Microsoft Teams as your business phone system.
Make and receive UK landline calls directly in Microsoft Teams — number porting, SIP trunking, hosted VoIP integration. Telexico configures Microsoft Teams Phone for UK businesses using Direct Routing, with full managed support.
What we hear every week.
The frustrations behind why businesses search for microsoft teams phone system in the first place. If any of these feel familiar, the fix is straightforward.
Staff already living in Teams for chat and video
Microsoft 365 users spend most of their day in Teams. Adding phone calls into the same interface is a natural workflow consolidation — but the setup isn't trivial.
Microsoft Calling Plans are expensive and limited
Microsoft's own Teams Calling Plans are pricey per user, with limited number portability and call routing. Direct Routing via a UK SIP provider (Telexico) is typically cheaper and more flexible.
Direct Routing setup is genuinely complex
Microsoft Direct Routing connects Teams to your SIP trunk for outbound/inbound UK calls — but the configuration (Session Border Controller, dial plans, routing policies, voice routes) needs proper expertise.
Connecting Teams calling to AI receptionist or non-Teams users
Some staff are on Teams; some are on regular IP handsets; AI receptionist needs to escalate to either. Hybrid setup needs proper design.
Microsoft Teams Phone via Telexico Direct Routing
Telexico provides UK SIP trunking and managed Direct Routing for Microsoft Teams. **What's involved:** your Microsoft 365 tenant configured for Teams Phone with Direct Routing; Telexico supplies the SIP trunk (with your ported UK numbers); SBC (Session Border Controller) configured between Teams and our SIP infrastructure; dial plans and voice routes set up so staff can dial UK landlines, mobiles, international, and emergency services properly; integration with AI receptionist and any non-Teams users (IP handsets, mobile apps); call recording where required. **Result:** staff make and receive calls directly inside Teams — desktop, mobile, web. Numbers ported cleanly from existing setup. Significantly cheaper than Microsoft Calling Plans. Full managed support from Telexico's UK team.
The Telexico approach to microsoft teams phone system.
Six things our customers consistently tell us matter.
Calls directly in Teams
Staff make and receive UK landline calls in the Teams interface they're already using — desktop, mobile, web.
Cheaper than Microsoft Calling Plans
UK SIP from Telexico costs significantly less than Microsoft's per-user Calling Plans — typical savings 40-70%.
Keep your existing UK numbers
Number porting from ISDN, PSTN or existing VoIP to the Telexico SIP trunk feeding Teams — no number change needed.
Hybrid with IP handsets and AI receptionist
Mix Teams users with IP handset users with AI receptionist — all on one platform, all routing together properly.
Managed Direct Routing setup
SBC, dial plans, voice routes, emergency calling configuration — Telexico's UK engineers handle the complexity.
Call recording and reporting
Compliance-grade call recording, central reporting, retention policies — all available with Teams Direct Routing via Telexico.
Built for UK businesses standardising on Microsoft 365
Teams Phone via Direct Routing makes sense for UK businesses already running Microsoft 365, with staff comfortable in Teams for chat and video. Adding phone calls into the same workflow is natural. Telexico handles the technical complexity of Direct Routing setup so the business gets the workflow benefit without the configuration burden. Where some staff aren't on Teams (e.g. retail counter, reception), hybrid setup with IP handsets is straightforward.
How it works for businesses like yours.
Three real-world setups we deliver across the UK.
Microsoft 365-heavy professional services
Solicitors, accountants, consultancies already living in Teams — phone calls in the same interface is operational uplift.
Hybrid offices with remote and in-office staff
Hybrid working teams benefit from Teams calling — staff make/receive UK calls from anywhere with proper presence and call routing.
Larger SMEs and enterprises
20-200+ staff Microsoft 365 deployments — Direct Routing economics significantly cheaper than Microsoft Calling Plans at scale.
Why UK businesses choose Telexico for Teams Phone
Telexico provides UK SIP and managed Direct Routing for Microsoft Teams. We handle the Direct Routing setup complexity (SBC, dial plans, voice routes), supply UK numbers via porting, and provide ongoing managed support. UK provider, Wolverhampton-headquartered, UK engineers.
What you actually get from Telexico.
Honest about scope. No aggressive sales tactics, no surprise renewal jumps, no tier-1 call-centre triage. Real UK engineers, transparent pricing, one provider relationship across the stack.
