Here at CST we’re a world leader in supplying new and refurbished telecommunications equipment. This means that we hold one of the largest and most complete inventories of fixed-line and mobile telecoms infrastructure available anywhere. Ready to dispatch to you the same day.

Here at CST we are industry leaders in compatible optical transceiver coding, testing and distribution serving the telco and service provider market.
We have an unrivalled telecoms testing lab, a vast selection of compatible optical transceivers compliant with MSA standards and a highly experienced team. Available at a fraction of the cost of vendor-branded equivalents and supplied with a 3 year warranty, our range of brand new optical transceivers are tested to your exact specification and offer a high-quality, dependable solution to build and maintain your network.

GPON (Gigabit Passive Optical Network) is a medium for delivering data services (including digital TV, internet and phone services) over fibre optic cables.
Take a look at our GPON infographic below to find out how it all works. Here you’ll see that an Optical Line Terminal (OLT) sends a single line of optical light (signal) into a splitter. The splitter contains glass elements that act as a prism to divide (or split) the optical light into multiple identical waves of signals down individual fibres which are connected to an Optical Network Unit (ONU). This is a termination point where the end-user can leverage the signal for work, home and leisure activities.
The output of GPON configurations typically feeds up to 64 unique endpoints, powering multiple FTTx applications with ample capacity and consistent connectivity to ensure the lowest possible cost of ownership. Please contact us to discuss all of your options.

We’re leading suppliers of GPON hardware
Here at CST, we’re proud to offer a range of high-quality, reliable and cost-effective GPON hardware for our ISP and broadband provider customers. All of our GPON products are backed by a 2-year warranty and are fully compatible with original equipment manufacturer (OEM) equipment. The line consists of two main product types outlined in further detail below: plug & play OLTs and open-use ONUs.

What are plug & play OLTs?
The plug-and-play OLT (Optical Line Terminal) is a high-performing, active Ethernet aggregation device that serves as a service provider endpoint of a passive optical network. The OLT is beneficial because it replaces the need for multiple layer 2 switches at distribution points, therefore saving costs.
OLTs can satisfy long-distance optical fibre access requirements due to their flexible network mode. These compact devices are convenient and deploy easily as a result of their plug and play capability. In addition, OLTs can be used for “triple-play”, VPN, Enterprise LAN, IP Camera and ICT applications.

What are open-use ONUs?
Open-use ONUs (Optical Network Units) offer high-speed fibre services to global ISPs and service providers. As part of a wider configuration, they deliver triple-play services (data, voice and video over IP) for business and residential users.

Experts in FTTx street cabinets design & build
We understand that it can sometimes be tricky to determine which FTTx street cabinet option is the best match for your needs. While there is no straightforward playbook (as much as we’d love to share one with you), our team is here to help.
Bringing together our extensive network equipment expertise, we provide a wide range of FTTx street cabinet solutions designed to meet any deployment or expansion strategy. To save on space we can also hold stock on these items for you, storing them until the time is right for your installation.
– The ‘bare cabinet’ option
– Ready-to-go cabinet
– Bespoke design, build & supply service

We’re pleased to offer an extensive range of OEM compatible cables and accessories. To guarantee the quality of our products every item is tested for functionality and interoperability on real platforms prior to shipment. We are compliant with MSA standards and every product comes with a 3-year warranty.
– Fibre patch cables
– MUX / DEMUX passive solutions
– Media converters
– Active optical cables (AOC)
– Direct attach cables (DAC)
– Fibre breakout cables

Here at CST, we’re proud to offer a wide range of high-quality and cost-effective FTTx solutions with full end-to-end support. Get in touch with our team today and discover an easier way to deliver high-speed internet connectivity to your customers. All our products are tested extensively in our lab before dispatch and come backed by our comprehensive warranty as standard.
– FTTx street cabinets
– GPON hardware
– Optical transceivers
– Cables & accessories
– Network design & build

Experts in specialist telecom hardware supply for critical communications
We work in close partnership with our critical comms, utility and oil & gas clients to provide specialist telecom hardware that delivers great results. We offer the full spectrum of options from complete system integration to hardware-only supply, and have long term channel partner status with a number of key manufacturers.

Our areas of expertise include
Microwave radio, including the full suite of installation related materials such as antennas, waveguide, cabling, specialist materials used in offshore environments such as ATEX enclosures and specialist glanding solutions
Topside communications for offshore oil and gas and renewables including PAGE (public address and general alarm), meteorological systems, AIS (automatic identification systems), NDB telephone systems (non-directional beacon) and PBX, VHF and UHF radio, CCTV and so on
Routing and switching for all telecom applications including ruggedised models for industrial and harsh environments such as those in the utility and DNO (distribution network operator) sector
Optical transmission equipment for all telecom applications including the oil, gas and renewable energy sector (such as wind farm connectivity)
Private LTE (long term evolution or 4G) for offshore and utility use
Specialist VHF and UHF radio for offshore and also utility use for SCADA systems
Mobile cellular routers for monitoring and IP networking in utility and SCADA systems
Our valued partners have invested hugely in us through the provision of technical guidance, training and support in order that we can provide the very best service to our clients. We have our own in-house design and projects team as well as our own installation and commissioning engineers. We can provide supply of materials only or full system integration including system design, drawings, documentation and FAT/SAT (factory acceptance test and site acceptance test).

Our key partners are listed below
Microwave radio – NEC
Topside comms – Sea Surveillance
Optical multiplexers – ECI
UHV / VHF radio & cellular routers – RACOM
Industrial routing & switching – Siemens
Routing & switching – ITGL
OT cyber security – Radiflow