callto: working in Teams

Question

I'd like to embed in Teams a callto: link that users with urgent problems can use to get through to support staff straight away.

I've tried adaptive cards. It works for urls like www.google.com but not for callto: links, at least I can't get it to work.

I've tried html like href="callto:callto:******@myemail.xyz", but again I've not been able to get it to work.

Any ideas?

PS, here's the kind of thing I tried in adaptive cards in more detail.

{ "type": "AdaptiveCard", "$schema": "[http://adaptivecards.io/schemas/adaptive-card.json]", "version": "1.4", "body": [ { "type": "ActionSet", "actions": [ { "type": "Action.OpenUrl", "title": "Action.OpenUrl", "url": "callto:******@myemail.xyz" } ] } ] }

PPS, the link will be regulated by Power Automate. For example, it might regularly update the callto: link based on which support staff are available.

Answer 1

Currently external deep link like callto: are not supported".

We recommend you using the deeplink formats provided in below doc: https://learn.microsoft.com/en-us/microsoftteams/platform/concepts/build-and-test/deep-link-workflow?tabs=teamsjs-v2#deep-link-to-start-an-audio-video-call-with-users

Thanks, 

Prasad Das

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Answer 2

Currently external deep link like softwarecenter: are not supported.
We recommend you using the deeplink format mentioned in below doc: https://learn.microsoft.com/en-us/microsoftteams/platform/concepts/build-and-test/deep-link-workflow?tabs=teamsjs-v2#deep-link-to-start-an-audio-video-call-with-users

Thanks, 

Prasad Das

************************************************************************* 

If the response is helpful, please click "Accept Answer" and upvote it. You can share your feedback via Microsoft Teams Developer Feedback link. Click here to escalate.