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Voice Over E1

30Voice over E1(1+1)for redundancy PCM MUX

Overview
The device is to provide two E1 access 1 +1 backup protection 30 phone output .part of the device is whole digital circuit .the device is reliable low power consumption high integration small size Easy to install and maintain. Many telecom operators customers rent E1 line then they can use the device to open 30 telephone by the Rented E1 line so that the headquarters and the branch can communicate by phone freely.
Features
◆ based on independent intellectual property rights of integrated circuits;
◆ E1 interface in line with G.703 recommendations the use of all-digital clock recovery and smooth phase-locked technology;
◆ Provide two 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 / two four-line EM / two-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;
◆ Support CONSOLE management for option;
◆ Can detect E1 signal is lost when the end of the device shutdown or E1 unreasonable;
◆ Two clock modes are available: E1 master clock E1 line clock;
◆ (EA) Ethernet interface to 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.
Parameters
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
Two-line Impedance: 600 Ohm (pick up)
Return loss: 40 dB
FXO Switch Interface
Ring detect voltage: 35V
Ring detection frequency: 17HZ-60HZ
Two-line Impedance: 600 Ohm (pick up)
Return loss: 40 dB
EM 2/4 Line
AD: 0dB
DA: -3.5dB
Two/Four-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
30Voice over E1(1+1)for redundancy PCM MUX
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