KDDI-IP Phone

How to Use

You can continue to use your own phone and NTT phone number.

Just by connecting the IP phone modem (a rental provided by the service provider), IP phone compatible device (provided by NTT East/NTT West), or IP phone adaptor (a rental provided by KDDI) to your current phone and configuring it, you will be ready to use the IP phone service.

Using the IP phone compatible device (provided by NTT East/NTT West)

How to install an IP phone modem

ADSL + KDDI-IP Phone

Connection example

About the IP phone compatible device (provided by NTT East/NTT West) and the IP phone adaptor

For FLETS ADSL/B FLETS, you can use either the IP phone compatible device (provided by NTT East/NTT West) or the IP phone adaptor (rental provided by KDDI).

Using the IP phone compatible device (provided by NTT East/NTT West)

How to place a call with the IP phone service

Calls to a KDDI-IP subscriber

  1. Dial the IP phone number starting with "050".
  2. You will hear the beeping sound indicating that a connection is being made.
  3. Your free call has begun.
  • An IP phone number is issued when you subscribe to the KDDI-IP Phone service.

Domestic calls

Dial the callee's number starting with the area code.
After the connecting beeping sound you will hear the ringing sound telling you that you have accessed this service.

  • If you do not dial the area code first, the call dose not access this service (you will know by the absence of the connecting beeping sound that you are not using this service). If you set the area code for your IP phone device (IP phone modem or IP phone adaptor) 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.

Calls to a mobile phone or PHS

Dial the mobile phone or PHS number.
After hearing the connecting beeping sound, you will hear the ringing sound telling you that you have accessed this service.

  • When you first dial "0077" before the mobile phone number, the call is still an IP call (the charge is of the IP phone service. Your IP phone number will be shown on the caller ID).

International calls

Dial "010" before the country code.
The connecting beeping sound will tell you that you have accessed this service.

This service is not available for making calls to some countries or regions. Dial "0009" first [1]. The absence of the connecting beeping sound will tell you that the call could not be made using this service.

  • [1]
    When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".

How to send a fax

When you send a fax, dial "0009" before the callee's phone number [2].
If you have memory dialing set on your current fax machine, change it to

"0009" + area code + phone number

  • [2]
    When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • For technical reasons regarding the IP phone system, KDDI recommends using conventional phones.

How to use phone services other than KDDI-IP Phone

Dial "0009" first [3].
You can use services via the conventional phone system.

Examples:

  • IP phone of a provider other than the partner providers
    How to dial: "0009" + "IP phone number (050-xxxx-xxxx)"
  • Calls to a 0077 mobile phone
    How to dial: "0009" + "0077" + "mobile phone number (090/080-xxxx-xxxx)"
  • [3]
    When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".
  • Calls via the conventional phone system use services that your phone company is providing such as MYLINE and MYLINE PLUS.
Special numbers starting with "1", Toll-free calls, Navi-dial, and Dial Q2 numbers

Dial the callee's number.
If you have a conventional phone service contract with your phone company, your calls are automatically made via your landline.

  • This is not included in the service but you can automatically use the conventional phone service to make a call (the absence of the connecting beeping sound will tell you that the call is not using this service). Please note, however, this service is not available if you have not subscribed to the conventional phone service.

Phone numbers not connectable with KDDI-IP Phone service

Phone numbers starting with the following digits are connected via the conventional phone system.

  • Call fees are charged by each telecommunication company.

Note that the following numbers cannot be connected if you use KDDI-IP Phone via dedicated internet connection such as Dedicated ADSL type and optical fiber system course and do not have connection to the conventional phone system.

  • Emergency numbers such as 110 and 119
  • KDDI Customer Service Center (0077-777/0077-7084)
  • Numbers not connectable with IP phone (the above numbers included)
  • Dial from a conventional phone, mobile phone, or PHS.
  • If you share the phone with the conventional phone service, this is connected via the conventional phone system.
0010 (except for 001010) 040
002 0570
003 060
004 0800
005 091
006 0990
007 (except for 00770) 1 [4]
008 2 [5]
009 3 [5]
0120 4 [5]
0140 5 [5]
0160 6 [5]
0170 7 [5]
0180 8 [5]
0190 9 [5]
020 #
030  

Example: 0120-xxx-xxx (Calls to a toll-free number)
3347-xxxx (Calls without dialing the area code)
110 and 119 (Calls to the special numbers starting with "1")

When you first dial "0009" [6], you can call the number via the conventional phone service. Call fees are charged by each telecommunication company.

  • [4]
    IP phone system is available if you dial 184 or 186 before the phone number.
  • [5]
    Unless the area code is set in the IP phone modem, IP phone adaptor, and IP phone compatible device.
  • [6]
    When using an IP phone compatible device (provided by NTT East or NTT West), dial "0000".

About caller ID notification

When a call is made via IP phone, the IP phone number starting with "050" may be displayed on caller ID notification.

  • By modifying the settings of the IP phone modem, IP phone adaptor, or IP phone compatible device (provided by NTT East or NTT West), you can configure "Hide/Show" for caller ID (the default is "Show").
  • By dialing "184/186" first, you can select "Hide/Show".
  • When a call is initiated via the conventional phone system, the phone number of your conventional phone (e.g. 03-xxxx-xxxx) will be shown.