ISDN provided by NTT East / West Japan will move to an IP network in January 2024.Along with that, various services end, one of which is the INS net "digital communication mode".The INS Net has a 64kbps communication speed with a low speed of 64kbps, but can be used in a safe communication close to a dedicated line, and can make calls, so there are still strong needs in a wide range of fields such as ATM, POS terminals, and CAT devices.Prior to the end of the INS net, SoftBank will end the PHS telemettering plan at the end of March 2023.The telemata plan is used mainly in the emergency call telephone network installed in the elevator.There are many companies that have been postponed for replacement from ISDN and PHS because it takes costs and effort.For example, the powerful migration of ISDN is the optical line "FLET'S Hikari", but it is an issue that the communication speed changes depending on the usage status because it is the best effort type.Also, using a dedicated line such as IP-VPN is inevitable that costs will be significantly higher than before.In the first place, 64kbps is an overdose for a sufficient system.Of course, it is necessary to replace the equipment, and the telephone line must be separately drawn.In response to this situation, NTT East and West will provide users who are not renewed by the end of the INS net in January 2024, and will provide data communication over Metal IP telephone by around 2027.It is necessary to keep in mind that the terminal can continue to use the conventional ISDN device using an existing metal cable, but does not have the same communication quality as the INS net, and the communication speed is further reduced.In this way, each method has its own advantages and disadvantages, and companies that are considering migration may be wondering what to choose.What I would like to recommend for such companies is the Mi audio-compatible LTE router "AirReal-Voice2".
