LIPSE SIP TRUNKING
日本語 | English
Japan DID & Toll-Free Numbers
—for Companies with a Legal Entity in Japan
Fast, compliant access to 03 / 050 / 0120 / 0800 numbers
with per-second billing.
- Licensed Japanese telecommunication carrier
- Large inventory of Japan DID and toll-free numbers
- Streamlined onboarding for Japan-registered companies
- Per-second billing to reduce outbound call charges
- English and Japanese support
- Interconnection with other major Japanese carriers
TYPE OF JAPAN PHONE NUMBERS AVAILABLE
03-xxxx-xxxx geographic area code DID numbers
050-xxxx-xxxx non-geographic national DID numbers
0120-xxx-xxx and 0800-xxx-xxx non-geographic toll-free numbers
Eligibility (Important)
This service is available only to companies with a registered legal entity in Japan (e.g., KK/GK or a registered Japan branch).
Your systems and call centers may be located overseas, but the contracting entity must be registered in Japan.
COMMON USE CASES
CALL CENTERS
Japan-registered companies (or their Japan subsidiaries/branches) use our SIP trunk service to make and receive calls to and from customers in Japan—whether their call center operation is in Japan or overseas.
CTI, PBX, AI PROVIDERS
Cloud PBX, CCaaS/CTI, IVR, and Voice AI providers with a legal entity in Japan leverage our SIP trunk to deliver complete Japan voice connectivity to their customers.
BUSINESSES
Companies with a registered legal entity in Japan—regardless of where their teams are located—are switching from traditional physical phone lines to our SIP trunk service to modernize Japan inbound/outbound calling.
eSIM SERVICE PROVIDERS
eSIM providers with a Japan entity leverage our SIP trunk and Japan DID numbers to enable compliant voice services for travelers, roaming, and IoT use cases.
VoIP COMPANIES
VoIP and virtual number providers with a Japan-registered entity rely on our SIP trunk service to deliver Japan DID numbers and voice connectivity to their customers.
BENEFITS OF
OUR SIP TRUNK SERVICE
Our SIP trunk service is highly regarded for its reasonable cost and quality. In Japan, telephone charges are typically billed every three minutes. However, our phone lines are billed per second which reduce call charges by 30% or more.
We are partnered with other major Japanese carriers and have interconnection with them in our Data Center (Tokyo) which enables us to offer wider range of numbers and per-second billing.
You can use our phone lines through the internet,
so the setup is easy with no equipment required.
SAMPLE PRICING
Monthly Charges
| Item | Price (USD) |
|---|---|
| DID Numbers Fee | $1 |
| Channel Fee | $8 |
One Time Charges
| Item | Price (USD) |
|---|---|
| One time setup fee | $65 |
| Succeeding orders fee (per order) | $10 |
Outbound Call Charges
| Item | Price (USD) |
|---|---|
| Japan Landline | $0.0004 (Per Second) |
| Japan Mobile | $0.0017 (Per Second) |
Power Your Global Communications with Our Japan SIP Trunking Solutions
Are you looking to optimize your Japan voice infrastructure and connect seamlessly with customers worldwide?
Our SIP Trunking platform provides a cost-effective, scalable, and secure way to manage Japan calls—for companies with a registered legal entity in Japan—while maintaining high call quality and reliability.

Comprehensive Voice Services
From inbound call routing to outbound campaigns, our SIP Trunking solution delivers a wide range of voice features that can be tailored to your business needs. Whether you require flexible call forwarding, IVR (Interactive Voice Response), or advanced call queuing, we provide enterprise-grade capabilities to streamline your communications.

Secure, Reliable Infrastructure
Your business deserves peace of mind when it comes to voice communications. We partner with top-tier carriers and implement stringent encryption protocols to safeguard calls and sensitive data. Our high-availability architecture, complete with redundancy and failover mechanisms, ensures you stay connected even during peak load or unexpected outages.

Cost-Effective and Transparent Pricing
Optimize your telecom expenditures with competitive, transparent pricing models—pay only for the minutes you actually use. With SIP Trunking, you eliminate the hidden fees often associated with legacy systems, enabling more predictable budgeting and better resource allocation.

Dedicated Support and Ongoing Consultation
Our dedicated support team is on hand to assist with everything from initial setup and deployment to ongoing optimization. Whether you need help with network configurations, number portability, or advanced call routing, we work closely with you to ensure your SIP Trunking implementation delivers consistent, measurable results.

