Forum Discussion

Copper Contributor

Nov 08, 2021

Graph API: create a PSTN call and invite a PSTN participant

Hello everybody, We are using the MS Graph API within a C# project. After successful creating a PSTN call from our bot like described here https://docs.microsoft.com/en-us/graph/api/application-...

Copper Contributor

Feb 07, 2023

relkniw, have been looking into this issue, and it seems that when the bot makes a call between a Teams user and a PSTN, it now counts 3 identities in the call (including the bot), and escalates it to a group call, which it seems from this thread it doesn't currently support.

Is that still the case?

Thank you.

relkniw

Copper Contributor

Feb 08, 2023

yisroelperton: i don't know what exact was the cause: whether a SBC configuration or a Microsoft update. But it works now

yisroelperton
Copper Contributor
Feb 09, 2023
relkniw, thank you for that update. Which API call did you use the peer-to-peer, or group call?
I'm using this page for reference:
https://learn.microsoft.com/en-us/graph/api/application-post-calls?view=graph-rest-1.0&tabs=http#example-9-create-peer-to-peer-pstn-call-with-service-hosted-media
- relkniw
  Copper Contributor
  Feb 09, 2023
  yisroelperton peer-to-peer
  - prasanth2023
    Copper Contributor
    Jan 12, 2024
    I am developing an application using Graph API to call a PSTN number - call state changes to establishing , But not receiving call on the landline number. Also call satus is not changed to established . can someone help?