Telephone Call Log Discovery

Telephone Call Log Discovery is Not Like it Used to Be: eDiscovery Best Practices

You may think telephone call log discovery seems like a boring topic, but as ProSearch points out, call log discovery involving Microsoft Teams is totally different!

Their post (Telephone Call Log Discovery, available here) discusses how, as the world has steadily moved to using VOIP conferencing as a replacement for traditional telephony services, call information is logged in more accessible manners and may be unknowingly collected. This is especially true for Microsoft 365 tenants. Every call made and every meeting attended using Microsoft Teams is logged as part of a custodian’s data and can easily be retrieved through normal Microsoft Purview eDiscovery collections.

Chances are you already know that Microsoft Teams has seen a phenomenal uptake since the Covid pandemic sent most workers to home offices. And that current Microsoft reports estimate 270 million and growing monthly Teams users. But did you know that 80 million of those Teams users use the calls feature to carry out person to person and group call? And that on March 31, 2020, Microsoft saw a record 2.7 billion (with a “b”) meeting minutes experienced in Teams meetings in just one day? That was well before Teams popularity grew to the level it is now.


Depending on the license level, Teams can provide both VOIP and traditional telephony services from one interface. As a result, some companies are replacing traditional telephone infrastructure with services provided purely by Microsoft Teams and that makes telephone call log discovery not only a whole lot more interesting, but also discoverable at a level of detail that wasn’t previously possible because of the level of detail that M365 and Teams offers.

Want to learn more? Check out the full post by ProSearch here! It’s just one click! 😉

So, what do you think? Did you ever think telephone call log discovery could ever be this interesting? Please share any comments you might have or if you’d like to know more about a particular topic.

Disclaimer: The views represented herein are exclusively the views of the author, and do not necessarily represent the views held by my employer, my partners or my clients. eDiscovery Today is made available solely for educational purposes to provide general information about general eDiscovery principles and not to provide specific legal advice applicable to any particular circumstance. eDiscovery Today should not be used as a substitute for competent legal advice from a lawyer you have retained and who has agreed to represent you.


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