Fiber Ethernet Switches in China: OPT-105 Selection FAQ for CCTV, FTTx and Enterprise Projects

Key Takeaways: Confirm Ports, Fiber Format and End-to-End Compatibility Before Ordering

Fiber Ethernet Switches solve a very practical problem: copper Ethernet reaches the cabinet, gatehouse, floor switch or camera cluster, while fiber carries the uplink over the route where copper is no longer the sensible medium. The purchase order succeeds only if the port arrangement and optical format match the actual link. This is where otherwise routine projects stall.

OPTONE lists the OPT-105 series with four 10/100Base-TX RJ45 ports and one 100Base-FX fixed-fiber or Fast Ethernet SFP uplink. Treat that series description as the starting point, then have the supplier confirm the exact variant. A line item reading “1 × 10/100M TX and 1 × 100M FX” may describe a different configuration, an abbreviated listing, or an incomplete request. It is not enough information to release a project order safely.

Why Does OPT-105 Appear as 1 × 10/100M TX + 1 × 100M FX When the Product Overview Lists 4 RJ45 Ports?

The discrepancy should be resolved before you compare prices. The OPTONE product overview and ordering information supplied for OPT-105 describe four 10/100Base-TX RJ45 ports plus one 100Base-FX uplink, offered as fixed fiber or a Fast Ethernet SFP option. A one-copper/one-fiber description is a common way the market labels a simple media converter, but it should not be assumed to be the same hardware as a four-RJ45-port switch.

Ask for the exact OPT-105 ordering code, a front-panel port description, and the fiber interface definition. That request separates a genuine five-port access switch from a two-port converter-style requirement. It also prevents a site team from discovering, after cabinet installation, that there are not enough copper ports for cameras, wireless access points or local endpoints.

The distinction matters operationally. A switch aggregates multiple local copper devices onto one fiber uplink. A one-RJ45-port converter is intended to extend one Ethernet device across fiber. See the listed OPT-105 fiber Ethernet switch options, then make the port count a written line on your purchase specification.

OPT-105 Fiber Ethernet Switch Options: Port Configuration and Optical Uplink Comparison

For this family, the buyer’s first choice is not “fiber or copper.” It is the uplink architecture. Fixed-fiber models suit projects with a settled connector and fiber plan. An SFP-slot version gives the installer more freedom to select the appropriate Fast Ethernet optical module for the link, provided the selected module and the remote end are compatible.

WDM single-fiber is an optical transport method that sends and receives Ethernet traffic over one fiber core using different wavelengths. The two ends are complementary, not interchangeable: one optic’s transmit wavelength must correspond to the other optic’s receive wavelength. It is useful where a route has limited spare cores, but it creates a pairing-control task that standard two-fiber duplex links do not have.

Selection point	What OPT-105 information indicates	What you should confirm
Copper access ports	Series overview lists four 10/100Base-TX RJ45 ports	Required local device count and exact ordered model
Fiber uplink	One 100Base-FX fixed-fiber or Fast Ethernet SFP uplink	Fixed connector versus SFP slot, and remote-end interface
Fiber media	Multi-mode, single-mode and Bi-Directional WDM choices are described	Installed cable type, available cores and optic pairing

Do not select multi-mode or single-mode by habit. Read the existing cable record, inspect the route documentation, and confirm what is installed at the far end. Connector polish, patch-cord arrangement and splice condition can matter as much as the switch category.

How China Project Buyers Should Select an Unmanaged Fiber Ethernet Switch in Five Checks

Unmanaged equipment is attractive in distributed CCTV, building access and small FTTx extension points because there is no switch configuration to maintain. That simplicity has a boundary: you still need disciplined pre-order checks. A low unit price does not offset a return visit to a pole cabinet, lift shaft or remote utility room because the wrong optic arrived.

1. Count endpoints. List every local copper device and retain a port for the intended connection pattern; do not rely on a generic “1+1” listing.
2. Identify the far-end device. Confirm that its fiber port or SFP is a compatible Fast Ethernet interface, not an assumed match.
3. Read the fiber record. Establish multi-mode, single-mode or a one-core WDM route before choosing the uplink format.
4. Choose the physical interface. State fixed SC, ST or FC where required, or specify the SFP-slot approach and the module to be used.
5. Check the installation conditions. Confirm the site’s power arrangement, cabinet space, grounding practice, ambient environment and patching method against the selected product documentation.

China project procurement often splits these decisions between the integrator, weak-current contractor and purchasing department. Put the fiber-link details into one approval sheet. It avoids the familiar problem of a correct switch arriving with an incorrect fiber presentation.

Fiber Ethernet Switch FAQ for Procurement, Installation and Network Integration

The questions below are the ones worth settling before goods leave Shenzhen. They are not theoretical. A switch can power up and still fail the project because the remote endpoint expects a different optical arrangement, because the installed trunk has only one usable core, or because the cabinet needs several local RJ45 connections rather than one. For an unmanaged product, compatibility is designed into the order rather than corrected later through configuration.

Use the series page as a reference, but send your topology and required interface to the supplier with the request. For a multi-site order, identify every site that differs from the standard arrangement. One exception cabinet with a different connector type can hold up commissioning if it is not marked at quotation stage.

Do I need an unmanaged fiber Ethernet switch or a one-RJ45-port fiber media converter?

Choose an unmanaged fiber Ethernet switch when several nearby 10/100Base-TX devices need to share one fiber uplink. The OPT-105 series overview describes four RJ45 access ports, making that arrangement relevant to small camera groups, local office endpoints or field cabinets. Choose a one-RJ45-port media converter when the requirement is simply one copper Ethernet device extended over fiber. Do not substitute one for the other based on a compressed product title. Confirm the local port count, uplink type and exact model on the quotation.

How do I choose multi-mode, single-mode, WDM single-fiber, fixed SC/ST/FC, or an SFP-slot uplink?

Start with the cable already installed and the device at the other end. Multi-mode and single-mode refer to the fiber medium; they are not interchangeable selections. WDM single-fiber is appropriate only where you have a single fiber core available and can control the complementary optics at both ends. A fixed SC, ST or FC interface is practical where connector type is fixed by the project. An SFP slot is preferable where the optical module must be selected separately or may change across sites. Request written confirmation of the complete end-to-end link, not just the local switch port.

Request an OPTONE OPT-105 Project Quote and Fiber-Link Confirmation from Shenzhen

Send OPTONE the exact copper-port requirement, whether you need the series arrangement listed as four 10/100Base-TX ports and one 100Base-FX uplink, and the fiber details from both ends. Include the cable medium, available fiber cores, connector preference or SFP requirement, and the remote switch, converter or optical module. If the request originated from “1 × 10/100M TX + 1 × 100M FX,” ask directly whether that wording refers to the intended OPT-105 variant.

For CCTV contractors, attach the camera cabinet schedule. For enterprise teams, attach the access-layer port map. For FTTx work, identify the fiber distribution point and the planned WDM pairing if single-fiber transport is proposed. You will get a more usable quotation, and the installation team will have a much clearer handover package. Review the official OPTONE OPT-105 product page before submitting the final bill of materials.