Nowadays, in social cities, surveillance cameras are basically installed in every corner. We see various surveillance cameras in many residential buildings, office buildings, shopping malls, hotels and other places to prevent the occurrence of illegal activities.
With the steady development of economy and technology, people’s awareness of security monitoring is constantly improving, and it is required that any place must have security monitoring. However, the complexity of urban development makes the monitoring system of traditional access mode unable to fully meet the requirements, and the monitoring system using PON network access is gradually becoming popular.
As an important access device in a PON system, the choice of ONU is crucial. So which ONU is better and how to choose?
ONU is a user-end device for PON applications. It is a high-bandwidth and cost-effective terminal device necessary for the transition from the “copper cable era” to the “optical fiber era”. It plays a pivotal role in network construction.
ONU is an optical network unit, which uses a single fiber to connect to the central office OLT to provide services such as data, voice, and video. It is responsible for receiving data sent by OLT, responding to commands sent by OLT, buffering data and sending it to OLT. Requires relatively high sensitivity and is simple to use.
ONUs are divided into ordinary ONUs and ONUs with PoE. The former is the most common ONU device and the most commonly used ONU. The latter is PoE-capable, that is, with several PoE ports, through which the surveillance cameras can be connected to make them work normally and get rid of complicated power wiring.
In addition to the PoE port, the ONU with PoE must have a PON. Through this PON, it can be connected to the OLT to form a PON network as a whole.
At present, this kind of ONU with PoE is favored by monitoring engineering companies. For example, the ONU price of Sushan Weida is very high, but it solves many unnecessary cumbersome problems. Therefore, if the PON network is used in the monitoring project, the ONU with PoE function can be selected.
Post time: Feb-25-2022