Select Language : English 日本語 中文(繁體字) 中文(简体字)


Brazil: English / 日本語 / Português do Brasil
United States: English

Europe, Middle East, Africa (EMEA)

(Belgium, France, Germany, Netherlands, Spain, United Arab Emirates, United Kingdom)
English / 日本語 / Español / Deutsch / Français
Russia: English / 日本語 / русский

Asia Pacific

Japan(Business): English / 日本語
Japan(Residential): English / 日本語
Australia(NTT Com ICT Solutions): English
Mainland China: English / 日本語 / 簡體中文
Hong Kong & Macao: English / 日本語 / 繁体中文 / 簡體中文
India: English / 日本語
Indonesia: English
Korea: English / 日本語 / 한국어
Malaysia: English
Philippines(DTSI): English
Singapore: English / 日本語
Taiwan: English / 日本語 / 繁体中文
Thailand: English / 日本語
Vietnam: English / 日本語

Customer Portal


For existing NTT Com Asia and HKNet customers, please follow the links below to login the customer portals of relevant services:


NTT Communications Business Portal
Business Portal provides visual status as well as self-service functions for:
Arcstar Universal One
Arcstar SIP Trunking
Arcstar Smart PBX
Arcstar IP Voice
Arcstar UCaaS
Software-Defined Network
Enterprise Cloud
Security Services
Global Management One

* The link will take you to the customer portal of HKNet, a subsidiary of NTT Communications.

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