{"id":2081,"date":"2020-12-15T19:13:06","date_gmt":"2020-12-15T19:13:06","guid":{"rendered":"https:\/\/modern-workplace.uk\/?p=2081"},"modified":"2021-10-21T13:56:38","modified_gmt":"2021-10-21T13:56:38","slug":"teams-manage-unassigned-phone-numbers-with-an-audiocodes-sbc","status":"publish","type":"post","link":"https:\/\/modern-workplace.uk\/?p=2081","title":{"rendered":"Teams – Manage Unassigned Phone Numbers (with an Audiocodes SBC)"},"content":{"rendered":"\n

Unassigned numbers management <\/strong>is essentially the capability of redirecting calls to a number in a company DDIs range but not assigned to any user <\/strong>to a switchboard\/voicemail\/automatic answer.<\/p>\n\n\n\n

At the moment there are at least three different Uservoice posts requiring to have in Teams management for the above similar to the one we had in Skype for Business on-premises.<\/p>\n\n\n\n

Whilst we wait for this feature to be released, the easiest way to manage unassigned numbers it to work on the SBC <\/strong>(in my scenario, AudioCodes<\/strong>)<\/p>\n\n\n\n

My objective: redirect all the calls from the PSTN to an unassigned number to a switchboard<\/strong><\/p>\n\n\n\n

My scenario: Direct routing already configured and working. All the calls from the PSTN are sent to Teams<\/strong><\/p>\n\n\n\n

Note: I took the base idea from this post on Reddit (if the original author wants to be quoted here, more than happy to do that) <\/em>https:\/\/www.reddit.com\/r\/MicrosoftTeams\/comments\/h7u9tx\/teams_direct_routing_and_unassigned_numbers\/<\/a> <\/p>\n\n\n\n

So, every time the SBC will try to forward a call to Teams and the number is not assigned, we will have SIP response 404 Not Found<\/strong><\/em><\/p>\n\n\n\n

First step: add 404 to the Alternative Reasons Set<\/em><\/strong><\/p>\n\n\n\n

Signaling & Media -> SBC -> Routing -> Alternative Reasons Set<\/span><\/strong><\/code><\/pre>\n\n\n\n
\"\"<\/a>
Alternative Reasons Set<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Adding 404<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
404 added to the Alternative Reasons Rules<\/figcaption><\/figure>\n\n\n\n
Second Step: Create an IP Group that duplicates the existing Teams Direct Routing IP Group (I used the same Proxy Set, IP Profile and Media Realm of the existing Teams IP Group)<\/em><\/strong>. I will call is “Unassigned-Numbers<\/span>“<\/strong><\/p>\n\n\n\n
Signaling & Media -> Core Entities -> IP Groups<\/span><\/strong><\/code><\/pre>\n\n\n\n
\"\"<\/a>
Add IP Group<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Unassigned-Numbers IP Group<\/figcaption><\/figure>\n\n\n\n
Third Step: Add a route (in IP-to-IP routing) after the one going to Teams. This one will use the ‘Alternative Route Ignore Inputs’ and have, as a destination the “Unassigned-Numbers” IP Group<\/em><\/strong><\/p>\n\n\n\n
Signaling & Media -> SBC -> Routing -> IP-to-IP Routing<\/span><\/strong><\/code><\/pre>\n\n\n\n
\"\"<\/a>
IP-to-IP Routing<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Additional IP-to-IP Route<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Route added after the one to Teams Direct Routing<\/figcaption><\/figure>\n\n\n\n
Fourth Step: define and Outbound Manipulation pointing to the “Unassigned-Numbers” IP Group  that re-writes the destination URI, replacing the original called number with the number of the switchboard<\/em><\/strong> (I have called it “Unassigned-Numbers-Manipulation<\/span>“)<\/em><\/strong><\/p>\n\n\n\n
Signaling & Media -> SBC -> Manipulation -> Outbound Manipulation<\/span><\/strong><\/code><\/pre>\n\n\n\n
\"\"<\/a>
Changing the callee number to the switchboard one<\/figcaption><\/figure>\n\n\n\n
What we have to do now, is just testing. You will see the call go to the Teams Direct Routing IP Group and then go to the Unassigned-Numbers IP Group<\/p>\n\n\n\n
\"\"<\/a>
Callee number manipulated<\/figcaption><\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Unassigned numbers management is essentially the capability of redirecting calls to a number in a company DDIs range but not assigned to any user to a switchboard\/voicemail\/automatic answer. At the moment there are at least three different Uservoice posts requiring to have in Teams management for the above similar to the one we had in […]<\/p>\n","protected":false},"author":1,"featured_media":2098,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","twitterCardType":"","cardImageID":0,"cardImage":"","cardTitle":"","cardDesc":"","cardImageAlt":"","cardPlayer":"","cardPlayerWidth":0,"cardPlayerHeight":0,"cardPlayerStream":"","cardPlayerCodec":"","footnotes":""},"categories":[758,779,753,752,757],"tags":[761,762,763,759,751,77,755],"class_list":["post-2081","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-758","category-audiocodes","category-microsoft365","category-microsoft-teams","category-office-365","tag-audiocodes","tag-microsoftteams","tag-audiocodes-2","tag-microsoft-365","tag-microsoft-teams","tag-office-365","tag-teams"],"_links":{"self":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/2081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2081"}],"version-history":[{"count":4,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/2081\/revisions"}],"predecessor-version":[{"id":2103,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/2081\/revisions\/2103"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/media\/2098"}],"wp:attachment":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}