Did you know Teams can work with your existing phone system (PBX)?
Google Voice planned
A PRACTICAL WAY TO EXTEND YOUR EXISTING SIP PBX WITH TEAMS
BaerTel SBC lets Microsoft Teams work alongside your existing SIP
PBX — without forcing replacement or disrupting call flow.
It’s built for real-world environments where existing PBXs remain in
service.
How BaerTel SBC connects your phone system (PBX) to Teams
Example call flow using a SIP-based PBX (freePBX shown).
Any standards-based SIP PBX with extensions and outbound routing
can be used.
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Calls are encrypted end-to-end between Teams and your PBX.
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Teams connects to your PBX through BaerTel SBC — without replacing it.
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Teams adds collaboration features while your PBX continues to handle calling and routing.
What adding Teams enables
It adds meetings and collaboration, while your PBX continues to handle calling and routing.
Same extension behavior
- Teams and desk phones share the same PBX extension
- Incoming calls can ring both Teams and the desk phone
- Teams users can call PBX users using extension dialing
- Teams users can call external phone numbers through the PBX
Your PBX stays in control
- PBX voicemail, feature codes, and call routing still apply
- External calling continues to route through your PBX
- If Teams connectivity is unavailable, desk phones and external calling continue normally
Adds Teams capabilities
- Teams meetings can be created and include external participants
- Teams users can add PBX extensions, PBX conference bridges, and external phone numbers to Teams calls and meetings.
FreePBX® is a registered trademark of Sangoma Technologies. Microsoft Teams® is a registered trademark of Microsoft Corporation. All trademarks are the property of their respective owners. BaerTel is not affiliated with or endorsed by these companies.
Current Status
BaerTel SBC is available in early-production for Microsoft Teams integration. Availability is limited and onboarding is currently manual. Google Voice support is planned but not yet validated.
Ready to test this in your environment?
Early-production. Limited availability. Month-to-month with no long-term contract.
No SLA, no geo-redundant failover guarantees, and no long-term commitment required to try it.
| Tier | Teams users | Monthly price |
|---|---|---|
| 1 | 1–10 | $69 |
| 2 | 11–25 | $99 |
| 3 | 26–50 | $149 |
| 4 | 51–100 | $249 |
| 5 | 101–250 | $399 |
| 6 | 251–500 | $599 |
| Add-On | +100 seats | $149 |
We support environments operated by individual businesses, internal IT teams, consultants, and service providers without forcing PBX replacement or disruptive migrations.
Our work is led by hands-on experience with standards-based SIP PBX platforms, along with Microsoft Teams Direct Routing in real-world integration scenarios.