16Voice over E1 PCM Multiplexer

This equipment is to provide E1 access, 16 channel voice outputs, Equipment electrical parts for the whole digital circuits, machine reliability, stability, low power consumption, high integration, small size, easy installation, and maintenance. Many customers are telecommunications operators E1 leased lines used in computer networking, this equipment can be rented at the E1 line to open a few road phone, and you can make free calls between headquarters and branch offices.

● Based on proprietary integrated circuits;

● alarm status can be monitored on the end;

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

● Voice port supports FXO and FXS port, EM2/4 wire interface, Magnet phone, FXO port docking with program-controlled switchboard, FXS port connected to the user’s telephone

● 1-16*voice access, support caller ID function and reverse polarity billing functions;

● Support Telephone Number mutual function of each site;

● E1 signal can be detected as a barrier to the end device is lost or shut E1;

● provide two kinds of clock ways: E1 master clock, E1 line clock;

● provides three kinds of loopback: E1 local loopback (ANA), the Ethernet interface to the remote loopback (DIG), command peer Ethernet interface to the local loop (REM);

● There are pseudo-random code test functions (PATT), to facilitate the opening line, which can be when one of E1 BERT to use;

● E1 can support N * 64k (N = 1-32) rate, that rate is adjustable from 64K-2048K;

● Telephone interface with lightning protection, lightning reached IEC61000-4-5Short circuit current wave 8 / 20μs, open-peak output voltage 6KV standards.

● multiple power mode options: AC220V, DC-48V / DC24V, etc;

• 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: 0dB

Two/Four-line 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)