Connect Microsoft Teams to the PSTN with Direct Routing. Keep your existing numbers, get competitive per-minute rates, and maintain full control of your voice infrastructure.
PSTN connectivity via certified SBC
Port existing DIDs to Teams seamlessly
Calls appear natively in the Teams app
Lower cost than Microsoft Calling Plans
Connect Microsoft Teams to the PSTN with IPComms SIP trunks
What you need before starting:
Requirements:
- Microsoft 365 with Teams Phone license
- Certified SBC (AudioCodes, Ribbon, etc.)
- IPComms SIP trunk credentials
- Public IP for SBC
Point your SBC to IPComms:
SIP Server: sip.ipcomms.net
Port: 5061 (TLS required for Teams)
Transport: TLS
Codec: G.711 ulaw preferred
SRTP: RequiredRegister your SBC with Teams:
Teams Admin Center > Voice > Direct Routing
Add SBC: sbc.yourdomain.com
Port: 5061
Enabled: YesConfigure call routing:
PSTN Usage: US-Domestic
Voice Route: IPComms-Route
Pattern: ^\+1(\d{10})$
PSTN Gateway: sbc.yourdomain.comEnable users for Direct Routing:
PowerShell:
Set-CsPhoneNumberAssignment -Identity user@domain.com
-PhoneNumber "+12125551234"
-PhoneNumberType DirectRoutingSimple, transparent pricing for Microsoft Teams PSTN connectivity.
Best for smaller Teams deployments
Scale without channel limits
Direct Routing connects Teams Phone System to the PSTN via your own SBC and SIP trunk provider, giving you more control and lower costs than Microsoft Calling Plans.
Any Microsoft-certified SBC: AudioCodes, Ribbon (Sonus), Oracle, Cisco CUBE, and others.
Yes, we support full number porting. Port your existing numbers to IPComms and route them to Teams.
Direct Routing with IPComms typically costs 50-70% less than Microsoft Calling Plans, especially for high-volume users.
Get PSTN connectivity for Microsoft Teams with Direct Routing. Lower cost than Calling Plans.