NTT East and NTT West announced on Nov 30, 2017 that FLETS ADSL services will be discontinued on Jan 31, 2023. There will be no more ADSL from 2023 on. NTT is urging the ADSL users to upgrade it to FTTX or DIA services right now.

We are afraid that at the end of the year 2022, there will be too many ADSL users switching the services. This will create so much trouble.

JCI customers need to replace all the ADSL services with fiber service before July 2022. Otherwise, we can't guarantee the customers will be able to keep the Internet running.
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Here are the links to the official announcements by NTT.

NTT East NTT West News Release

There is no more ADSL modem manufactured in 2022. This means that once your ADSL modem becomes dysfunctional, you will not be able to replace with another modem. And you will end up losing the connection.

This is another reason that all the ADSL users need to switch to FTTX/DIA right now.

Please do not wait. Consult your Global ISP now if you are one of these ADSL users.

Service Name	ISP
<A> SOHO 200M (Up to 5 PC's)	NTT (Last mile provider) FLET'S + GOL/IPQ/GMO
<B> M Office 1G (Up to 10 PC's)	NTT (Last mile provider) FLET'S + GOL/IPQ/GMO
<C> M Office 200M	NTT (Last mile provider) FLET'S + Biglobe IPoE
<D> M Office 1G	NTT (Last mile provider) FLET'S + GOL/IPQ/GMO
<E> M Office 1G (* only in Tokyo)	NTT (Last mile provider) FLET'S + EditNet
<F> L Office 100M (20 + PC's)	Arteria (Last mile provider) DIA
<G> L Office 1G/500M (30 + PC's)	Arteria (Last mile provider) DIA
<H> L Office 1G/1G 　 (30 + PC's)	Arteria (Last mile provider) DIA
<I> L Office 1G/1G Business (40 + PC's)	NTT (Last mile provider) DIA + Interlink
<J> L Office 1G/1G (30 + PC's)	Softbank (Last mile provider) DIA