FLET'S Hikari Next / FLET'S Hikari Light / FLET'S ADSL / B FLET'S

Who This Page Is For

This page is for users of a NTT FLET'S Hikari Next line, FLET'S Hikari Light line, FLET'S ADSL line or B FLET'S line. If your line is a FLET'S Hikari Premium line please visit this Configuration Guide page.


User Name
Asahi Net User ID@atson.net
E.g. ab3c-defg@atson.net, u1234ab567c@atson.net,
Password The password for the User ID
CHAP (FLET'S Hikari Next / FLET'S Hikari Light)
DNS (Name)
Server Addresses
Set to Automatic

If designation of addresses is essential, please use:
*1 A modified User Name is required if using our Fixed IP Address Option. Please refer to this page for details:

>> Configuration Guide - Fixed IP Address Option

Connecting with PPPoE or NTT's FLET'S Connection Tool


The two factors that will determine the configuration are 1. the type of connection device you received from NTT, and 2. the operating system of your computer.

1. What device did you receive?

Received a bridge-type ADSL modem or media converter (ONU)?

NTT's bridge-type ADSL modems include these models: MN, MNII, MNIII, N, NII and S. NTT's ONU typically has GE-PON-ONU written on it and has a "PON" and "AUTH" lamp. With these devices you will need to make a PPPoE configuration in your computer: please refer to the What is your computer's OS (operating system)? section below.

Received a VoIP router-type ADSL modem?

NTT's VoIP router-type ADSL modems include these models: MNV, SVIII and NVIII. These modems are easy to identify: they have a "V" for "VoIP" in their model name, and they have a "VoIP" lamp.

NTT may have sent you one of these ADSL modems because you told them you are wanting to use an IP-Phone service, like Asahi Net's "IP-Phone-F" service. Please refer to the following English configuration guides.

Received NTT's Webcaster VoIP-capable router?

NTT will have sent you a Webcaster if you needed VoIP equipment to allow you to use an IP Phone service like Asahi Net's "IP-Phone-F" service. Please refer to the following English configuration guides.

2. What is your computer's OS (operating system)?

Using Windows or Mac (English or Japanese)?

PPPoE is built into the the latest Windows and Mac operating systems. Therefore you should not install NTT's Japanese-language FLET'S Connection Tool software or other PPPoE software. Please refer below to our Engilsh configuration guides.

Using Your Own Broadband Router


With a NTT FLET'S connection line your broadband router will need to be PPPoE (PPP Over Ethernet) and PAP (Password Authentication Protocol) compatible, unless the line is FLET'S Hikari Next in which case your router will need to be PPPoE and CHAP compatible. If you are unsure, please refer to the manufacturer's documentation for details.

When using a broadband router that has not been supplied by NTT, you may encounter problems such as not being able to open some Web pages or Web pages opening slowly. In these cases, please try changing the Maximum Transfer Unit (MTU) setting in the broadband router to 1454. By default the MTU setting for broadband routers not supplied by NTT is 1490, a value of 1454 is more compatible with NTT's FLET'S network.

Asahi Net is unable to assist you with the configuration of your own broadband router. Please refer to the manufacturer's documentation for assistance.

Special Notes For English Speakers

A list of points that should be considered by English speakers and/or people using computers with English-only operating systems.

  • NTT only provides Japanese-language software for this service. However if you use Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 or Mac OSX you don't need to install NTT's software. Please refer to our Frequently Asked Questions section for more about NTT's software and ways in which the service can be used without it.
  • There is no English-language documentation provided by NTT for this service.