Microsoft Teams Direct Routing: built for enterprise scale
As a trusted Teams direct routing provider Resonate connects Microsoft Teams to the public telephone network through a resilient, fully managed service that gives you more control, more flexibility, and the confidence to support hybrid, global, and complex voice environments without compromising performance or compliance.
The Challenge
Why teams voice connectivity gets complex
Calling Plans can limit flexibility
Standard options do not always provide the routing control, commercial flexibility, or integration depth enterprise organisations need.
Legacy and hybrid estates
Existing PBXs, carriers, analogue devices, and specialist voice requirements often need to coexist with Teams rather than disappear overnight.
Global voice needs differ by region
Large organisations need a solution that supports number retention, local compliance, and consistent service across multiple geographies.
Direct routing needs operational expertise
Deploying and managing microsoft direct routing at scale requires deep SBC, SIP, monitoring, and service-management capability.
Microsoft Direct Routing Managed Service
Direct Routing connects Microsoft Teams to the public telephone network using certified Session Border Controllers (SBCs) and SIP, enabling users to make and receive external calls through Microsoft Teams.
As a specialist Teams Direct Routing provider, Resonate delivers a fully managed Microsoft Direct Routing service that includes resilient SBC infrastructure, SIP connectivity, number management, call routing, proactive monitoring, performance management and ongoing support.
The service enables organisations to connect Microsoft Teams Phone with existing telephony environments, integrate legacy PBX and carrier services, support international voice requirements, and provide a flexible, scalable voice platform for modern communications
The value of Microsoft Teams Direct Routing
Gain a flexible alternative to Microsoft Calling Plans with greater control over carriers, routing, and commercial models
Retain numbers, retain or migrate SIP, integrate legacy voice estates, and support hybrid migration without disrupting business continuity.
Deliver resilient, secure voice through a managed platform designed for global coverage, compliance, and 24x7x365 support
Simplify operations with monitoring, reporting, and service management wrapped around your Teams voice environment
Resonate quickly demonstrated they had the technical skills and experience to enable Direct Routing for our organisation. The whole implementation process was managed without any impact on the business – Gary Lewis, Atrium Underwriters
Why Resonate
Trusted to deliver business-critical voice services
As specialists in solutions from multiple providers such as Microsoft Teams, Cisco Webex and Ring Central Resonate delivers a structured approach to help organisations move their phone systems to the cloud and transition from legacy infrastructure. Our methodology ensures minimal disruption while enabling you to modernise your communications platform and fully prepare for the pstn switch off deadline
Leading experts
As a specialist direct routing provider, we design and manage complex, global Teams voice environments.
Seamless hybrid voice estate integration.
We connect Microsoft direct routing with legacy PBX, SIP, and multi-carrier and platform estates without adding complexity.
Resilient, fully managed voice service
Our direct routing solution combines resilient infrastructure, proactive monitoring, and 24×7 support.
Track record at scale
We have delivered secure, high-quality voice services globally for the largest enterprise and public sector customers
FAQs
01What is Microsoft direct routing?
Microsoft direct routing is the method of connecting Microsoft Teams to the public telephone network using certified Session Border Controllers and SIP services, so users can make and receive external calls in Teams.
02Why would I choose a direct routing provider instead of Calling Plans?
A direct routing provider uk gives organisations greater flexibility over carriers, routing, number management, and integration with existing telephony environments than standard Calling Plans.
03Can I keep my existing SIP provider?
Yes, with Resonate you have the option of remaining with your existing SIP providers or of migrating SIP to Resonate.
04Can I keep my existing phone numbers?
Yes, if you migrate you SIP to Resonate we will port your existing phone numbers for you.
05Can Microsoft direct routing work with legacy systems?
Yes and Resonate has a track record in complex voice and has migrated many large enterprises to cloud-based voice solutions, while ensuring legacy infrastructure and analogue endpoints are integrated where required.
06Is direct routing suitable for global organisations?
Yes, Resonate’s direct routing solutions is globally available solution which ensures compliance to local regulations, managed SBC infrastructure across multiple regions and 24 x 7 support.
07What does a managed direct routing service include?
Customers can select managed service elements include SIP, PSTN connectivity, SBC infrastructure, monitoring, service availability and quality reporting, number management, and 24×7 support.
08What is a Session Border Controller (SBC) in Microsoft Teams Direct Routing?
A Session Border Controller (SBC) provides secure connectivity between Microsoft Teams and the public telephone network (PSTN). It manages call routing, security, interoperability and resilience for Direct Routing deployments.
09Which SBC vendors are supported for Microsoft Teams Direct Routing?
Microsoft certifies a range of SBC vendors including AudioCodes, Ribbon and Oracle. Resonate designs and supports Direct Routing solutions using leading Microsoft-certified SBC platforms.
10Can an SBC help improve Teams call quality?
Yes. Properly configured SBCs can help optimise voice routing, support resilience and provide valuable troubleshooting data when investigating call quality issues.