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30Voice over E1 PCM Mux | 1+1 Backup Protection

View : 397
Type : Voice over E1
Description :

The device provides 2 E1 access 1 +1 backup protection, 30 phone outputs, and part of the device is a whole digital circuit.


The device provides 2 E1 access 1 +1 backup protection, 30 phone outputs, and part of the device is a whole digital circuit. The device is reliable, it has low power consumption, high integration, and a small size. It is easy to install and maintain. Many telecom operators’ customers rent the E1 line, then they can use this device to open 30 telephone on the Rented E1 line so that the headquarters and the branch can communicate by phone freely.


Based on independent intellectual property rights of integrated circuits;

E1 interface in line with G.703 recommendations for the use of all-digital clock recovery and smooth phase-locked technology;

Provide 2 1 + 1 backup E1 interface the main backup function the main E1 disconnect spare E1 work to ensure that the business is not interrupted;

Voice port to support FXO/FXS/2&4-line EM/2-wire audio/magnet phone interface FXO port and program-controlled switches docking FXS port and the user’s telephone connected;

1-30 voice access support caller ID/reverse polarity billing/fax function;

Telephone interface to support the two sides of the site of the number of features;

Can detect E1 signal is lost when the end of the device shutdown or E1 is unreasonable;

Two clock modes are available: E1 master clock E1 line clock;

(EA) Ethernet interface to a remote loopback (DIG) and command the remote interface to the local loopback (REM) of the Ethernet interface;

Pseudo-random code test function (PATT) easy to open the line that can be used as an E1 error meter to use;

A variety of power supply options: AC220V DC-48V / DC24V etc .; support AC + DC; AC + AC; DC + DC and other dual power backup mode;

Telephone interface with lightning protection lightning protection to GB / T17626.5 (IEC61000-4-5) short-circuit current wave 10/700μs open peak output voltage 6KV standard.


● E1 Interface

Interface Standard: comply with protocol G.703;
Interface Rate: n*64Kbps±50ppm;
Interface Code: HDB3;

E1 Impedance: 75Ω (unbalance) 120Ω (balance);

Jitter tolerance: In accord with protocol G.742 and G.823

Allowed Attenuation: 0~6dBm


● FXS Phone Interface

Ring voltage: 75V

Ring frequency: 25HZ

2-line Impedance: 600 Ohm (pick up)

Return loss: 40 dB


● FXO Switch Interface

Ring detect voltage: 35V

Ring detection frequency: 17HZ-60HZ

2-line Impedance: 600 Ohm (pick up)

Return loss: 40 dB


● EM 2/4 Line

AD: 0dB

DA: -3.5dB

2/4-line Impedance: 600 Ohm

Return loss: 20 dB


● Power

Power supply: AC180V ~ 260V;DC –48V;DC +24V

Power consumption: ≤10W


● Dimension          

Product Size: 19inch  485X200X45mm(WXDXH)

Simple packaging: 9inch  522X198X82mm(WXDXH)

Piece Weight: 2.4KG


● Working Environment

Working temperature: -10°C ~ 50°C
Working Humidity: 5%~95 % (no condensation)

Storage temperature: -40°C ~ 80°C
Storage Humidity: 5%~95 % (no condensation)


application of Voice fxofxs over E1 PCM Mux

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