Microsoft Teams calling with SIP Gateway

Effective December 06, 2021, SIP Gateway, a solution that enables core Microsoft Teams calling functionality on compatible SIP (Session Initiation Protocol) phone models from Cisco, Poly, Yealink and AudioCodes is generally available at no additional cost.

Compatible models are:

  • Cisco IP Phones with MPP firmware (6821, 7800 series, 8800 series)
  • Polycom SIP phones (VVX series 100, 200, 300, 400, 500, 600 etc.)
  • Yealink (T20 series, T30 series, T40 series, T50 series)
  • AudioCodes 400 HD series.

SIP Gateway supports the following core Teams calling functionality:

  • Inbound and outbound calls
  • Call transfer
  • Meeting dial-in and dial-out
  • Device-based “do not disturb”
  • Voicemail with message waiting indicator.

In order to be able to use SIP Gateway, users must be licensed for Microsoft Teams Phone, have a Public Switched Telephone Network (PSTN) enablement, and common area devices require a Common Area Phone license.

For the announcement of Microsoft Teams calling with SIP Gateway, please visit:

For information on how to configure a SIP Gateway, please visit:

For more details on Teams Phone, please visit:

For more information on PSTN connectivity options, please visit:

For more details on the set up of the Common Area Phone license for Microsoft Teams:

Please contact us for more information and to request a quote.

Share article


Get Free Expert Software Licensing Consultancy For Your Organization