{"id":339,"date":"2013-06-07T01:01:10","date_gmt":"2013-06-06T23:01:10","guid":{"rendered":"http:\/\/blog.lync2013.org\/?p=339"},"modified":"2026-03-25T20:38:20","modified_gmt":"2026-03-25T20:38:20","slug":"lync-online-hybrid-deployment-with-split-domain-demystified","status":"publish","type":"post","link":"https:\/\/modern-workplace.uk\/?p=339","title":{"rendered":"Lync Online Hybrid Deployment with Split Domain Demystified"},"content":{"rendered":"<p><span style=\"font-family: Georgia, Palatino;\">After the sudden death of Lync Hybrid Voice, I have tried to figure out what the scenario will\u00a0be from here to the release of Enterprise Voice for Lync Online \/ Office 365 customers.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Customers with an \u201cOffice 365 Dedicated Plan\u201d will have additional solutions available, different from the one that I am going to describe here (probably I will talk about that and the related scenarios for SIP trunk providers in a different post).<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">For a good number of companies the compromise between a completely \u201conline\u201d scenario (with no Enterprise Voice) and a full-blown on-premises scenario has now a name: Lync Online Hybrid Deployment with split domain.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">There are a couple of &#8220;documents&#8221; that made my day :<\/span><\/p>\n<ul>\n<li><span style=\"line-height: 15px; font-family: Georgia, Palatino;\"><strong>Microsoft Lync Hybrid Scenarios<\/strong> (TechEd 2013 session OUC-B327)<\/span><\/li>\n<li><span style=\"font-family: Georgia, Palatino;\"><a href=\"http:\/\/channel9.msdn.com\/Events\/TechEd\/NorthAmerica\/2013\/OUC-B327#fbid=p6FvjPj1-GW\">http:\/\/channel9.msdn.com\/Events\/TechEd\/NorthAmerica\/2013\/OUC-B327#fbid=p6FvjPj1-GW<\/a><\/span><\/li>\n<\/ul>\n<ul>\n<li><span style=\"font-family: Georgia, Palatino;\"><strong>MSPartnerTech<\/strong> channel on YouTube<\/span><\/li>\n<li><span style=\"font-family: Georgia, Palatino;\"><a href=\"http:\/\/www.youtube.com\/watch?v=nY5rXYEjc-U&amp;feature=c4-overview&amp;list=UUGlSbMg5to7RaBY7PM926jA\">http:\/\/www.youtube.com\/watch?v=nY5rXYEjc-U&amp;feature=c4-overview&amp;list=UUGlSbMg5to7RaBY7PM926jA<\/a><\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1132\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube-300x187.png\" alt=\"SplitDomain05_YouTube\" width=\"500\" height=\"312\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube-300x187.png 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube-200x124.png 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube-580x362.png 580w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain05_YouTube.png 903w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">I will try to summarize them and to \u201cfill in the gaps\u201d.<\/span><\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<h4><span style=\"font-family: Georgia, Palatino;\">Split Domain: High Level Overview<\/span><\/h4>\n<p><span style=\"font-family: Georgia, Palatino;\">This scenario requires and on-premises deployment of Lync and an agreement with an Office 365 \/ Lync 2013 online multi-tenant.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">This solution allows enabling our Lync users to Lync online or to Lync on-premises, leaving to the Lync administrator the capability to migrate them from one situation to the other one and vice-versa smoothly.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Before the last release of Lync 2013 online split domain meant literally having two SIP domains, one for online users and one for on-premises users.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Now this is history and <strong>the hybrid deployment with split domain allows you to enable users to Lync on-premises or online keeping a unique SIP domain<\/strong>.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The decision on \u201cwhere\u201d to locate a user will depend from the user profile \/ required Lync features (I will get into why that is in just a minute).<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Split domain now is like \u201cextending\u201d your domain to include both online and on-premises: online users will have their workloads (i.e. instant messaging, conferencing, audio video conferencing) on the cloud while on-premises users will have their workload on-premises.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><strong>Mixed workloads (the aforementioned hybrid voice) are no longer supported<\/strong> for Lync (it is also recommended to have Exchange and SharePoint deployed online or on-premises according to the location of the user, but this in not mandatory and you could have different solutions like a Lync on-premises user with an Exchange voice mail online).<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The presentation does not explain how the signaling and (more important) media traffic flows in the hybrid deployment with split domain.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Although in one of the slides, we have the phrase \u201cMedia optimally routed on-premises when online users communicate with on-premises users\u201d<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain_media.