Virtual-Call's SIP Trunk earns Unify-Mitel certification

Not all SIP Trunk providers are created equal, and certification is what sets the best apart.

Virtual-Call has officially earned the OpenScape Business V3R4 certification, joining a select group of providers authorized to carry the Unify-Mitel ITSP badge. 

Valid across 6 countries, including Germany, Switzerland, Austria, Brazil, Spain, and the UK, this milestone means one thing for your business: guaranteed compatibility, out of the box.

Here's what this certification covers and why it should matter to you.

What does this certification mean?

The OpenScape Business V3R4 certification confirms that our SIP Trunking service has been rigorously tested and officially approved for use with the OpenScape Business communication system, one of the most advanced and respected platforms in the market. 

In practice, this means that signaling, codecs, security mechanisms, and feature sets have all been validated to work together reliably in real-world scenarios.

For your organization, this translates into seamless integration with existing OpenScape Business deployments, predictable behavior from day one, and fewer configuration risks during migration or roll-out. 

You can expect optimized performance in terms of call quality, stability, and failover behavior, as well as full support for key features such as call routing, number presentation, and unified communications functions. 

Because the solution is certified, troubleshooting and support processes are also more straightforward, with clearly defined scenarios and best practices.

In short, the certification reduces project complexity, accelerates implementation, and helps ensure a superior communication experience for both users and administrators. 

To learn more about our SIP Trunk services, typical use cases, and how they can support your specific communication strategy, read our guide on selecting the best SIP trunk provider.

Benefits of SIP Trunk certification with Mitel

With this certification, Virtual-Call is authorized to label its SIP trunk service with the OpenScape Business certified ITSP badge.

The strategic combination of Virtual-Call’s SIP Trunking and Mitel’s OpenScape Business systems delivers a range of benefits that optimize communications and ensure a superior experience for customers:

1. Reliability and quality: The certification ensures that our service meets the highest standards of quality and reliability, providing clear and uninterrupted virtual calls.

2. Guaranteed compatibility: Our customers can be confident that Virtual-Call's SIP trunk service will work perfectly with the OpenScape Business V3R4 system, eliminating compatibility issues and simplifying integration.

3. Security: Our service includes robust security measures to protect your business communications, ensuring your data remains safe and secure.

4. Global support: This certification is valid in several countries, including Austria, Brazil, Germany, Spain, Switzerland, and the United Kingdom. This allows multinational companies to use our services with confidence in different regions.

Read more about solving telephony challenges for multinationals.

Commitment to excellence

Throughout this article, you have seen what the OpenScape Business V3R4 certification is, how it validates the technical quality of our SIP trunking, and which concrete benefits it brings to your organization in terms of reliability, compatibility, security, and global support. 

In other words, you now know that Virtual-Call’s certified SIP Trunking is not just “compatible” but officially tested and approved to simplify integration, reduce project risk, and deliver a consistently superior communication experience.

At Virtual-Call, we are committed to providing communication solutions that not only meet but exceed our customers’ expectations. 

This certification is another step in our continuous investment in innovation, quality, and customer satisfaction so that your teams can connect and collaborate more efficiently and securely across multiple countries.

If you are ready to turn this knowledge into practical results for your business, the next step is simple: contact us today and find out how our certified SIP trunking services can support your migration, optimize your costs, and strengthen your company’s communication strategy.

People Also Ask

To help you go one step further, we have gathered some of the most common questions about SIP trunking and unified communications. Below, you will find concise explanations that clarify core concepts and support your decision-making process.

1. What is a SIP Trunk?

A SIP Trunk is a virtual version of an analog phone line. It uses the Session Initiation Protocol (SIP) to deliver voice and other unified communications services over the Internet.

Discover the key differences between virtual and traditional phone numbers.

2. How does SIP trunking benefit businesses?

SIP trunking offers businesses cost savings, scalability, and flexibility. It allows for the integration of voice, data, and video in a single line, reducing the need for multiple physical lines.

Learn more about which is better—minutes per line or minutes per channel.

3. What is the difference between SIP trunking and VoIP?

While both SIP trunking and VoIP (Voice over Internet Protocol) deliver voice communications over the Internet, SIP trunking is specifically used to connect a private branch exchange (PBX) to the Internet, enabling multiple simultaneous calls.

4. Why is certification important for SIP trunk providers?

Certification ensures that the SIP Trunk service is compatible with specific communication systems, guaranteeing reliability, quality, and seamless integration for users.

5. What is Unified Communications?

Unified communications (UC) refers to the integration of various communication tools, such as voice, video, messaging, and collaboration, into a single, cohesive system to improve business processes and user productivity.

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