Transition from ADSL to fiber optic.

Hello, The fiber stops at the ONT box, the Box continues to deliver Wifi and Ethernet exactly as before, only the speed changes. Only "bottlenecks," such as powerline adapters with insufficient speed, are likely to cause problems if the required speed is significant, which is evidently not the case here.

Hello

There’s no reason for it not to work. The transmissions will take place as before.
As for the transition to fiber, it’s an unavoidable process. You can delay the moment of abandoning ADSL. But you will be using a copper network whose maintenance is no longer a priority, with the risk of increasingly frequent outages.

Hello,

The explanation of your question isn't very clear: you mention connecting a male T-junction to an RJ45 socket on your box, so we're talking about telephony here, not Ethernet. You also mention SFR; if you're referring to a nb6 box, then it's possible: the telephone and ADSL sockets are combined into an RJ45, but it’s not Ethernet. Telephony will continue to work the same way on fiber, that’s for sure; however, you will likely switch to a fiber box 7 or box 8, depending on your choice. The telephone socket will become an RJ11 socket, so you'll need a phone adapter to RJ11 instead of RJ45, which is no longer provided with the box. But for the long term, you need to plan to switch your home automation from PSTN to Ethernet. The DVR, I think it’s connected via Ethernet, not to the phone socket; you shouldn’t mix everything up in your description.

Hello everyone and thank you for your replies. To brupala: Indeed, I don't fully grasp the difference between Internet and Ethernet or I may not have explained myself well. I shouldn't have mentioned the connection to the box going through telephone sockets in T (male/female) halfway. What I mean is that if back then I had had the crimping tool, I could have made my own direct Ethernet cables, to length, in Category 5, with RJ45 (transmitter side) and RJ45 (box side SFR NB6). No more T sockets. Regarding the transmitter, just like the axiphone, for me, it’s only about telephony. The transmitter calls me and the axiphone is called. But since I have an ADSL line, I have to go through the RJ sockets via the LAN ports of the box. To brucine and Pierr10. I completely agree about switching to fiber, as I've only been eligible for a few days! I've been suffering from the obsolescence of copper cable for too long, and I know they won't touch it now. You three confirm that it should work, so I'm glad and I'll give it a try. Last question: It’s in a house that's all in length. Do I need to completely redo my internal copper installation to fiber from the fiber PTO arrival box? That's quite a bit of work since I have a lot of phones and I’ve run all my copper cables down from the attic. How does it work? Will I have telephony continuity if I leave it as is? That's all I'm asking about inside the dwelling. (for phones and axiphone). Thank you in advance.

brupala: I sincerely apologize if I told you a lot of nonsense and indeed, it's confusing! I'll clarify. The cables with the old male T connector: from the alarm transmitter, the axiophone, and the 2 telephone bases are all located near the box on a female T double L1-L1 connector (imagine it's just a switch) and then go directly (with the cable provided by SFR female T connector/yellow RJ plug - into the "TELEPHONE" RJ45 socket of the box. Only my PC tower and the camera image storage that I can access from outside are connected to 2 of the 4 RJ45 LAN ports with Ethernet cables. I hope it's clearer now! That’s all there is, the rest is on WiFi. These 4 cables have been run directly from the devices to the box, independent cables from each other. It makes for a long run of cable, which is why I asked if it could work with these same cables after the fiber installation. Thank you.

There are (were) T L1 - L1 doublers and T L1 - L2 doublers. It's definitely a L1 L1 doubler, no problem on that front. I was thinking of getting rid of all these connectors that take up space and replacing them with a kind of low-cost switch - telephony only - before heading out to the RJ connection to the box. Does that even exist, and can it work? First, this is not data transfer but rather VoIP; then instead of distributing incoming data to different devices, I need to do the opposite: gather my 4 device inputs to send a single cable to the box via the RJ "Telephony" socket. Do you have any idea if I can find that, and as far as you understand what I mean? The principle: just replace this stack of male and female connectors that I had to tape together to avoid false contacts. Thanks to everyone.

Thank you for the link. It's exactly what I'm looking for, but I feel like it's playing the same role as a switch based on the explanations and if I understood everything correctly. That is to say point 5 on Amazon: - "A single telephone line can be used to separate multiple devices for simultaneous use....." If it only works one way, then I need the opposite. 5 incoming signals for 1 output signal, not the other way around. If it works both ways, then it's all good, but I'm afraid it doesn't! This is the principle of TV antenna couplers or others: 1 input and distributing to 2 or even 3 TVs. I saw this at Fnac, and it clearly states that it works both ways, reversible, except that it's too tight for me. www.fnac.com/mp41942603/Switch-Commutateur-Aiguilleur-Ethernet-RJ45-REVERSIBLE-1-entree-2-sorties-OU-2-entrees-1-sortie/w-4 That's it. I'm going to search and see if I can find something with more ports. Thank you for your guidance. I'm going to try fiber. I think my DVR cameras will work too since it's digital and it's the one that processes the images it receives. The image quality remains to be seen, we'll see. Thank you for your tips!

OK, that works. A bit of space gained. Indeed, in telephony, when it goes one way, it goes the other. I really thought a Switch only worked one way: 1 Input to x Outputs and not the other way around. Thanks again for all this information. Neither SFR nor ORANGE could tell me that it wouldn't change anything. I should have probably mentioned that they were just phones after all. Thank you, you really helped me. I'm closing the topic while waiting for the fiber installation, which shouldn't take long with SFR given how they’re putting pressure on me. Bye.

Indeed, as Nicolas pointed out in the comment. It's basically the little brother of the other one and not expensive. The cable to the box is indeed very short, but I have rectangular couplers F x F and ready-made cables to extend it to the box. Thank you. I will come back to post after the fiber installation if I have a problem, but it shouldn't normally happen.

Not bad and the assembly is very well explained. The pins are just inserted, I think it’s more fragile than an RJ11 crimp. Or to be protected in a rack or a cabinet with a DIN rail that will cost 25 times this price. I find the first model more reliable, if you already have the crimping tool, of course. Just a matter of taste. Not available but it must be found elsewhere.