4Ch POTS(FXO/FXS)Telephone over Fiber Mux
4Ch POTS Telephone over Fiber Overview
The E-Link 4-Channel POTS-to-Fibre Converter provides high-density transmission for up to
four traditional telephone lines via a single optical fibre, thereby maximising infrastructure efficiency
and significantly reducing cabling costs. This robust Voice over Fibre solution uses standard
RJ-11 connectors to integrate easily and reliably with existing copper wiring. The system operates
using matched FXO and FXS units: the FXO interface connects to central office (PSTN)
or PBX trunk lines and has full ringing voltage detection capability, while the reciprocal FXS unit
connects directly to end-user telephone devices and provides complete dial tone
and calling functions. Designed for exceptional clarity and immunity to electromagnetic interference,
this extender is ideal for scaling legacy voice services across campuses, remote facilities
and secure industrial applications.
4Ch POTS Telephone over Fiber Features
- Standard RJ11 telephone interface for easy connection
- 4 voice channels with support for Caller ID and Fax services
- Dual voice port design (O port & S port):
- O port connects to the switch
- S port connects to the user’s telephone
- Compatible with FXO/FXS standard telephones
- Supports point-to-point, cascaded, and distributed networking without SNR degradation
- Fiber optic power link with LED indicators for system status monitoring
- Industrial-grade modular design for flexible deployment, reliability, and durability
4Ch POTS Telephone over Fiber Technical Indexes
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Product Name
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4 channel telephone over fiber converter
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Product Model
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LNK-PCM04 Series
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Description
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FXO/FXS Ordinary telephone
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Telephone Ports
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4 telephone port RJ11 port
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Switch Terminal
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Ordinary telephone or PBX, PBX (PBX),
public telephone outside the PSTN
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FXS
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Ringing voltage: 75V, ringing frequency: 25HZ
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FXO
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Second line input impedance:600Ω (hook),
return loss: 40db,
ring detection voltage:35V
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Ring detection frequency
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17HZ-60HZ,
second-line input impedance: 600Ω(hook),
return loss: 40 db
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Broadband Voice
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8KHZ
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Connection
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Point to point,
telephone to telephone,
telephone to switch
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Code
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PCM code
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Fiber Ports
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FC/UPC
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Ethernet Ports (optional)
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Interface rate: 10/100 Mbps, half/full duplex auto-negotiation
Interface Standard: Compatible with IEEE 402.3, IEEE 402.1Q (VLAN)
MAC Address Capability: 4096
Connector: RJ45, support Auto-MDIX
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Transmission distance
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Single-mode single fiber 20KM
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Environmental Specifications
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Operating Temperature: -35°～ 75°C
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Storage Temperature: -40°～ 45°C
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Operating Humidity: 0%～95%, non-condensing
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Total power consumption
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2.5w(Input:DC12V 1A)
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Power supply
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External power supply,
Input:AC110-40V 50/60Hz,
Output:12V 1A
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4Ch POTS Telephone over Fiber Ordering Information
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Model
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Description
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LNK-PCM04
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Analog Telephone to F/O Converter: 4-Ch Telephone lines (FXO & FXS), FC, Single Mode(9/125µm), 20KM, DC12V, used by pairs
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LNK-PCM04-E
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Analog Telephone to F/O Converter: 4-Ch Telephone lines (FXO & FXS) + 1-Ch 100M Ethernet, FC, Single Mode(9/125µm), 20KM, DC12V, used by pairs
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4Ch POTS Telephone over Fiber Application
After-Sales and Warranty Policy
It is composed of online customer service and telephone customer service, providing product consultation,
remote technical support, maintenance and acceptance services.
Service Policy: Three-month replacement and three-year warranty.
Replacement: Within three months of purchasing a series of products, after testing the product failure
by technicians and man-made damage caused by non-natural disasters, the purchaser can directly
go to the purchasing point to replace the same type of products.Or a product of comparable performance.
If there is no trouble in product testing, the original sample will be returned.
Warranty: Man-made damage caused by non-natural disasters, our company's free warranty period is 1 year.
[The following circumstances do not fall within the scope of replacement and free maintenance]
1.Damage caused by operation and maintenance not in accordance with the instructions in the product manual.
2.Damage caused by human factors, such as inappropriate voltage input, water intake and breakage.
3.Damage to products caused by natural disasters, such as lightning, earthquakes, fires, etc.
3.Unauthorized alteration of the inherent settings or repair without the company's permission.
4.Products beyond the scope of free maintenance.
5.Damage caused by transportation, loading and unloading during repairs sent by customers.
6.The product bar code or model on the product warranty card does not conform to the product itself.
7.Failure or damage caused by other non-product problems such as design, technology, manufacturing and quality.
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