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All you need to know to have the best connection

Technology used

One of the most important aspects when hiring an operator is knowing what technology are you using to bring the Internet to our home. Currently in Spain we have different technologies, such as FTTH, cable, xDSL technologies (ADSL2 + and VDSL2) as well as wireless connections using the WISP to bring the Internet to our homes. The best technology is fiber optics to the home (FTTH), since it is the one with the highest download and upload speeds we can hire, and also the one with the lowest latency compared to the rest of the alternatives. Right now in most cities in Spain there is FTTH coverage with one and even several different operators. If you have no choice but to contract with companies that do not have FTTH, prioritize cable over xDSL and wireless connections.

Contracted speed and price

The speed that we want to hire is closely related to the technology used. Nowadays in Spain, if you have FTTH coverage, operators allow you to contract speeds of up to 1Gbps symmetric. If you use other technologies such as cable, it will depend on the DOCSIS standard that your operator has, and if you use xDSL it will depend on the distance to the central.

We must also bear in mind that the higher speed we hire, the more expensive the connection will be to Internet. However,we really need 1Gbps internet connections? A few years ago, in RedesZone we commented that with a 300Mbps connection in our home, we have more than enough to navigate from multiple devices, stream in 4K resolution and even download from BitTorrent networks without problems.

And the fact is that the speed that we contract with FTTH is guaranteed in the operator’s own network, but outside of it, we depend on many factors, which are not under our control. It is very likely that, if you hire 600Mbps speed and make direct downloads from different websites, it will not exceed 200Mbps, due to issues of peering and transit between ISPs. For this reason, we must see if it is really worth the speed / price that our operator offers us, and of course, we must know if our local network is prepared for 100Mbps connections or more:

We recommend you read this comparison of convergent mobile plus internet offers that our colleagues from ADSLZone have done.

CG-NAT: avoid as much as possible the operators that use this technology

CG-NAT allows operators to save public IP addresses, but this means that you cannot open ports and be accessible from the Internet, and if you have FTP or VPN servers at home, they will not be accessible through the Internet. We have already we tried one day to be with CG-NAT, and we were only able to make a basic use of the Internet connection.

In RedesZone we have carried out a complete list of operators that use CG-NAT in their networks, so that you avoid this technology as much as possible. Most operators with CG-NAT will not give you any problem to “get out”, but you will have to make the request. ΒΏHow to know if my operator has me inside the CG-NAT? In RedesZone we publish a complete step-by-step tutorial to find out.

Router: the heart of the network must comply

The router is the heart of the network, and this is where many operators fail as they provide a router with really poor performance. All FTTH operators have routers simultaneous dual band, Gigabit Ethernet ports and even USB. On paper, the performance they should provide is outstanding, but this is not always the case.

HGU Movistar

To find out if our operator’s router is good or bad, just go through forums like ADSLZone to see the opinions of other users. Mainly where these routers fail is in the coverage and Wi-Fi performance, since they usually provide low speed, very little coverage, and even random cuts.

You can see the differences between cable and Wi-Fi.

Ease of changing the operator’s router for a higher performance own one

Closely related to the operator’s router, there is the possibility of changing the ISP’s router for its own one with higher performance, which does not have the problems that the operator’s own has. Depending on the operator and the technology used, this task will be really very easy to do, or almost impossible to change our operator’s router. Normally if you have FTTH and have a separate ONT and router, the task is greatly facilitated, however, routers with integrated ONT may not allow the change of router.

If you have Movistar FTTH with triple-play, you can visit our complete step by step tutorial to change the router for an ASUS, and also by a D-Link router compatible with Movistar FTTH triple-play. If you do not have Movistar TV, you will always be able to put any router with support for VLANs, such as FRITZ! Box, NETGEAR and many other manufacturers.

If the Internet connection also has VoIP and TV, it is very likely that you will not be able to change your operator’s router if you do not want to be left without a telephone and without a TV, however, there are operators that do allow the change, although we will have to look for ourselves enough life to make the change. If you have several operators with coverage at your home, and you don’t know which one to choose, we recommend you visit our ADSLZone FTTH forums where we can help you in this important decision.

We recommend you visit our tutorials on what data collected by internet operators, and also what can investigate a public IP with OSINT.