NTT Communications Business Portal
Service Menu
Frequently Asked Questions with Most Views in Last 2 Weeks
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[Arcstar IP Voice]What should I do if I get the error message "Other user is controlling"?
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[Arcstar Universal One] Where can I see maintenance information of guaranteed circuit in this portal?
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How can I delete "Contact User"?
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How can I change login ID （email address）?
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I have set up the access control based on IP Address, but the user can not access.
Currently being supported Planned Maintenance/Outages Information
There is no Maintenance/Outages information currently being supported.
Deliver maintenance/outages information emails
If you use the maintenance/outages information notification service, we will send you the maintenance/outages information of the registered service by e-mail.
Information
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Important
NTT Communications Business Portal
Redesigned Business Portal on November 19, 2016.
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Important
NTT Communications Business Portal
Annoucement of close the reception of the inquiry by e-mail
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Important
NTT Communications Business Portal
Announcement of some screeen change on the BusinessPortal