FAQ

Service contents
Switch over from NTT East/NTT West and number portability
Applying
Usage fees & billing
Other

Service contents

01. How does this service reduce costs?: 01. Until now, phone users have had to funnel calls through the telephony equipment of NTT East or NTT West and relay telephone companies chosen through MYLINE etc. This made it necessary to pay basic rates for NTT East or NTT West and payments to relay telephone companies. With Metal-plus Phone, KDDI provides the portion equivalent to NTT East and NTT West subscriber lines. This is what makes basic rates cheaper for this service (excluding residential class one stations). In addition, KDDI also offers reduced calling rates by using a high quality KDDI IP network as relay telephone network. This has actualized a rate system that is less expensive and simpler than ever before.

02. What areas is this service offered in?

02. This service is available in major cities across Japan. Click here to check detailed service area information.

Check service areas (in Japanese only)

03. How much time does it take for the service to start after applying?

03. For customers who have already subscribed to NTT subscriber phone, it takes approx. 2 - 3 weeks to launch the network.
When a construction to set up a new network is required, it takes approx. 3 - 4 weeks to launch the network.

*: Please check the network's launch date in the "Information for New Users" (GORIYOU KAISHI NO GOAN-NAI) which will be sent to customers before the network's launch.
In some cases, it will take more before the service becomes available due to flaw in application form or condition of line equipment.
*: If you apply for an area that will be serviced in the future, service processing will commence as soon as service becomes available in that area.
*: Some facility conditions may prevent servicing even within the service areas.

04. Are there any quality problems or other problems?: 04. Metal-plus Phone is a phone service that uses a high quality KDDI IP network. It provides calling quality and stability on par with existing services, and has made emergency calls possible.

05. Can I install a new phone?: 05. Yes. In the case of NTT East/NTT West subscriber phone, the phone equipment installation charge (telephone subscription right) of ¥37,800 is required. In the case of Metal-plus Phone, such installation charge is not required. However, fees for setting up a new network (¥7,140) and other charges are separately incurred. KDDI provides a new phone number beginning with the area code. Ex: 03-6678-XXXX

06. Can I use a dial-up Internet connection?

06. You can use "au one net" dial-up service.
Other providers' dial-up services may not be available depending on phone numbers to connect.
Phone numbers "0077-XXX" and "0077-80-XXXX" can be used, while other access numbers including those stating with "00XY" (nationwide) become unavailable.

*: Modem transmission can be affected by your home environment, telecommunication equipment, and line condition.

Metal-plus Phone course (dial-up) (in Japanese only)

07. Can I use ADSL?

07. You can use "ADSL one". If you are currently using ADSL from another company, you cannot continue to use that ADSL service and Metal-plus Phone, so the ADSL service from another company needs to be canceled.

*: If you are using the au one net ADSL service, switching to the ADSL one course is necessary.
*: Only available for Metal-plus Phone customers.

ADSL one 50 details (in Japanese only)

ADSL one 30 details (in Japanese only)

08. Can I use the phone while connected to the Internet?: 08. If you use ADSL, you can. However, Metal-plus Phone is not available during dial-up Internet access.

09. I don't have a computer. Do I need a computer to use Metal-plus Phone?: 09. You do not need a computer to use this service.

10. Can I use Metal-plus Phone during a power failure?: 10. Yes. You can even use phones that require an electricity source. However, in some cases, some equipment such as answering machines, faxes, and cordless phones might not be usable.

11. What happens if I attach an access number (service supplier identification number) from another company as a prefix and dial a phone number?

11. Even if an identification number for another service supplier is attached to a phone number, if the function being used is a service provided through Metal-plus Phone, such as automatic dialing for local, long distance, mobile phone, and international calls, you are using Metal-plus Phone. In that case, be aware that Metal-plus Phone service calling rates are applied.

*: The same applies when automatic dialing is used through an ACR function etc. of the telephone itself.

12. Can I call toll-free numbers?: 12. You can continue using toll-free numbers and Navi Dials, KDDI FREE CALL as in the past. However, calls to some phone numbers may be restricted. Furthermore, toll-free numbers and others may be unavailable depending on a contractor's setting.

13. Can I use a fax and modem?

13. Fax and modem transmission may be affected by your home environment, telecommunication equipment, and line condition.

*: Faxes are generally usable with this service (G4FAX and Super G3FAX are unavailable).
*: Regarding dial-up Internet connections, depending on the phone number to connect they may not be available.
*: Signal monitoring transmission services (security company, etc.) are not available.