SIP Trunking in Japan – Securely Obtain a Japanese Phone Number
If your company has a registered legal entity in Japan and you need Japanese phone numbers for business operations, SIP Trunking is an ideal solution.
Our deep understanding of Japanese telecommunication regulations and compliance requirements ensures you can acquire and manage Japan numbers with confidence.
Why SIP Trunking Matters
SIP Trunking allows you to leverage the internet for voice calls, bypassing expensive traditional phone lines. For international businesses, especially those seeking efficient communication channels in Japan, SIP Trunking provides:
- Seamless Connectivity: Link your existing communication systems to Japanese phone lines via SIP Trunking and consolidate all your calls through a single platform.
- Reduced Costs: Minimize operational expenses by eliminating the need for on-site hardware and fixed telephony infrastructure.
- Scalability and Flexibility: Easily add more lines or phone numbers as your business grows—no physical rewiring or lengthy contracts required.
- High-Quality Voice Calls: Our SIP Trunking setup is optimized for stable, crystal-clear voice calls, ensuring reliable communication with your Japanese customers and partners.
Expertise You Can Trust
We understand that obtaining a Japanese phone number involves navigating both technical and regulatory requirements. Our extensive experience in the local market means you can rely on our team to:
- Handle Regulatory Compliance: From Japanese telecom guidelines to number portability rules, we manage the entire process so you can focus on your business.
- Customize the Optimal Setup: Whether you need a single Japanese phone number for customer support or a nationwide multi-branch solution, our SIP Trunking experts design a plan tailored to your specific needs.
- Offer Comprehensive Support: Our dedicated technical support team is ready to assist with any inquiries, ensuring prompt resolutions and smooth operation.
How Our SIP Trunking Service Works
- Consultation & Assessment: We begin by understanding your communication needs—do you need toll-free numbers, local Tokyo numbers, or both?
- Number Allocation: We then secure your desired Japanese phone numbers through our SIP Trunking service.
- Configuration & Setup: Our team handles the technical aspects—configuring VoIP settings, ensuring compatibility with your existing systems, and performing quality checks.
- Ongoing Maintenance: Stay confident knowing that we continuously monitor and optimize our SIP Trunking network for maximum uptime and call quality.
Benefit from Our In-Depth Telephony Knowledge
Our company is committed to sharing our telecommunication expertise with clients. By choosing our SIP Trunking service, you gain:
- Access to Expert Knowledge: We keep pace with the latest trends and innovations in Japan’s telecom landscape.
- Reliable Technology Partnerships: Our close relationships with top providers in Japan ensure you receive the highest-quality SIP Trunking experience.
- Long-Term Support: As your business grows, we are here to recommend new features, advanced call routing strategies, or additional phone numbers that enhance your Japanese operations.
By combining our thorough understanding of Japan’s phone number regulations with cutting-edge SIP Trunking solutions, we guarantee a hassle-free experience from start to finish. Work with us to secure a Japanese phone number quickly and efficiently, and trust that you have partnered with a team of true telephony experts. If you are ready to get started—or if you simply have questions about how SIP Trunking can benefit your business in Japan—reach out to us anytime. We look forward to helping you expand your global reach with confidence.
ABOUT LIPSE
LIPSE is the brand name for the telecommunication services provided by IPS PRO, INC.
IPSPRO operates as a telecommunication carrier in Japan and was established in July 2022 through the spin-off of domestic telecommunication business of its holding company IPS, Inc. (Tokyo Stock Exchange Code 4390).
IPS continues to provide comprehensive telecommunication services with unique and innovative ideas, leveraging the relationship and track record it has built with other major Japanese telecommunication carriers over the years since its founding in 1991.
Under our brand name LIPSE, we offer a variety of communication services such:
- Japan SIP Trunk
- Cloud Call Center System AmeyoJ (CCaaS)
- Cloud PBX
- Data Center Services
- IaaS Cloud Services.
ABOUT LIPSE
LIPSE is the brand name for the telecommunication services provided by IPS PRO, INC.
IPSPRO operates as a telecommunication carrier in Japan and was established in July 2022 through the spin-off of domestic telecommunication business of its holding company IPS, Inc. (Tokyo Stock Exchange Code 4390).
IPS continues to provide comprehensive telecommunication services with unique and innovative ideas, leveraging the relationship and track record it has built with other major Japanese telecommunication carriers over the years since its founding in 1991.
Under our brand name LIPSE, we offer a variety of communication services such:
- Japan SIP Trunk
- Cloud Call Center System AmeyoJ (CCaaS)
- Cloud PBX
- Data Center Services
- IaaS Cloud Services.
Regardless of DID or SIP Trunk, we can support your market expansion in Japan.
We offer partner assistance in Sales, Marketing, Technical, and Legal consultation related to Japan.