How this service is provided
- 1. Usable phone type
Telephones that can access Disaster Emergency Message Dial (171) (telephone service) are Analog phones, ISDN* phones, pay phones, HIKARI DENWA phones*, and special pay phones installed by NTT East and NTT West at evacuation centers, etc. when a disaster occurs.
In addition to NTT East and West, this service can also be used from other carriers’ phone services such as mobile phones and PHS. Please contact the relevant telecommunications carrier you use about possible telephone service to make calls, dialing charges, etc.
- * Not accessible if you use a rotary-dial phone on the ISDN or HIKARI DENWA service.
- 2. Initiation of service provision
When, in the event of a disaster such as an earthquake, an increase in telephone calls for inquiry regarding safety, etc., made to a disaster-stricken area makes it difficult to connect calls to that area (telephone traffic jams), the service is activated by NTT East and NTT West.
* The method of operation and conditions of service provision such as the start of the service and telephone numbers that can be registered in this service are determined by NTT East and NTT West depending on the circumstances; NTT East and NTT West will inform the public of the details through television and radio broadcasts, the official NTT West website, and other means.
- 3. Telephone numbers that can be registered
Telephone number of an Analog phone, ISDN phone, or HIKARI DENWA phone, mobile phone, etc. for people in a disaster-stricken area.
* The method of operation and conditions of service provision such as the start of the service, etc. are determined by NTT East and NTT West depending on the circumstances; NTT East and NTT West will inform the public of the details through television and radio broadcasts, the official NTT West website, and other means.
- 4. Message recording time, message storage period, and number of storable messages
Message recording time: Up to 30 seconds per message
Message storage period: Until the service is turned off
Number of storable messages: 1 to 20 messages per telephone number (Made known to you when the service is on)
The number of storable messages, storage period, etc., will vary depending on the conditions of the disaster. For the latest information, refer to the following web page, etc.:
http://www.ntt-west.co.jp/dengon/news/ (in Japanese only)
- 5. Telephone charge
Center usage charges regarding to the use of message storage units, etc. are free of charge.
Dialing charges are free to record and play back messages from an NTT East or NTT West subscription phone.
When you make calls from telephones connected to the network of a telecommunications carrier other than us, contact the relevant carrier regarding dialing charges.
- 6. Other
- In addition, using a personal identification number allows you to record and play back messages between designated persons that you do not want others to hear.