Rules and model matching for multi-service same-fiber multiplexing

One fiber core runs multiple services: key points of video, audio, data and telephone multiplexing

Published: 2025-12-25 EB-LINK Views: 1405 Same fiber multiplexing, single fiber bidirectional, reverse data, dispatch telephone, optical transceiver

The fiber core from the studio to the computer room is often not enough, and the pipeline at the front end of the command center is even tighter. Multiplexing multiple services on the same fiber can save cables and pipes, but the cost savings will be converted into maintenance complexity, so the rules need to be set in advance.

Reusable combinations and models

Video plus reverse control: 8 channels of video with 1 channel of reverse 485, use8-channel video + 1-channel reverse 485 data video optical transceiverWith pan/tilt and lens movements, return and command are shared.
Independent audio loop: microphone and monitor1-way two-way audio optical transceiver, separated from the video link to avoid audio being constrained by the video channel bandwidth.
Scheduling voice: Program-controlled switching to remote seats8-way telephone + 1-way Internet phone optical transceiver, the same core takes away multiple phones and one channel of data.
Pure data and alarm collection is offloaded to Gigabit transceivers or access ports with SFP slots, without having to squeeze in the video link.

three boundary conditions

First, it is recommended that same-fiber multiplexing be used only on single-fiber bidirectional (WDM) paired models. The local end and the opposite end must be paired and installed. Mixed use will lead to complete failure. Second, the business boundaries should be clearly visible on the distribution frame. When a link fails, it can be immediately determined which types of services are involved, so as to avoid monitoring screen alarms and troubleshooting broadcast links together. Third, confirm the terminal power supply method in advance. Mixing centralized power supply with local adapters is prone to ground noise. The audio link is particularly sensitive. It is recommended to use a separate fiber core for long-distance audio dispatching.

Leave a way out

It is recommended to reserve one-click exclusive spare cores for core production and important scheduling links to prevent key services from being placed on the same core during capacity expansion. Wolflight can provide suggestions on reuse plans and paired models according to the project business list. For details, call 0755-83179002.