4E1 + FE PDH Fiber Multiplexer

This device provides 4 E1 interfaces, 1 10M/100M Fast Ethernet interface (supporting line speed of 100M), and an optional digital business telephone. It offers great flexibility in application. The device is equipped with comprehensive alarm functions, ensuring stable and reliable operation. It has low power consumption, high integration, and a compact size.

● The device is designed for 19-inch 1U rack-mounted installation.

● It utilizes integrated circuits based on proprietary intellectual property.

● It features modular wide dynamic range optical detectors.

● The Ethernet interface supports speeds of 10M/100M, with full-duplex/half-duplex auto-negotiation.

● It includes Ethernet loopback prevention functionality, which prevents Ethernet network failure caused by loopback when optical loopback occurs.

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

● It offers an optional PCM digital business telephone.

● It can detect power loss or fiber interruption on the opposite end when the optical signal is lost and provides alarm indication through indicator lights.

● It allows viewing and displaying the working status of remote devices on the local end.

● It supports remote E1 interface loopback functionality for convenient line maintenance.

● It supports relay-free transmission distances ranging from 2 to 120 kilometers.

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

● Fiber

Optical ports: 1

Optical Fiber: Single/Dual fiber

Fiber Interfaces: FC/SC/ST/LC(SFP)

Wavelength: Multi-mode 850nm/1310nm, Single-mode 1310nm/1550nm

Maximum transmission distance without relay: 20~120km

Typical transmission power:

Single-mode 1310/1550nm: ≥-9dBm

Multi-mode 850nm: -18dBm

Multi-mode 1310nm: -25dBm

Receiver sensitivity range: -28dBm to -40dBm

● E1 Interface

Standard: Complies with ITU-T G.703 recommendations

Rate: 2048Kb/s±50ppm

Line Code: HDB3

E1 Impedance: 75Ω (unbalanced), 120Ω (balanced)

Jitter characteristics: Complies with ITU-T G.742, G.823 recommendations

Input attenuation range: 0 to 6dBm

● 10/100M Ethernet Interface

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

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

MAC Address Table: Can learn up to 4096 MAC addresses

Connector: RJ45, support Auto-MDIX

● Working Environment

Working temperature: -10°C ~ 60°C

Working Humidity: 5%~95 % (no condensation)

Storage temperature: -40°C ~ 80°C

Storage Humidity: 5%~95 % (no condensation)