On a call with RBC analyst Alex Zukin on Thursday, Slack CEO Stewart Butterfield announced: “We’re working on Teams integrations for calling features,”.
So what could it be?
Microsoft hasn’t replied to any request for comment, but a Slack spokesperson said Slack will be delivering this integration using publicly available APIs (Thanks Mary Jo Foley). No timeline for the integration was shared.
So we know Microsoft and Slack are not working directly together on this. Slack will have to “integrate” through the publicly available routes/API’s. This is how Slack integrates today with OneDrive (accessing documents) and Outlook (calendar).
What does “calling” mean?
Does “calling” literally mean VoIP Calling, or does it mean VoIP and Video, or maybe even VoIP Video and Text chat? Calling tends to mean 1:1 or person to person, rather than meetings.
1:1 calling would make sense since Teams meetings use Microsoft specific propriety signalling which you can’t connect to unless you are certified by Microsoft (like the 3 cloud video interop (CVI) vendors, Poly, Pexip and BlueJeans, soon to be 4 with Cisco coming). There is no public API access to this, in all cases, Microsoft is in direct partnership with those vendors.
So if it is 1:1 Calling, how could that work with “publicly available APIs”?
There is no simple open signalling standard/API for another system to directly call a Microsoft Teams user.
Microsoft enables 1:1 calling between Skype for Business (Server and Online) and Microsoft Teams, so in theory, Slack could route calls via the own run Skype for Business Server infrastructure or emulate a Skype for Business Federation. This would allow 1:1 voice, video and chat if all the right codecs and signalling were supported. In Microsoft language, this is called “federation”.
Microsoft is also rolling out Teams to Skype consumer connectivity, again 1:1, user to user, so Slack could emulate this to do peer to peer calling, video and chat.
Note these are direct private chat, not team chat in a multi-person team workspace in either product.
It could also be routing Slack calls via an SBC into Microsoft Teams via Direct routing, but this would literally only be audio calls and would only work if the Microsoft Teams user was Phone system enabled. Most Teams users won’t have direct routing so I doubt it’s this.
Original Source
CNBC Slack is working on integrating with rival Microsoft Teams for calls, says CEO Stewart Butterfield
Sourced from: TomTalks Blog. View the original article here.
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