The price of optical fiber transceivers with the same speed can differ several times, and the difference is often in the number of electrical ports. One light and one electric power to one light and eight electric power correspond to completely different point densities. If you choose too many, it will be a waste. If you choose too few, there will not be enough ports and the whole machine will have to be replaced. This article goes through the combinations according to scenarios.

One light, one electricity and one light, two electricity: point-to-point scenario

Most commonly used files.Gigabit single mode dual fiber one optical one electrical fiber optic transceiverIt is suitable for one link to carry one device, such as an intersection camera or the upstream port of a building switch. There are two forms of one optical and two electrical ports: the two electrical ports are used separately for link backup, or one is in use and the other is a backup port, such as100M single-mode dual-fiber one-optical and two-electrical fiber optic transceiver, suitable for situations where there are few terminal devices but switchability is required.

One light, four electricity and one light, eight electricity: centralized access to the fiber core

When there are multiple low-speed devices at the end and there is only one optical cable, one optical cable and four electric cables are used to support one group. It should be noted that each electrical port shares the optical side bandwidth: if four ports are equipped with high-definition surveillance, you must choose a Gigabit link. 100M, one optical and four electrical are more suitable for light traffic such as access control and sensors. More intensive access is also available100M single mode single fiber 1 optical 1 electrical + 1 optical 4 electrical fiber optic transceiverand other combination forms; when reaching the eight-power scale, it is usually recommended to compare with cabinet switches, and the total cost may exceed them. When installing a combined model, make a list of the numbers of the hanging equipment and electrical ports and stick it on the inside of the cabinet door, so that subsequent inspections do not need to be carried out one by one.

Port budget based on traffic

  • First, list the peak code stream of each terminal, add it up, and compare it with the optical side rate, leaving a 30% margin.
  • The electrical ports are only used for access expansion. Don't expect all ports to be full at the same time.
  • The reserved ports are estimated to be expanded in the next two years to avoid repeated machine replacements.
  • When you are unsure about the form, the model with an SFP slot for replaceable optical modules is more flexible.

After the number of electrical ports is determined, go back to the two dimensions of speed and single and double fiber and review it to lock the model. EB-LINK technical support can solve these three questions at once according to the point table, call 0755-83179002.