> Do people expect to be able to use their own ONTs on FTTH?
Yes? Someone could also take down a GPON segment by shining a laser pointer into it, so that's not really a good argument for banning it. The ONT is often just an off-the-shelf box, and there is no technical reason why it has to be ISP-provided - especially when they then try to charge a fee for it. If some enthusiast wants to just stick an SPF module into their homelab Cisco router, why try to ban it?
There are a few countries where the ISP is legally required to allow third-party ONTs on their network, and that's not really causing any issues in practice. Those laws were originally introduced to deal with really crappy ISP-provided modem+router combos which lacked basic features, but they still work just fine in the FTTH era.
Yes? Someone could also take down a GPON segment by shining a laser pointer into it, so that's not really a good argument for banning it. The ONT is often just an off-the-shelf box, and there is no technical reason why it has to be ISP-provided - especially when they then try to charge a fee for it. If some enthusiast wants to just stick an SPF module into their homelab Cisco router, why try to ban it?
There are a few countries where the ISP is legally required to allow third-party ONTs on their network, and that's not really causing any issues in practice. Those laws were originally introduced to deal with really crappy ISP-provided modem+router combos which lacked basic features, but they still work just fine in the FTTH era.