30-Channel Telephone over E1 PCM Mux (1+1 Backup Protection)

This Telephone over E1 PCM mux provides 2 E1 accesses, 1+1 backup protection, and 30 telephone outputs.

The device adopts all-digital circuits, ensuring reliable and stable operation, low power consumption, high integration, small size, and easy installation and maintenance.

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

● The Telephone over E1 PCM mux provides main/backup functions with two 1+1 backup E1 interfaces. When the main E1 is interrupted, the backup E1 ensures uninterrupted service.

● The voice port supports FXO/FXS/2/4-wire EM/2/4-wire audio/magnetic phone. The FXO port connects to the PBX, while the FXS port connects to the user’s telephone.

● Supports calling number display, reverse polarity billing, and fax functions.

● The telephone interface supports mutual dialing functions between various sites.

● Can detect whether the remote end device is powered off or the E1 is not working when the E1 signal is lost.

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

● 3 loopback functions are provided: E1 local loopback (ANA), Ethernet interface remote loopback (DIG), and command to the remote End Ethernet Interface to Loopback (REM).

● Pseudo-random code testing function (PATT), which is convenient for line commissioning and can be used as a single E1-bit error tester.

● Multiple power supply options are available: AC220V, DC-48V/DC24V, etc.; it supports AC+DC; AC+AC; DC+DC and other dual power backup modes.

● The telephone interface comes with lightning protection, meeting the GB/T17626.5 (IEC61000-4-5) short-circuit current wave 8/20μs and open-circuit peak output voltage 6KV standards.

● 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: -3.5dB

2/4-wire Impedance: 600 Ohm

Return loss: 20 dB

● Power Supply

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)