List of Session Border Controllers certified for Direct Routing

Microsoft partners with selected Session Border Controllers (SBC) vendors to certify that their SBCs work with Direct Routing.

With each vendor, Microsoft:

  • Jointly works with the SBC vendors on the SIP interconnection protocols.

  • Performs intense tests via a third-party lab; only devices that passed the tests are certified.

  • Runs daily tests with all certified devices in production and pre-production environments. Validating the devices in pre-production environments guarantees that new versions of Direct Routing code in the cloud will work with certified SBCs.

  • Has a joint support process with the SBC vendors.


    Microsoft only supports Phone System if a certified device or devices are connected via Direct Routing. Microsoft reserves the right to reject support cases where a non-certified device is connected to the Phone System via Direct Routing.

The table below lists devices certified for Direct Routing.

Learn more about Direct Routing. If you have any questions about SBC certification program for Direct Routing please email to

Vendor Product Non-Media Bypass Media Bypass Software Version
Audiocodes Mediant 500 SBC 7.20A.250
Mediant 800 SBC 7.20A.250
Mediant 2600 SBC 7.20A.250
Mediant 4000 SBC 7.20A.250
Mediant 1000B SBC Pending 7.20A.250
Mediant 9000 SBC 7.20A.250
Virtual Edition SBC 7.20A.250
Ribbon Communications SBC 5110 V6.2
SBC 5210 V6.2
SBC 5400 V6.2
SBC 7000 V6.2
SBC SWe V6.2
SBC 1000 v8.0.1
SBC 2000 v8.0.1
SBC SWe Lite v8.0.1
Thinktel Think 365 SBC Pending V1.4
Oracle AP 1100
AP 3900
AP 4600
AP 6300
AP 6350
TE-SYSTEMS anynode v3.16.2

To give us product feedback about Teams, such as ideas for new features, please visit Uservoice Note the certification granted to a major version. That means that firmware with any number in the SBC firmware following the major version is supported.