
Extend POTS Telephone Service Over Singlemode Fiber
The PK8S POTS-to-fiber converter installation kit provides a practical solution for extending analog telephone communications over singlemode fiber. It allows POTS telephone service to be transported between locations without relying on long copper telephone runs.
The PK8S is specified for singlemode duplex fiber transmission up to 20 km, using the appropriate length of fiber optic cable.
FXO and FXS POTS Connectivity
The PK8S uses an FXO/FXS configuration for connecting POTS telephone equipment across the fiber link.
- FXO: Exchange/PBX side
- FXS: Subscriber/telephone side
- Function: POTS
- Fiber: Singlemode
- Fiber configuration: Duplex
The selector guide specifies one FXO and one FXS interface for the PK8S.
Long-Distance Singlemode Fiber Transmission
Singlemode fiber allows the PK8S to support longer-distance POTS communications. The specified distance capability is up to 20 km over singlemode duplex fiber when the appropriate fiber optic cable is used.
All VERSITRON units in this POTS converter family use LC optical connectors.
Standalone POTS Fiber Installation
The PK8S is designed for standalone installation, making it suitable for applications where a rack-mounted chassis is not required.
For rack-mounted installations, the corresponding PK8S-RM provides the same POTS, singlemode duplex, and 20 km configuration in a rack-mount format.
POTS to Fiber Applications
The PK8S can be used for:
- PBX-to-remote telephone connections
- Building-to-building telephone links
- Long-distance POTS extensions
- Remote subscriber connections
- Commercial and industrial facilities
- Campus communications
- Fiber-based telephone infrastructure
Technical Specifications
| Specification | PK8S |
|---|---|
| Function | POTS |
| FXO | 1 |
| FXS | 1 |
| Fiber Type | Singlemode |
| Fiber Configuration | Duplex |
| Maximum Distance | 20 km |
| Installation | Standalone |
| Optical Connector | LC |
These specifications are based on the VERSITRON 8-Channel POTS 2-Wire FXO/FXS to Fiber Converter Installation Kits Selector Guide.
Why Choose the VERSITRON PK8S?
The PK8S combines POTS telephone connectivity, FXO/FXS interfaces, singlemode fiber transmission, and standalone installation in a complete fiber optic telephone solution. Its 20 km transmission capability provides a practical option for extending analog telephone service across longer fiber links.
VERSITRON — Safeguarding Communications Since 1958
VERSITRON has been providing fiber optic communication solutions since 1958. Our product portfolio includes fiber optic solutions for voice, video, data, and network communications.
For assistance selecting the appropriate POTS-to-fiber converter, fiber type, or installation configuration, contact VERSITRON for technical support and application guidance.
Technical Specifications of PK8S FXO/FXS to Fiber Multiplexer Installation Kit:
Power Requirements
12VDC, 2.0Amp
Connector (Tip & Ring)
RJ-11, 2-Wire Twisted Pair
Fiber Interface Connector
LC
Installation
Standalone
Fiber Cable
Singlemode: 9/125 (Duplex)
Link Margin
Singlemode: 19dBm
Audio Signal
Analog, 300Hz to 3.4KHz
Idle Channel Noise
-65dBm
Single Frequency Distortion
-46dBm
2nd Harmonic Distortion
-55dBm
Talk Battery
44 to 52VDC
Loop Current
40mA max. (off hook)
Ring Signal
92V peak (max), 15 to 67Hz
Line Impedance
600Ω
Operating Temperature
0° to 50°C (32° to 122°F)
Storage Temperature
-40° to 70°C (-40° to 158°F)
Humidity
Up to 95% relative humidity (non-condensing)
Altitude
Up to 10,000 ft
Each PK8S FXO/FXS to Fiber Multiplexer Installation Kit Includes:
- FXO Unit
- FXS Unit
- External Power Supplies (90-240VAC)
- 100 Meters (328 ft) of Singlemode Cable - Duplex
As a complete package, you get everything you need in a plug & play solution for your phone-to-fiber requirements and you receive a Lifetime Warranty from a trusted manufacturer since 1958! Contact us for assistance by calling (1-800-537-2296) or opening a chat. We are here to help!
| Model | FXO (Exchange) |
FXS (Subscriber) |
Function | Fiber | Installation | Distance Capability* | RFQ |
| PK8S | 1 | 1 | POTS | SM Duplex |
Standalone | 20 km | |
| PK8S-RM | 1 | 1 | POTS | SM Duplex |
Rack-Mount | 20 km | |
| PKR8S | - | 2 | Ring Down | SM Duplex |
Standalone | 20 km | |
| PKR8S-RM | - | 2 | Ring Down | SM Duplex |
Rack-Mount | 20 km |
Additional Installation Kits Are Available For:
Key Features of PK8S FXO/FXS to Fiber Multiplexer Installation Kit
- RJ11
- 600 Ohms Impedance
- LED Indicators
- SFP Module Technology
- 300Hz to 3.4KHz
- Rackmount Options Manuals for 2-Wire Products
(See Bottom of Page)
8 Channel POTS to Fiber Installation Kit is used across the following Industries:
Healthcare
- Hospital wings and clinics
- Inter-building communications over fiber
- Nurse station analog extensions
- Emergency call points
Enterprise & Commercial Buildings
- Corporate campuses
- Security intercom systems
- Elevator and service phones
- Legacy PBX fiber extensions
Industrial & Manufacturing
- Factory floor voice lines
- Maintenance room phones
- High EMI zone communication
- Control room analog links
Utilities & Energy
- Substations
- Water treatment facilities
- Grid monitoring stations
- Long-distance voice lines
Transportation (Air, Rail, Metro)
- Airport gates and hangars
- Railway control centers
- Transit station intercoms
- Metro tunnel communications
Marine & Seaports
- Ship terminals
- Dockyard communication
- Maritime control rooms
- Port security phones
Government
- City halls and municipal buildings
- Courthouses
- Emergency operation centers
- Public utility offices
Military & Defense
- Command bunkers
- Forward operating bases
- Barracks and secure facilities
- Encrypted intercom systems
Education (Schools & Universities)
- Campus-wide analog phones
- Dormitory extensions
- Inter-building PBX lines
- Security gate phones
Public Safety & Emergency Services
- Police station backup lines
- Firehouse communication systems
- Remote EMS station links
- Dispatch room analog voice
Mining & Exploration
- Underground mine phones
- Remote exploration sites
- Rugged analog installations
- Fiber extensions for safety zones
Hospitality (Hotels & Resorts)
- Resort campus phone lines
- Service hallway extensions
- PBX backbone over fiber
- Event facility intercoms
Construction & Temporary Sites
- Portable office voice links
- Temporary site-wide phones
- Construction command trailers
- Legacy PBX reuse in new builds
System Integrators
- Legacy telecom upgrades
- Remote site integration
- Temporary communication builds
- Analog voice backbone deployment
Telecom & Network Providers
- Rural analog phone coverage
- Fiber loopback systems
- Last-mile voice service
- PBX extension in remote areas
Versitron is one of the leading 8 Channel POTS to Fiber Installation Kit manufacturing companies in the USA (based in Delaware). If your industry or installation location isn't listed above, feel free to reach out to us!
Buy the Best 8 Channel POTS to Fiber Installation Kit from VERSITRON at a Competitive Price!!
Why Choose Us
Technical Support
Life Time Warranty
NDAA / TAA Compliant
Submit Enquiry