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 Pending 7.20A.200.055
Mediant 800 SBC Pending 7.20A.200.055
Mediant 2600 SBC Pending 7.20A.200.055
Mediant 4000 SBC Pending 7.20A.200.055
Mediant 1000B SBC Pending 7.20A.200.055
Virtual Edition SBC Pending 7.20A.200.055
Ribbon Communications SBC 5110 Pending V6.2
SBC 5210 Pending V6.2
SBC 5400 Pending V6.2
SBC 7000 Pending V6.2
SBC SWe Pending V6.2
SBC 1000 Pending V7.0.2
SBC 2000 Pending V7.0.2
SBC SWe Lite Pending V7.0.4
Thinktel Think 365 SBC Pending V1.4
Oracle AP 3900 Pending Pending Pending
AP 4600 Pending Pending Pending
VME Pending Pending Pending
TE-SYSTEMS anynode Pending Pending Pending