April 16, 2025 – PortSIP, a global leader in Unified Communications (UC) solutions for both cloud and on-premises environments, is pleased to announce a new partnership with Questblue(www.questblue.com), a leading provider of SIP trunking services. This collaboration follows the successful completion of interoperability testing between PortSIP PBX and Questblue’s SIP trunking platform.
With this certification, service providers and enterprise customers using PortSIP PBX can now seamlessly integrate Questblue’s SIP trunks for high-quality voice calling and SMS services. The joint solution ensures full compatibility and delivers a streamlined setup experience—enabling reliable, scalable communication services for UCaaS, CCaaS, CPaaS, and Cloud PBX deployments.
This partnership further reinforces PortSIP’s commitment to providing flexible, interoperable, and future-ready communication platforms for service providers worldwide.
About PortSIP
www.portsip.com
PortSIP delivers modern, all-in-one Unified Communications solutions for service providers, enterprises, and mission-critical sectors worldwide. Featuring a truly multi-tenant PBX architecture, open APIs, and fully rebrandable mobile and desktop apps, PortSIP empowers providers to deploy UCaaS, CPaaS, CCaaS, and Cloud PBX services at scale. Trusted by leading organizations including Netflix, Qualcomm, HPE, Keysight, SoftBank, T-Mobile, Siemens, and Telstra.
About QuestBlue
www.questblue.com
Since 2007, QuestBlue has been a trusted partner empowering connectivity. As a leading Cloud-based Telecommunication provider, QuestBlue specializes in delivering scalable, secure, and high-performance solutions designed to meet the evolving needs of modern businesses.
QuestBlue’s purpose-built network offers crystal-clear quality to connect worldwide through a platform that enables clients to build tailored communications infrastructure. From wholesale Voice, Messaging, PBX and Virtual Faxing, thousands of businesses relying on QuestBlue for their telecommunication needs, as they trust the technology along with unbeatable quality, top-rated support and unmatched reliability at flexible prices.
QuestBlue takes pride on reliability, responsiveness, and long-term client partnerships. With a team of experienced professionals and a commitment to continuous innovation, QuestBlue is more than a service provider—they are your strategic ally in helping your business stay ahead and connected.
