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Blocked numbers still able to reach user from Auto Attendant

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Highlighted
ricom1750
Occasional Contributor

Discovered by accident today the following: A Teams user blocks an external number. If that external number calls the user's DID directly, the call eventually gets disconnected without the Teams user being aware of anything. However, if the external caller goes into an auto-attendant and then chooses that particular Teams user, they get transferred and then can ring and leave voice messages the same as if they were not blocked. Is this expected behavior? Maybe there is another way that the number should be blocked on the back end side of things.

5 Replies
Hi @ricom1750

That is interesting behaviour - you would expect the block to occur across both DID and the Auto Attendant.

I would recommend you raise this with designation BUG: at Teams Uservoice

https://microsoftteams.uservoice.com/forums/555103-public?query=blocked%20auto%20attendant

It would also be a good question to raise in the next Teams AMA here on the community.

AFAIK, there is no way currently to block PSTN calls on the backend across the whole organisation, with this uservoice being raised

https://microsoftteams.uservoice.com/forums/555103-public/suggestions/35993749-block-pstn-callers

Hope that answers your question. It would be good to see both a close down on the Auto Attendant and the ability to block numbers on an org basis.

Best, Chris

@Christopher HoardThanks for the response. I have raised the issue as a bug now. I'm just learning my way around Teams now.

Solution

@ricom1750 

 

If you wish to block an external number calling any number in your organisation you would do this either in your SBC if using direct routing or via the Set-CsInboundBlockedNumberPattern powershell for cloud phone system.

 

I don't really see this as a bug, more a user request for a feature to allow people to block forwarded calls based on their originator. I can think of scenarios where it's not desirable, for example would you expect a helpdesk using a Call Queue to be able to individually block specific callers they didn't like.

I, personally, view it as a bug. If the user has blocked the number then they expect that number to be blocked regardless of whether it’s direct dial or part of auto-attendant. You cannot expect to block a number only for there to be a way around it - this shouldn’t be contradictory and should honour the block.

Best, Chris

@Steven CollierI figured out how to implement the Set-CsInboundBlockedNumberPattern for a number and it blocked it globally including trying to call into Call Queues and Auto-Attendants. It took about 40 minutes from when I committed the setting to when it was implemented, so that confused me for a bit. Docomentation on the BlockedNumberPattern PS commands is a bit sparse, so I wasn't sure it would work in Teams, but it did. So really there is a solution already in place to accomplish what I needed.

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