
Maintel SIP Trunking
Phasing Out of Traditional PSTN and ISDN
Businesses are facing significant challenges as traditional PSTN and ISDN services are phased out in favour of full fibre. While migrating to SIP is essential to stay ahead, it also requires careful planning to ensure business continuity and the flexibility to adapt call routing to changing needs.
Legacy systems often fall short in providing the flexibility that modern businesses require, leaving them unprepared for unpredictable customer demands, which can result in service disruptions and potential damage to their reputation. Embracing new voice technologies presents further challenges, as many organisations struggle to balance security, control costs, and maintain consistent performance.
Maintel SIP Trunking
Maintel’s SIP solution offers a scalable, flexible, and cost-effective telephony service, tailored to meet the evolving needs of modern businesses. Whether you’re upgrading from legacy ISDN systems or optimising an existing SIP infrastructure, Maintel’s SIP ensures a seamless transition.
With resiliency built in as standard, our solution integrates effortlessly with unified communications and customer experience platforms, providing an ideal fit for businesses aiming to modernise and future-proof their communications.
Maintel SIP can be deployed over public, private, or directly integrated into cloud voice services – including UCaaS or CCaaS solutions – ensuring your business maintains high standards of call quality and reliability.
Maintel’s SIP Offers Flexibility & Control
Maintel’s SIP service is built for fast deployment and seamless integration. With an intuitive self-service portal, you can easily manage and monitor your services, while our 24/7 support and security monitoring provide reassurance.
Whether you require rapid scalability or enhanced security, Maintel’s SIP offers the flexibility and control needed to stay ahead.
Managed and maintained entirely by Maintel, our SIP service currently support multiple channels, serving UC and CC customers across sectors like public services, finance, retail, and enterprise throughout the UK.
Powered by carrier-grade infrastructure and adhering to industry security protocols, Maintel’s SIP operates from our core infrastructure, providing seamless access to a suite of connected cloud services, applications, and solutions.
As organisations continue to evolve, the need for communication solutions that offer flexibility, scalability, and security is increasing. With the growth of hybrid working and a focus on cost optimisation, organisations require solutions that can seamlessly adapt to their shifting demands.
The discussion has moved beyond just the PSTN – it’s now about empowering businesses to enhance their existing SIP infrastructure, delivering greater flexibility, resilience, and operational efficiency.
Integrations
Secure, Cost Effective SIP Solution
Control Costs
Predictable pricing with scalable channels, allowing businesses to grow without unexpected costs.
Business Agility
Easily scale the number of SIP channels up or down to meet business demand.
Business Continuity
Built-in multi-carrier redundancy and geographic failover keep your communications running, even in the face of disruption.
Enhanced Cyber security protection
Advanced security through Session Border Controllers (SBCs), protecting against call fraud, Denial of Service (DoS) attacks, and other vulnerabilities.
Multi-cloud native
Certified to integrate with industry-leading platforms such as Microsoft Teams, Genesys Cloud, RingCentral, Netcall and our UC private cloud services. It also seamlessly connects with any on-premise voice solution, either natively or via a gateway, ensuring maximum compatibility and performance.
Why Maintel
Maintel has successfully transitioned hundreds of customers from legacy telephony systems to a wide range of modern solutions, including private, MS Teams, and cloud-based technologies.
Our experience in critical sectors like Critical National Infrastructure and Healthcare has equipped us with deep insights into the complexities and challenges of these transitions.
We’ve developed an operational capability that not only supports your migration but ensures that your most critical telephony infrastructure is seamlessly integrated with your business communication systems.
By combining SIP with a full suite of communications services and partnering with best-of-breed carriers, we deliver tailored, scalable, and secure solutions that align perfectly with your business objectives.
“Confidence and trust are the benefits of a long-term relationship. We assumed Maintel would deliver on this project the way they always have. And they did.”
Partner with Maintel and unlock your full potential
Whether you’re modernising legacy systems, scaling for growth, or exploring AI-powered solutions, our expert team is here to guide you every step of the way.
Get in touch to discuss your unique requirements and see how our tailored solutions can help you drive efficiency, enhance customer satisfaction, and future-proof operations.
Please fill out the form or call us on 0344 871 1122
Our Services
We consult on the design, deploy and manage network infrastructures, platforms and software, including our own, that keep ongoing operations running smoothly and dependably.
Security & Connectivity
Securely connect your people, partners, and guests to your cloud platforms, applications, and data while safeguarding against cyber threats.
Our Platforms
Our platforms are designed to empower organisations with the flexibility, control, and insight needed to thrive in today’s dynamic digital landscape.