UK-based provider
Wolverhampton-headquartered. Engineers cover the West Midlands daily; UK-wide install via our partner network. Real UK engineer support, UK data residency, UK contractual relationship — not US-routed SaaS.
Real engineer support
When you call Telexico, you reach someone who can actually fix things. Response SLA backed by real engineering capacity rather than call-centre headcount. Named account manager for ongoing customers.
Free infrastructure review
Every engagement starts with a no-obligation audit of your current setup. Honest recommendation — sometimes that's "stay with your current provider after negotiation." We'd rather be honest than oversell.
Transparent pricing
What you sign for is what you pay — including renewal. No teaser pricing that jumps 30-100% at year two. No mid-contract CPI shock. Predictable multi-year cost from day one.
One provider, one platform
Broadband, hosted VoIP, business WiFi, AI Receptionist, 4G/5G failover, CCTV consolidated onto one Telexico relationship. Single bill, single support number, single engineer when something needs attention.
Migration project-managed
Switching to Telexico isn't DIY. We handle contract audit, notice timing, ordering, parallel running, cutover, old-provider close-out. Customer-visible disruption typically measured in minutes.
Tailored around your business.
Tell us what you have now and what's frustrating you. We'll come back with a tailored review of where we can simplify, consolidate or improve it — no fixed-package pressure, no hard sell.
You may also want to read
What is Starlink for business
Starlink Business is SpaceX's commercial-grade satellite internet service for businesses. It uses a constellation of...
Leased line vs full fibre
Full fibre (FTTP) and leased lines are both fibre-optic business connectivity, but they're fundamentally different...
Openreach vs CityFibre
Most UK business broadband is delivered over one of two main fibre networks: Openreach (BT-owned, the incumbent, covers...
Business Broadband cost
Indicative UK pricing for business broadband — what affects the price, ranges, and a free tailored review.
Leased Lines cost
Indicative UK pricing for leased lines — what affects the price, ranges, and a free tailored review.
Free infrastructure review
Send us your current setup. We'll review what you have, what you pay, and where we can simplify.
Frequently asked questions
What is Microsoft Teams Phone Direct Routing?
Direct Routing is Microsoft's mechanism for connecting Teams to a third-party SIP provider for outbound and inbound landline calls — instead of using Microsoft's own Calling Plans. The SIP provider (Telexico) supplies UK phone numbers and the call infrastructure; Direct Routing connects Teams to it via a Session Border Controller (SBC).
Why use Direct Routing instead of Microsoft Calling Plans?
Cost (Direct Routing typically 40-70% cheaper at the per-user level), flexibility (better number portability, more call routing options), and integration (UK SIP provider can integrate Teams calling with non-Teams users, AI receptionist, IP handsets). Microsoft Calling Plans are simpler if you want one-stop-shop and don't mind the cost.
Can I keep my existing UK phone numbers?
Yes — number porting to Telexico's SIP trunk is standard. Existing UK landline numbers move across cleanly, then they're available in Teams via Direct Routing. No customer-facing number change.
What if some of my staff aren't on Teams?
Hybrid setup. Teams users get Teams calling; non-Teams users get regular IP handsets or mobile app; AI receptionist sits in front of everyone. All on the same Telexico platform, routing together properly. Common for retail, hospitality and customer-facing businesses.
Is the setup complex?
Direct Routing setup is genuinely technical — SBC configuration, dial plans, voice routes, emergency calling, Microsoft 365 admin work. Telexico's engineers handle the complexity end-to-end. Most UK SMEs going via Telexico don't need to engage their own IT team for the Direct Routing work.
What about call recording?
Standard call recording available with Teams Direct Routing via Telexico — compliance-grade recording, central retention, searchable from admin interface. Suits regulated operations (financial services, healthcare, professional services with compliance requirements).
How long does setup take and what does it cost?
Typical setup: 4-8 weeks elapsed from order to live (Microsoft 365 config, SBC setup, number porting, testing, soft launch). Indicative cost: £6-10 per user per month for Direct Routing SIP via Telexico, plus your existing Microsoft Teams Phone licence costs, plus number rental and call charges. Significantly cheaper than Microsoft Calling Plans which add £12+ per user/month for similar capability. Real quotes against your specific Microsoft 365 setup.
Apply this to your business?
Reading the guide is one thing; applying it to your specific operation is another. Send us your current setup — we'll review what you have, what fits, and where to start. No hard sell, no fixed-package pressure.