14. Can I use the SKY PerfecTV! PPV (pay-per-view) service?: 14. Yes.
However, this can be affected by your home environment, telecommunication equipment, and line condition.
Also, if you use ADSL one, purchasing a splitter or changing your connection structure might be required.

15. Can I call 110 and 119?: 15. Yes. You can also call 118 (Coast Guard). When you call these numbers, your information (the address, name, and phone number of the contracted party) is relayed to the emergency center you call. Even lines that are set to withhold caller ID relay your information to emergency centers unless you dial 184 (as long as you dial 184 first each time you make a call, your information is not relayed).

16. Can I call 113 (telephone technical faults hotline) and 116 (moving and general inquiries)?: 16. For inquiries about issues such as phone technical faults and moving, call the KDDI Customer Service Center. NTT East and NTT West's 113 and 116 are not available.

17. Can I call 117 (time announcements) and 177 (weather forecast)?

17. Yes. However, routine calling rates are applied. For weather forecasts, you can listen to information in a specific region if you dial the area code for that region before dialing 177 (you are charged calling rates for calls made to the region for the area code you dial).

Usage rates

18. Can I call IP phones (050)?: 18. You can call most IP phone service providers (Phone numbers except for 050-7700-XXXX are accessible).

19. What kind of add-on services do you provide?

19. KDDI provides "touch tone signal (touch tone line)" service as standard. Besides, "Caller ID display (equivalent to NTT's number display)", "Caller ID request (equivalent to NTT's number request)", "Call waiting (equivalent to NTT's catch phone display)", "Call-waiting number display (equivalent to NTT's catch phone)", "Call forwarding", "Nuisance call blocking (equivalent to NTT's nuisance call blocking service)", "Check KDDI incoming call history with your au mobile phone" are available.

Charged Fees

*: Some add-on services are not usable with this service.

Non-applicable add-on services

20. Dual-tone multi-frequency (push button phone line) phones are the standard for this service, but can I also use a dial phone?: 20. Yes, you can.

21. When is interior house wiring work required?: 21. Construction work is required when a telephone line is to be installed from a protective device or MDF to the telephone installation location, for example, in the case of a new building or addition of lines. Or when a modular jack must be installed (connection) even in the environment where a telephone line has been already installed.
No construction work is required if an existing NTT East/NTT West line can be used by switchover.

22. Can I use Metal-plus Phone and other companies' optical fiber service at the same time?: 22. Metal-plus Phone can be used even while using the Internet through other companies' optical fiber service. However, customers using VDSL Internet are not allowed to newly subscribe to the Metal-plus Phone service due to a possibility that construction to establish a connection cannot be performed in an apartment building.

Switch over from NTT East/NTT West and number portability

01. What should I do with the NTT East or NTT West line I have been using up until now?

01. If you switch over from an NTT subscriber phone, cancellation or temporarily suspension of your line from NTT East or NTT West is necessary.
In this case, KDDI handles the processing for cancellation or temporary suspension when you apply for Metal-plus Phone. If you currently have a telephone subscription right, KDDI handles temporary line suspension processing for you. If you do not have a telephone subscription right (if you entered an "Analog Lite Plan (Kanyu Denwa Lite Plan)" contract, for example), KDDI handles line cancellation processing for you (you do not have to apply for cancellation or temporary suspension on your own).

*: Although your line is cancelled if you do not currently have an NTT East or NTT West subscription right, you can use your current telephone number.

Notes

Please be aware of the following points regarding temporary suspension of a telephone subscription right.

Temporary suspension fee	You are billed a temporary suspension fee of ¥2,100 separately from NTT East or NTT West.
Temporary suspension notice	NTT East or NTT West sends a temporary suspension notice to you. This temporary suspension notice will be required in the future if you use NTT East or NTT West again, so you should keep it in your records.
Usage suspension period	The usage suspension period for NTT East/NTT West subscriber phones is, in principle, 5 years. You can receive an extension past 5 years if you notify NTT East/NTT West. Please be aware that if you do not notify NTT, your phone subscription right may become invalid.

02. Can I use the phone number of the NTT East or NTT West line I have been using up until now?

02. The number portability system allows you to use the same phone number you are using now. However, the following conditions need to be met.

Your current phone number is under a telephone switch that is number portability compatible.
Your phone is a general subscriber phone (phone service) and ISDN (Integrated Services Digital Network) provided by NTT East or NTT West to a contracted party.
The telephone classification for your phone designated by NTT East or NTT West is not a public phone, temporary telephone, or branch rerouting phone.
The phone number is currently used by the user, and there are no changes in the usage location.

※: Check your eligibility to use number portability at the following link.

