16 Channel Voice FXO/FXS over E1 PCM Multiplexer (Desktop Type)

This device is a desktop type and can provide 16 phone outputs. The device is based on a fully digital circuit, resulting in reliable and stable operation, low power consumption, high integration, small size, and easy installation and maintenance.

● The device can monitor the alarm status of the remote end.

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

● The voice port supports FXO and FXS, EM2/4 audio interface, where the FXO port is connected to the PBX, and the FXS port is connected to the user’s telephone.

● It supports caller ID display and reverse polarity billing functions.

● It supports mutual dialing between different sites.

● The device is able to detect whether the remote device is powered off or the E1 is disconnected when the E1 signal is lost.

● It supports 4U 17-slot card-type chassis, which can be managed by SNMP.

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

● Telephone interface is equipped with lightning protection, which meets the GB/T17626.5 (IEC61000-4-5) short-circuit current wave 8/20μs and open-circuit peak output voltage 6KV standard.

● E1 Interface

Standard: comply with protocol G.703;

Rate: 2048Kbps±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 gain: 0db

DA gain: 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)