KDDI-IP Phone

Overview

Services

  • 01. How can I subscribe?
    01. Contact your provider.
  • 02. How can I cancel my subscription to the IP phone service?
    02. Please contact your provider.
  • 03. Is it all right to terminate my conventional phone service with NTT, etc.?
    03. It is recommended to retain the existing general subscriber phone line. If you cancel the general subscriber phone service, emergency numbers (110, 118, 119) become inaccessible.
  • 04. I am planning to move. Can I still use the IP phone at my new location?
    04. Contact your provider.
  • 05. Can I use the IP phone through a dial-up connection?
    05. Problems could be expected trying to access this service through the dial-up connection, so it is not provided.
  • 06. Am I going to get a new IP phone number?
    06. An IP phone number starting with "050" will be assigned to you. You will be able to receive calls from a number with the conventional phone system, a mobile phone, a PHS, and an IP phone (partner providers).
  • 07. What happens to my current phone service when I subscribe to the IP phone?

    07. You can continue to use your current phone number (the number in the conventional phone system). When you subscribe to the service, you will be assigned an IP phone number starting with "050" in "KDDI-IP Phone" system. You can use both numbers.

    050-xxxx-xxxx

    • Calls to some numbers (e.g. 110, 118, 119) as well as toll-free numbers cannot be made from IP phones. Calls to these numbers are automatically made through general subscriber phone lines.
  • 08. When I place a call via the IP phone, I hear a beeping sound before I get connected. What is this?
    08. This is a connection signal that indicates the connection is via the IP phone.
  • 09. Is it all right if I temporally disconnect power to the IP phone home device (IP phone modem and IP phone adapter)?
    09. When customer premises equipment for IP phone (IP phone modem, IP phone adapter) is switched off, you cannot make/receive calls through an IP phone line. Thus, it is recommended not to pull out the plug. Even while the plug is pulled out, the phone is still usable through a service provided by another phone company which has been registered for MYLINE (Note that no service is available if a general subscriber phone line is not connected to the customer premises equipment for IP phone).
  • 10. Are there any phone numbers that cannot be reached via the IP phone?

    10. Calls to specific three-digit numbers starting with "1" (e.g. 110 and 119) except for 184 and 186 as well as some IP phone numbers are unavailable.

    If you dial these specific numbers, such call is automatically made through a general subscriber phone line.
    If you want to make calls to IP phone numbers that are inaccessible from KDDI-IP Phone, dial "009 [1]" first so that you can make calls through a general subscriber phone line.

    • [1]
      When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • 11. Can I purchase an IP phone home device?
    11. KDDI and the other providers currently offer only the rental services for the IP phone home devices. Customers using "IP phone compatible devices" provided by NTT East/NTT West can purchase them. For details, contact NTT East/NTT West.
  • 12. Can I dial emergency numbers such as 110, 118, and 119?

    12. The IP phone cannot reach these numbers. When you dial these numbers, the calls are automatically connected in the conventional phone system. Please note that the IP phone will become disabled for a few minutes after you dial an emergency number.

    • You cannot dial emergency numbers unless the conventional phone line is connected to the phone line port in the back of the IP phone home device.
  • 13. How do I dial a domestic phone number via the IP phone?

    13. Dial the other party's number starting with the area code [2]. After the connecting beeping sound, you will hear the ringing sound telling you that you have accessed this service.

    • [2]
      If you do not dial starting from the area code, the call will not access this service (it will be automatically connected in the conventional phone system). If you set the area code for your IP phone device (IP phone modem, IP phone adapter, or IP phone compatible device provided by NTT East or NTT West), you can use this service for local calls without dialing the area code. For details, refer to the user manual of the IP phone modem, IP phone adapter, or IP phone compatible device (provided by NTT East/NTT West) that came with the device.
  • 14. Can I make an international phone call via the IP phone?

    14. You can access both fixed-line and mobile phones for international calls. Charges, which vary depending on countries and regions, will be incurred separately.

    How to call

    010 - country code - area code - phone number

    001 - 010 - country code - area code - phone number

    This service is not available for making calls to some countries or regions. Dial "0009" first [3]. The absence of the connecting beeping sound will tell you that the call could not be made using this service.

    • [3]
      When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • 15. Can I send a fax via the IP phone?

    15. When you send a fax, dial "0009 [5]" before the callee's phone number. KDDI recommends using the conventional phone system by dialing "0009 [5]" first. If you have memory dialing set on your current fax machine, change it to "0009 [4] + area code + phone number". When you give someone your fax number, use your conventional phone number.

    • [4]
      When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • 16. How can I confirm that I am using the IP phone service?

    16. When you dial a callee's number, you will hear the connecting beeping sound before the ringing sound. In addition, the VoIP light of the IP phone home device (IP phone modem or IP phone adapter) flashes in green during calls via the IP phone. When the phone is accessing via the conventional phone system, the VoIP light flashes in orange.

    • When using an "IP phone compatible device" provided by NTT East or NTT West, refer to the user manual provided with the device.
  • 17. Can I place a call via the telecommunication company I have registered for MYLINE/ MYLINE-PLUS?

    17. Dial "0009 [5]" before the other party's number. The call will be made via the conventional phone system and the company you have registered for the service such as MYLINE will charge you the fees.

    • [5]
      When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • 18. Can I use the IP phone service with a phone equipped with ACR function?
    18. If you dial while the phone's ACR function is enabled, you cannot make a call using this service. Please turn off the ACR function. This applies especially to customers who use "Comista", "Autoconnect", and "Super ACR".
  • 19. I am currently using the ADSL modem with NTT IP phone function on FLET'S ADSL. Can I use KDDI-IP Phone service?

    19. Yes. Visit Self Page and configure the automatic setting of the customer premises equipment for IP phone.

    Open link in a new windowSelf Page (in Japanese only)
    • Firmware update may be required depending on the firmware version of the equipment.
  • 20. Can a call be made to a mobile phone via the IP phone service if I dial 0077?

    20. When you make a call to a mobile phone, you can still use the IP phone service even if you dial 0077 first. The IP phone charge will be the same as when you dial the callee's mobile phone number without dialing 0077.

    1. 0077+080/090-****-****
    2. 080/090-****-****

    You can make a call via the IP phone by either dialing method 1 or 2.

  • 21. Can I receive an international call on the IP phone?
    21. Yes, you can; however, only if the call from overseas is made dialing your "050" IP phone number without going through a local operator. If the telecommunications carrier overseas has not modified their system to allow a 050 connection, the call cannot be connected. If not accessible, KDDI asks you to call on a conventional phone, mobile phone, or PHS instead.

How to call

Voice quality

Charges