Check service area (in Japanese only)

*: If you are not eligible to use the number portability system, KDDI assigns you a new phone number.
*: Portability is available if you are currently using ISDN, though you are switched to an analog line. If you use 2ch, please be aware that 1ch (line) is used.

03. Do I have to cancel services from the telephone company I have been using up until now?

03. MYLINE service (MYLINE or MYLINE PLUS) is automatically cancelled. Also, KDDI telephone usage contracts and discount services are also automatically cancelled (excluding some services such as "Kakedoku Pack").

Notes

Regarding the discount services of the telephone company you are currently using, flat fees may be incurred even after you start using Metal-plus Phone, so have those services canceled.

04. I am currently using NTT's INS64. Can I apply to Metal-plus Phone?: 04. You can apply, but you are switched to an analog line. If you use 2ch, please be aware that 1ch (line) is used.

05. I heard that using this service means I can no longer use a home security service or automatic gas meter reading. Is this true?

05. Connections to the following home security services have been confirmed (Contact security companies before applying for the Metal-plus Phone service).
No Ringing Communication Service (companies engaged in remote meter reading and control for electricity, gas, water etc.) and signal surveillance communication services (e.g. security companies) become unavailable. Make sure to contact service providers (e.g. gas companies, security companies) as needed.

Communications to accessible gas meter reading and security companies

06. Can I use an off-talk communication service?: 06. The off-talk communication service becomes unavailable. Contact the information center to terminate the service as needed.

07. I am using the international call block. Can I continue to block international calls after changing to Metal-plus Phone?: 07. If you continue to use an NTT East or NTT West phone number which has international call block, your new phone service continues to have international call block.
If you are assigned a new phone number, or if you want to cancel the block, contact the International Call Block Center.

08. I am renting a telephone from NTT. What happens when I sign up for Metal-plus Phone?

08. If you are renting a telephone from NTT East or NTT West, one of the following procedures is necessary, corresponding to the type of telephone.

1.: If you are using a telephone through an NTT lease or installment payment plan, contact NTT LEASING CO., LTD (phone number: 0120-866-612). Processing is required for changing the payment method.
2.: If you are using a rental from NTT East or NTT West (black telephone, push-button telephone, etc.), contact NTT East or NTT West.

09. I am renting interior house wiring from NTT. What happens when I sign up for Metal-plus Phone?: 09. If you are renting interior house wiring from NTT East or NTT West, your facilities are changed and monthly rental payments are no longer necessary.

Applying

01. How are the application categories defined for household and business use?

01. Household applications are only accepted for contracting parties that use the line under their own individual names at places of residence.

*: KDDI is the final judge for determining the category for each application.

02. Where can I get information about ADSL one/Metal-plus Phone (for business use)?

02. Information for ADSL one/Metal-plus Phone (for business use) is available at this link:

ADSL one/Metal-plus Phone (for business use) (in Japanese only)

Usage fees & billing

01. How are fees billed?

01. Your monthly bill comes from KDDI, and billing from NTT East or NTT West ceases in most cases. You can choose from the following payment methods.

Account transfer	KDDI receives an automatic monthly money transfer from a financial institution on a day designated by KDDI.
Credit card payment	KDDI receives an automatic money transfer on a day determined by your credit card company. [1]
Counter payment	You pay at a counter at a financial institution, convenience store, etc.

If you choose account transfer or credit card payment, KDDI deducts ¥105/month from your basic rates.

[1]: If you choose account transfer or credit card payment, KDDI deducts ¥105/month from your basic rates.

02. I am using the KDDI local & long distance service now. Is the payment method for Metal-plus Phone the same?: 02. If you specify your current payment method when applying for Metal-plus Phone, you can use the same payment method.

Other

01. Can I be listed in telephone directories (HELLO PAGE and TOWN PAGES) and 104 directory assistance?

01. Yes. You are required to fill in the application form. However, telephone directory listing is limited to HELLO PAGE (telephone directory for individual customers). Please note that KDDI does not distribute telephone directories. To obtain a copy of telephone directory, contact the TOWN PAGE Center (0120-506-309/9:00 - 17:00 on weekdays).

*: Charges are incurred for the delivery of telephone directories.

*: All of the above-mentioned charges include applicable taxes. Please note that the amount shown here is the total amount including the approximate amount of consumption tax and it may differ from the actual billed amount.

*: All company names, product names, and service names herein are trademarks or registered trademarks of their respective companies.

*: Please note that the actual tax amount is calculated based on the non-taxed charge total and it may differ from the total calculated with the individual charges including tax.

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