60-Channel Voice over E1 PCM Multiplexer

This product is a 19-inch 1U rack-mounted device that provides 60 telephone and 2E1 transmission interfaces, making it very flexible in its applications. The device is equipped with all-digital circuits, ensuring reliable and stable operation, low power consumption, high integration, small size, and easy installation and maintenance.

● E1 interface complies with G.703 recommendations, using all-digital clock recovery and smooth phase-locked loop technology.

● Voice port supports FXO/FXS/2-wire audio/magnetic interface. The FXO port is connected to a PBX, and the FXS port is connected to the user’s telephone.

● It supports caller ID display, reverse polarity billing, and fax function.

● It supports mutual dialing between different sites.

● Multiple power supply options available, including AC220V, DC-48V/DC+24V, and others. It Supports dual power backup modes such as AC+DC, AC+AC, and DC+DC.

● The telephone interface features lightning protection and can withstand lightning strikes up to GB/T17626.5 (IEC61000-4-5) short-circuit current wave 10/700μs, with open-circuit peak output voltage standards of up to 6KV.

● E1 Interface

Standard: comply with protocol G.703;

Rate: n*64Kbps±50ppm;

Line Code: HDB3;

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

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

Input Port Attenuation Allowed: 0~6dBm

● FXS Phone Port

Ring voltage: 75V

Ring frequency: 25HZ

2-wire Impedance: 600 Ohm (off-hook)

Return loss: 40 dB

● FXO Trunk Port

Ring detection voltage: 35V

Ring detection frequency: 17HZ-60HZ

2-wire Impedance: 600 Ohm (off-hook)

Return loss: 40 dB

● EM 2/4 Wire

AD: 0dB

DA: 0dB

2/4-wire Impedance: 600 Ohm

Return loss: 20 dB

● 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)