To strengthen security and provide stable MiiTel services, we will perform emergency maintenance on specific circuits as described below.

We plan to perform this maintenance when no calls are in progress during the stated window, but depending on system operation, the following impacts may occur.

We will do our best to minimize the impact on customers. Thank you for your understanding and cooperation.

If any changes or additional information arise, we will update this announcement as needed. Please check back regularly.

Maintenance Schedule

• Wednesday, November 4, 2026, 9:00pm – 0:00am (JST)

Circuits Subject to Maintenance

Circuits where “Circuit type” displays one of the following in MiiTel Admin's Phone Number Management:

• JPN-5
• JPN-6
• JPN-7

Affected Customers

Customers using MiiTel Phone or MiiTel Phone Mobile and one of the above circuits subject to maintenance.

Impact

• JPN-5
  • You will be unable to make or receive calls twice, for up to 1 second each time.
  • Calls that started before the maintenance begins may be disconnected.
• JPN-6
  • You will be unable to make or receive calls twice, for up to 1 second each time.
  • Calls that started before the maintenance begins may be disconnected.
• JPN-7
  • During the maintenance window, there will be a period of approximately 30 minutes when you cannot make or receive calls.
  • Calls that started before the maintenance begins may be disconnected.

If you have any questions, please contact us.