What is a call forwarding service? Explain what kind of guidance will flow when using


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VoiceWarp® is a trademark of the automatic call forwarding service for NTT East/NTT West landlines and Hikari Denwa.

In business, telephone communication is essential.

However, it is not always possible for a staff member to respond to incoming calls. Especially when employees are often out of the office, it will be difficult to respond smoothly and speedily without using a call forwarding service .

However, if you have never used a call forwarding service, you may be wondering what kind of guidance you will receive on the phone.

Therefore, in this article, we will introduce guidance when using call forwarding . You can also check the overview and main functions of the call forwarding service, so please refer to it.

What is a call forwarding service?

What is a call forwarding serviceA call forwarding service is a service that allows you to forward incoming calls to a pre-registered phone number .

Examples of call forwarding services include NTT’s Voice Warp.

If you use a call forwarding service on your company’s landline, the call will automatically be forwarded to the employee in charge without someone answering the phone.

An increasing number of companies are introducing remote work, but many of them may have the problem of having to send employees to work just to answer the phone.

If you use a call forwarding service, you can not only reduce the burden of answering the phone , but also eliminate the need to provide the phone number at the company in the first place .

What kind of announcements will be made when using the call forwarding service?

In conclusion, the guidance method differs depending on the call forwarding service you use .

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Sometimes the caller notices that the call has been forwarded by the device guidance, and there are cases where the caller does not notice the forwarding without receiving the guidance.

For example, in the case of an automatic forwarding function for forwarding calls from outside the company to a pre-registered number, it is common for the call to be forwarded to the other party.

Some call forwarding services also have a function that allows you to play any message as an announcement when forwarding a call .

If you make good use of this function, it will be useful not only for improving the efficiency of normal phone calls, but also when relocating an office or opening a new store.

On the other hand, in the case of internal call forwarding, there are many cases where no notice is given, so the other party often does not notice even if the call is forwarded to another number.

Introducing Call Forwarding Service Features

Here, we will introduce the functions installed in each carrier’s call forwarding service.

NTT|Voice WarpThe main functions of NTT’s call forwarding service “Voice Warp” are as follows.

  • Automatic forwarding function (unconditional forwarding, forwarding when no answer, forwarding when busy, forwarding when no answer + forwarding when busy)
  • Select function (registration number transfer/registration number incoming call)

As you can see above, it has a lot of call forwarding functions.

The point is that the settings of the forwarding function can be easily changed by phone or the Internet.

au Hikari | Call Forwarding: Phone Option

With au Hikari, you can install a call forwarding function as a phone option.

The official website of au Hikari states that the following three functions can be used.

  • unconditional transfer
  • schedule transfer
  • Busy transfer

There are two ways to change the settings: by phone or on the Internet (My au).

In addition, you can start/stop using the function and set the number at any time from outside (remote control).

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If you want to know the detailed setting method, check the official website or contact au directly.

SoftBank|Multi-function forwarding service

SoftBank also offers a multi-function forwarding service that forwards incoming calls to a pre-specified number. It guides you through the main functions.

  • automatic forwarding
  • Forward after answer
  • Forward No Answer
  • Busy transfer

In addition , when changing the usage details of the service, it is necessary for the user to operate on the contracted line . Please note that the method of applying for use from the web is not supported .

In addition to being able to start using services and change settings by remote control like au, various additional services are available.

The more services you subscribe to, the higher your bill will be, but in some cases, you may be able to significantly improve your operational efficiency.

The main additional services are shown below, so please check the official website for details.

  • Caller ID request service
  • number display service
  • dial-in service
  • Three-way call service
  • push phone service, etc.

Information on recommended services: NEC Networks & System Integration’s Canario

Canario provided by NEC Networks & System Integration is a service that uses AI to automatically transfer calls to pre-registered numbers.

In addition , since there is a function to group numbers, employees can work together as a team regardless of the distance .

Since it can be used on any device, it can be used not only on smartphones, but also on landlines and feature phones.

In addition, it is equipped with a confidential call function and a function that allows you to visualize the brokerage history on the cloud. There is no need to install new dedicated equipment.


A call forwarding service means your company doesn’t have to keep an employee to answer the phone.

It is also a great advantage that the employees who have been dealing with it until now can do other work or concentrate on their original work.

As a company, it will lead to the improvement of overall operational efficiency, which will lead to increased sales and profits .

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There are many types of call forwarding services, many of which focus on forwarding functionality.

However, NEC Networks & System Integration’s Canario, which we introduced this time, is equipped with many functions other than the AI ​​transfer function.

In particular, the function that can share the history of telephone brokerage in the cloud can be used for remote work.

Since it is possible to visualize which employee responded and how in the chat, smooth information sharing will be realized even in environments where employees cannot meet face to face.

If you would like more information about Canario or have any questions about how to set it up, please feel free to contact us.