Price	$150-$200
MOQ	1pcs
Delivery Time	1-3 working days
Brand	E-link
Place of Origin	China
Certification	ISO9001, CE, ROHS, FCC
Model Number	LNK-PDH-E4G4-2SFP Series
Packaging Details	HDMI Fiber Optic Accessories Standard Carton Packaging
Payment Terms	T/T,Western Union,MoneyGram,PayPal
Supply Ability	1000/Month

Product Details

Place of Origin	China	Maximum transmission distance	40Km
Packaging Details	HDMI Fiber Optic Accessories Standard Carton Packaging	Receiver sensitivity	-28dBm (Min)
Power supply	AC180V ~ 260V；DC –48V；DC +24V	Model Number	LNK-PDH-E4G4-2SFP Series
Fiber Type	50/125um, 62.5/125um	Supply Ability	1000/Month
Transmitting power	-9dBm (Min) ~-8dBm (Max)	Certification	ISO9001, CE, ROHS, FCC
Brand Name	E-link	Payment Terms	T/T,Western Union,MoneyGram,PayPal
Price	$150-$200	Delivery Time	1-3 working days
Minimum Order Quantity	1pcs	Interface Rate	n*64Kbps±50ppm

PDH Fiber Multiplexer 4E1 4GE 1+1 Protection 120km Gigabit

Model : LNK-PDH-E4G4-2SFP Series

Product Description & Overview

This next-generation PDH fiber optic multiplexer delivers a comprehensive telecommunications solution

by integrating four E1 interfaces with four Gigabit Ethernet ports and dual expansion slots for flexible

service configuration. Engineered for modern bandwidth-intensive applications, this carrier-grade platform

supports 1+1 fiber protection with automatic redundancy to ensure zero service interruption. The advanced

system architecture efficiently converges TDM and packet-based services over a unified fiber optic infrastructure

while maintaining strict quality of service for all traffic types.

Featuring four fully switched Gigabit Ethernet interfaces with comprehensive VLAN support and traffic

management capabilities, this robust multiplexer enables sophisticated network segmentation and bandwidth

allocation. The dual expansion interfaces provide exceptional flexibility for RS232/RS485/RS422 asynchronous

data, voice channels, E&M audio signals, switch controls, and additional Ethernet connectivity with dedicated 2M

bandwidth allocation per channel. Advanced performance monitoring and fault detection systems deliver real-time

visibility into network operations across all service interfaces.

The compact design incorporates high-density integration and advanced power management technology, achieving

exceptional energy efficiency in a space-optimized footprint. With hot-swappable module support and extended

environmental tolerance, this solution is ideal for 5G mobile backhaul, enterprise network convergence, and mission

-critical industrial communications. Enhanced synchronization features and comprehensive alarm reporting guarantee

reliable operation in the most demanding network environments, establishing this PDH multiplexer as the premier

choice for modern multi-service transport applications requiring robust E1 and Gigabit Ethernet transmission over

protected fiber optic infrastructure.

Key Features Bullets

Proprietary Core Technology
Self-developed IC with modular wide dynamic optical detection
Carrier-Grade Protection
1+1 dual fiber redundancy with automatic protection switching
Gigabit Ethernet Capacity
4-port 10/100/1000M switch with VLAN and logical isolation
Standards-Compliant E1 Interface
G.703 compliance with digital clock recovery technology
Flexible Service Expansion
Dual expansion slots for data/voice/switch signals
Intelligent Network Management
Remote loopback control and real-time status monitoring
Extended Optical Transmission
2-120km reach with optical power monitoring
Universal Power Supply
Multi-voltage input with polarity-free protection
Comprehensive Alarm System
Fiber break detection with visual LED indication

Technical Specifications & Indexes

Parameter	Specification
Fiber
Multi-mode Fiber
Fiber Type	50/125um, 62.5/125um
Maximum transmission distance	5Km @ 62.5 / 125um single mode fiber, attenuation (3dbm/km)Wave Length: 820nm
Transmitting power	-12dBm (Min) ~-9dBm (Max)
Receiver sensitivity	-28dBm (Min)
Link budget	16dBm
Single-mode Fiber
Fiber Type	8/125um, 9/125um
Maximum transmission distance	40Km
Transmission distance	40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)
Wave Length	1310nm
Transmitting power	-9dBm (Min) ~-8dBm (Max)
Receiver sensitivity	-27dBm (Min)
Link budget	18dBm
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
Ethernet Interface (10/100M)
Interface rate	10/100/1000Mbps, half/full duplex auto-negotiation
Interface Standard	Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)
MAC Address Capability	4096
Connector	RJ45, support Auto-MDIX
Power
Power supply	AC180V ~ 260V；DC –48V；DC +24V
Power consumption	≤10W
Dimension
Product size	19 inch 1U 485X138X44mm(WXDXH)
Simple packaging	522X198X82mm(WXDXH)
Piece weight	3KG
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)

Application Scenarios