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Get Prices → 📞 0121 268 0121Microsoft Teams is a collaboration platform — messaging, video, file sharing. By default, calling within Teams only works between Teams users. To call external phone numbers (customers, suppliers, anyone on a normal phone), you need to add phone system capabilities. There are two ways to do this:
Direct Routing is almost always cheaper, and often gives you better UK number options and more control over call routing.
In simple terms: Telexico provides a SIP connection between Microsoft's servers and the public telephone network. When someone in your business calls an external number from Teams, the call travels from Teams to Telexico's Session Border Controller (SBC), then out to the phone network. Incoming calls reverse this path.
Microsoft Teams is a collaboration platform — messaging, video, file sharing. By default, calling within Teams only works between Teams users. To call external phone numbers (customers, suppliers, anyone on a normal phone), you need to add phone system capabilities. There are two ways to do this:
Direct Routing is almost always cheaper, and often gives you better UK number options and more control over call routing.
In simple terms: Telexico provides a SIP connection between Microsoft's servers and the public telephone network. When someone in your business calls an external number from Teams, the call travels from Teams to Telexico's Session Border Controller (SBC), then out to the phone network. Incoming calls reverse this path.
You don't see any of this. From the user's perspective, they just make and receive calls directly in Teams on their PC, Mac or phone.
Many businesses use Direct Routing for office staff on Teams and hosted VoIP for reception desks with physical handsets. Telexico can manage both from one account.
Telexico sets up MS Teams Direct Routing for UK businesses — including number porting and Teams tenant configuration.
Explore Telexico's VoIP Phone Systems service or read related guides:
| Option | What It Is | Cost/User/Mo | Flexibility |
|---|---|---|---|
| Microsoft Calling Plan | Microsoft provides UK phone lines directly | £8–£12 extra | Low — fixed Microsoft pricing |
| Direct Routing | Use a third-party SIP provider (like Telexico) | £5–£15 extra | High — competitive pricing, UK numbers |
| Scenario | Better Option | Why |
|---|---|---|
| Team already uses Teams heavily | Direct Routing | Keeps everything in one app |
| Need deskphones in the office | Hosted VoIP | Physical phones not well-supported in Teams |
| Complex call routing / IVR | Hosted VoIP | More feature-rich call handling |
| Remote-first team, 365 already paid | Direct Routing | No extra software cost |
| Regulated industry (FCA) | Hosted VoIP or Direct Routing | Both can provide compliant call recording |
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"Switched our entire office phone system and broadband. The team handled everything, zero downtime. Saving over £200 a month compared to our old BT contract."
"Had failover installed after losing internet for a whole day. Assure X kicks in within seconds. Our team didn't even notice when the main line dropped last week."
"Our dental practice needed reliable phones and fast broadband. Telexico sorted everything in one visit. The AI receptionist handles after-hours calls brilliantly."
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