{"id":1317,"date":"2021-10-13T16:05:31","date_gmt":"2021-10-13T16:05:31","guid":{"rendered":"https:\/\/regroove.ca\/stellark\/?p=1317"},"modified":"2023-02-24T16:49:20","modified_gmt":"2023-02-24T16:49:20","slug":"teams-voice-external-calls-being-blocked","status":"publish","type":"post","link":"https:\/\/regroove.ca\/stellark\/2021\/10\/13\/teams-voice-external-calls-being-blocked\/","title":{"rendered":"MS Teams Incoming External Calls Blocked"},"content":{"rendered":"\n<p>This was a fun little mess to troubleshoot and in the end the solution was quite unexpected and a little alarming (sigh)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What?<\/h2>\n\n\n\n<p>Some time recently all incoming calls from external callers stopped notifying both the desktop and client Teams apps.  This issue did not affect calls coming from Call Queues nor did it affect calls to Teams mobile apps.  This was a serious head banging and hair pulling issue that affected every user in our organization.  What the heck Teams?!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">So What?<\/h2>\n\n\n\n<p>After much, much troubleshooting and even more online searching for similar reported scenarios no solution could be found&#8230; so reluctantly we had to open a support ticket with Microsoft 365 (sigh)  The issue persisted and the support ticket remained open without resolution for over a month.  Every now and again I would attempt to review the issue and hope to find something I&#8217;d missed in previous troubleshooting attempts.  And then&#8230;BAM!  I found the culprit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Now What?<\/h2>\n\n\n\n<p>The fix for the issue was quite alarming (head shaker) and I am convinced this is a &#8220;bug&#8221;.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Fix<\/h2>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color has-medium-font-size\">Teams Voice &#8211; Caller ID Policy<\/p>\n\n\n\n<p>If this is set to &#8220;Enabled&#8221; and you are experiencing the issue described in this post then &#8220;Disable&#8221; it and test if external calls to either Teams client or web apps start working.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"904\" height=\"174\" src=\"https:\/\/regroove.ca\/stellark\/wp-content\/uploads\/sites\/3\/2021\/10\/image.png\" alt=\"\" class=\"wp-image-1318\" srcset=\"https:\/\/regroove.ca\/stellark\/wp-content\/uploads\/sites\/3\/2021\/10\/image.png 904w, https:\/\/regroove.ca\/stellark\/wp-content\/uploads\/sites\/3\/2021\/10\/image-300x58.png 300w, https:\/\/regroove.ca\/stellark\/wp-content\/uploads\/sites\/3\/2021\/10\/image-768x148.png 768w\" sizes=\"(max-width: 904px) 100vw, 904px\" \/><\/figure>\n\n\n\n<p>This setting should NOT break incoming external calls.  This setting is supposed to&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p><strong>Block incoming caller ID<\/strong>: Turn on this setting to block the caller ID of incoming calls from being displayed.<\/p><cite><a href=\"https:\/\/docs.microsoft.com\/en-us\/microsoftteams\/caller-id-policies\">Manage caller ID policies in Microsoft Teams &#8211; Microsoft Teams | Microsoft Docs<\/a><\/cite><\/blockquote><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Additional Tip<\/h2>\n\n\n\n<p>If Teams Admin portal will not allow you to save the policy after you disable the Caller ID setting (which was the case for me) then use PowerShell and it will work.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted has-luminous-vivid-orange-color has-text-color has-normal-font-size\">Set-CsCallingLineIdentity -Identity \"MyBlockingPolicy\" -BlockIncomingPstnCallerID $false<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>This was a fun little mess to troubleshoot and in the end the solution was quite unexpected and a little alarming (sigh) What? Some time recently all incoming calls from external callers stopped notifying both the desktop and client Teams apps. This issue did not affect calls coming from Call Queues nor did it affect &hellip; <a href=\"https:\/\/regroove.ca\/stellark\/2021\/10\/13\/teams-voice-external-calls-being-blocked\/\"><\/a><\/p>\n","protected":false},"author":11,"featured_media":1319,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[298,300,297,299,302,289,301],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MS Teams Incoming External Calls Blocked - Stephanie Kahlam<\/title>\n<meta name=\"description\" content=\"Teams Voice external calls being blocked\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/regroove.ca\/stellark\/2021\/10\/13\/teams-voice-external-calls-being-blocked\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MS Teams Incoming External Calls Blocked - 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