03plus Achieves 120K Lines
2026-04-16 02:29:56

Cloud PBX '03plus' Surpasses 120,000 Lines, Catering to Freelancers and SMEs

Revolutionizing Business Communication with 03plus



In a remarkable achievement, the cloud PBX service '03plus', offered by Granton, has surpassed 120,000 lines since its launch. Targeting primarily freelancers and small to medium enterprises (SMEs), 03plus is transforming traditional business communication in Japan. With the telecommunications landscape shifting towards IP networks and away from outdated metal lines, the demand for flexible and efficient communication systems has soared. 03plus meets this demand by enabling users to make and receive calls using their fixed telephone number on smartphones, ensuring seamless business communication regardless of the location.

Background of Growth


The recent surge in freelancers and individual entrepreneurs has significantly contributed to the rising demand for reliable fixed telephone services. According to the Ministry of Internal Affairs and Communications, there are approximately 2.09 million people working primarily as freelancers in Japan. When including those engaged in side jobs or multiple occupations, the figure exceeds 2.57 million. As diverse work styles become more accepted, many freelancers seek fixed phone lines with area codes to enhance business credibility, while avoiding high costs and complex installations. This shift has been a driving force behind the new memberships to 03plus.

Mandate for Change: NTT's Transition to IP Networks


NTT East and NTT West are set to transition from the Public Switched Telephone Network (PSTN) to IP networks starting January 2024, completing the process by December of the same year. With plans to gradually discontinue metal copper lines by 2026, businesses are reevaluating their communication infrastructure, resulting in heightened interest in cloud PBX solutions that require no hefty investments and offer swift installations.

Cloud PBX Market Growth in Japan


The adoption of remote and hybrid working environments has fueled demand for solutions like 03plus. Ministerial surveys highlight that 12.65 million workers (19.1%) in Japan utilized telework as of 2022, showcasing the increasing necessity of versatile communication systems unrestricted by physical office locations. 03plus is capitalizing on this trend, continually expanding its customer base across both freelancers and SMEs.

Features of 03plus


03plus delivers a flexible and location-independent cloud PBX service. It allows users to utilize their fixed phone numbers on their smartphones, promoting efficient business communications free from office constraints. With the recent addition of a software phone (softphone), users can now handle calls on both smartphones and PCs, maintaining consistency in their business operations regardless of their work setting.

Quick and Easy Integration


03plus stands out for its simplified onboarding process, with no cumbersome contracts or installations required. Users can secure their 03 numbers through a straightforward web application, taking as little as 10 minutes to set up.

Cost-Effective Solution


The monthly fee for using 03plus starts at a competitive price of ¥1,280, making it a more economical choice compared to traditional fixed phone systems.

A Variety of Optional Features


03plus allows multiple users to share a single phone number, while also facilitating fax communication and seamless customer interaction from any location. This extensive range of optional features makes it an effective tool for managing business operations more efficiently.

For more information, visit the 03plus website.

About Granton Co., Ltd.


  • - Company Name: Granton Co., Ltd.
  • - Location: 6-18-5 Jingumae, Shibuya-ku, Tokyo 150-0001
  • - Representative: Katsuo Imoto, CEO
  • - Established: July 1999
  • - Capital: ¥10 million

Contact for 03plus Inquiries



Please note that company names, product names, and service names mentioned are trademarks or registered trademarks of their respective companies.


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Topics Telecommunications)

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