Subscribe to Xataka MobileReceive an email a day with our articles:We are already very used to having routers at home and even buying our own routers to replace those placed by our operator.Mainly because these routers are usually not very powerful and limited in some aspects, which is why they usually choose to replace them with more powerful and modern routers, but above all more customizable and adaptable to our uses.However, with the arrival of fiber optics, things have become a bit more complicated with the appearance of ONTs.The ONT is the device to which the fiber cable that enters our home from the street is connected and that has a very particular connection as it is a fiber cable.That is why any router on the market does not work for us and we need one that has it.Or an adapter, of course.As we have mentioned before, the ONT is the device to which the fiber optic cable that enters our home is connected.It is a specific device since the fiber optic connection is different from the classic ADSL router.That is why an adapter is usually used if we are going to use a normal router instead of a fiber optic one, which already has the integrated ONT.The name comes from its name in English, Optical Node Terminal, which can be translated as optical node terminal, although the most common is that everyone refers to it as ONT.The ONT, in feminine, more specifically.Thus, the usual thing is that your fiber operator sets up a router for you that already has an integrated ONT, since they have contracts with certain brands for its supply.It is common, for example, for Movistar to mount Mitrastar or Askey fiber routers, the two routers currently being assembled, and for both models to have the integrated ONT.But in the case of routers with an integrated ONT, things get even more complicated because there is another factor in the equation, the OLT.The OLT is the device that the operator has outside your home and that is responsible for sending the main signal to many clients, including you.We usually find them in locked boxes on the street but they can be placed in other locations.When it comes to knowing which fiber router you have to buy, you need to have an ONT but also know which OLT your operator uses, since the new router must be compatible.So if you are going to do a blind test by buying a router with integrated ONT for your home (or an ONT adapter to later place a more classic router), we recommend that you buy it from a distributor that allows you to return it, as it could happen that is not compatible with your connection.We are going to introduce a third level of difficulty in the process, but rest assured that we are already finishing.In order to replace your operator's fiber router with our own, we already know that the new one must have an integrated ONT (or buy an adapter) and that it must also be compatible with the OLT installed on the street.The third level is that of the GPON and SIP keys that we will have to have.Do not run so much, your operator is not going to give you the GPON and SIP keys just like thatThese GPON and SIP keys will be necessary to be able to configure the new neutral router that we have bought to replace that of our operator.It is similar to the connection keys that we need to replace an ADSL router with the difference that the operators are not going to give you this key.It is a fact, operators do not provide this key to users who ask for it.As we can see, replacing an operator's fiber router is not an easy task, although there are advanced methods that would allow us to achieve it, such as opening the router itself to tap internal connections.Although the best thing will always be to go to an authorized installer who can provide them to us.And it's not easy either.Share What are the ONT and the OLT and why are they important if you want to change your operator's fiber router for a neutral oneMore Sites You'll LikeSee more articlesSee more videosAt Xataka Móvil we talk about...