16Voice + 4FE + 4*RS232/422/485 over E1 PCM Multiplexer

The device provides one E1 interface, 16 telephone outputs, and an optional 4-channel RS232/422/485 with 4-channel Ethernet. It is designed with a fully digital circuit, which has 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 and adopts all-digital clock recovery and smooth phase-locked loop technology.

● Voice port supports FXO/FXS/2&4-wire EM/2&4-wire audio/magnetic telephone interfaces. The FXO port is connected to the PBX, and the FXS port is connected to the user’s telephone.

● It provides four expansion interfaces that can expand 1-4 asynchronous data such as RS232/RS485/RS422/TTL, or 1-8 dry contact signals.

● Ethernet interface rate is 10/100M, full/half duplex fully adaptive, and supports VLAN partitioning.

● Each Ethernet ports support Auto-MDIX (cross/straight cable adaptation).

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

● It supports mutual dialing function between different sites.

● The device can detect whether the remote device is powered off or the E1 is not connected when the E1 signal is lost.

● It provides two clock modes: E1 master clock and E1 line clock.

● It provides three loopback functions: ANA (local loopback), DIG (Ethernet interface loopback to the remote end), and REM (remote Ethernet interface loopback to the local end).

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

● E1 can support N*64k (N=1-32) rates, that is, the rate can be adjusted from 64K to 2048K.

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

● The telephone interface is equipped with lightning protection, which can withstand short-circuit current wave 10/700μs and open-circuit peak output voltage 6KV, in accordance with the GB/T17626.5 (IEC61000-4-5) standard.

● 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

● Ethernet Interface (10/100M)

Rate: 10/100 Mbps, half/full duplex auto-negotiation

Standard: Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)

MAC Address Table Capacity: 4096

Connector: RJ45, support Auto-MDIX

● 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)

typical solution 1——- Ordinary voice Access

typical solution 2——- Hotline Access