (off-hook)

Return Loss: 20dB


● FXO Trunk Port

Ringing Detection Voltage: 35V

Ringing Detection Frequency: 17Hz-60Hz

2-wire Input Impedance: 600Ω (off-hook)

Return Loss: 20dB


● Environmental Index

Operating Temperature: -10°C to +60°C

Storage Temperature: -40°C to +85°C

Operating Humidity: 0% to 95% (non-condensing)

MTBF: >100,000 hours


Product Name 4-Channel Telephone E1 Voice Multiplexer
Function Description Transmits 4 telephone channels (FXO/FXS/EM24) over E1 signal, rack-mounted
Port Description 4 telephone interfaces
Power Supply AC220V or DC-48V (optional)
Dimensions 483mm (Width) x 138mm (Depth) x 44mm (Height)
Weight 1kg/pcs


application of pcm mux


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