Product Overview

The  is a high-density 64-channel voice over fiber multiplexer that integrates 64 FXS/FXO telephone interfaces and 2 fast Ethernet (10/100M) ports over a single optical fiber link. Designed for point-to-point transmission, this rack-mounted fiber optic telephone multiplexer is widely used in telecom carriers, government networks, emergency communication, and enterprise voice-data integration systems.

This unit supports long-distance optical transmission (up to 120km over single-mode fiber), enabling reliable and interference-free delivery of analog voice and Ethernet data in various challenging environments.

Key Features

• Supports 64 telephone channels (FXS/FXO), with caller ID, reverse polarity billing, and fax compatibility.

• FXS ports connect directly to analog phones; FXO ports interface with PBX systems.

• Each site supports mutual numbering assignment for simplified dialing configuration.

• 2 × 10/100Mbps Ethernet ports with full/half duplex auto-negotiation and Auto-MDIX (crossover/straight-through cable auto-adaptability).

• Ethernet throughput reaches line-speed 100Mbps, with zero-packet loss in throughput tests.

• Compatible with VLAN (IEEE 802.1Q) and Energy-Efficient Ethernet (IEEE 802.3az).

• Modular power options: AC 220V, DC -48V, or DC +24V (selectable).

• Lightning protection on all voice ports (complies with IEC61000-4-5, 6kV surge).

• Fully digital circuit design, low power (<5W), compact form factor for easy installation and maintenance.

Technical Specifications

➤ Fiber Optic Transmission

• Fiber Ports: 1

• Fiber Types: Single-mode / Multi-mode

• Connector Types: FC / SC / ST / LC (SFP optional)

• Wavelengths:

• Multi-mode: 850nm / 1310nm

• Single-mode: 1310nm / 1550nm

• Transmission Distance:

• Multi-mode: 0–2km

• Single-mode: 20–120km

• Transmit Power:

• SM 1310/1550nm: ≥ -9dBm

• MM 850nm: -18dBm

• MM 1310nm: -25dBm

• Receiver Sensitivity: -28dBm to -40dBm

➤ Voice Interface (FXS/FXO)

• Ring Voltage: 75V (FXS)

• Ring Frequency: 25Hz

• Impedance: 600Ω

• Return Loss: ≥ 20dB

• FXO Ring Detection: 35V @ 17–60Hz

➤ Ethernet Interface

• Ports: 2 × 10/100Mbps RJ45

• Protocols: IEEE 802.3az, IEEE 802.1Q VLAN

• Duplex Mode: Full/Half Auto-Negotiation

• MAC Address Table: 4096 entries

• Auto-MDIX support

➤ Power & Mechanical

• Power Supply Options:

• AC: 180–260V

• DC: -48V or +24V

• Power Consumption: ≤ 5W

• Dimensions: 485mm × 138mm × 45mm (19-inch 1U Rackmount)

➤ Environmental

• Operating Temperature: -10°C ~ +60°C

• Storage Temperature: -40°C ~ +85°C

• Humidity: 0% ~ 95% (non-condensing)

• MTBF: > 100,000 hours