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1126\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain_media-300x47.png\" alt=\"SplitDomain_media\" width=\"500\" height=\"79\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_media-300x47.png 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_media-200x31.png 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_media-580x91.png 580w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_media.png 802w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The concept is clarified in the slides of the TechEd<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Signaling traffic for the users will keep going on the pool where they are homed (online or on-premises) while the flow of media traffic (for example for a meeting) will depend on who is organizing the conference.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1125\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media.jpg\" alt=\"SplitDomain_10_media\" width=\"500\" height=\"277\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media.jpg 997w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media-300x166.jpg 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media-200x110.jpg 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain_10_media-580x321.jpg 580w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/span><\/p>\n<hr \/>\n<h4><span style=\"font-family: Georgia, Palatino;\">Interoperability between Lync online with split domain and Exchange \/ SharePoint<\/span><\/h4>\n<p><span style=\"font-family: Georgia, Palatino;\">The presentation examines various scenarios:<\/span><\/p>\n<ul>\n<li><span style=\"font-family: Georgia, Palatino;\">Lync online + Exchange online<\/span><\/li>\n<li><span style=\"font-family: Georgia, Palatino;\">Lync online + Exchange On-Premises<\/span><\/li>\n<li><span style=\"font-family: Georgia, Palatino;\">Lync online + SharePoint on-premises<\/span><\/li>\n<li><span style=\"font-family: Georgia, Palatino;\">Lync online + SharePoint online<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1127\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability-300x135.png\" alt=\"SplitDomain02_interoperability\" width=\"500\" height=\"226\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability-300x135.png 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability-200x90.png 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability-580x262.png 580w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain02_interoperability.png 833w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The good news is that SharePoint online integrates with Lync online as SharePoint on-premises does.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">IMHO SharePoint online is really a great solution and it is a worthy thing to have it operational in this scenario.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">On the other hand, the mix with Exchange on-premises is like a sitting duck, dropping a lot of features that Exchange 2013 brings to Lync 2013 (losing archiving in the mailbox and voice mail is really not good).<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">This matches with the aforementioned suggestion to keep all the features in the same side of the Cloud.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The hybrid Scenarios with Exchange online and Lync users both on-premises and online is something that you will see frequently in the future, and that is where the split domain really makes sense.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">I will move users to the on-premises environment if they need features not available online.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">You can see a schema of the \u201cmissing\u201d features for online users in the next figure:<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain03_features.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1128\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain03_features-300x172.png\" alt=\"SplitDomain03_features\" width=\"500\" height=\"287\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain03_features-300x172.png 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain03_features-200x114.png 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain03_features-580x333.png 580w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain03_features.png 870w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">It is evident that all the users requiring Enterprise Voice will stay on-premises.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">The split domain scenario, in the Microsoft vision, seems to be like a preparatory step for the final situation that will see all the unified communication users and workload move to the Cloud (if the roadmap will not be modified, we are talking about a window that should last around 15 months).<\/span><\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<h4><span style=\"font-family: Georgia, Palatino;\">Requirements for Hybrid Deployment with Split Domain<\/span><\/h4>\n<p><span style=\"font-family: Georgia, Palatino;\">The split domain configuration requires that the Office 365 multi-tenant has made available the last version of Lync 2013 online.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">You will need at least one Lync 2013 server on-premises.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Lync 2o13 can coexist with Lync 2010 or OCS 2007 R2 (but not with both at the same time), although it is a logical step to migrate everything on Lync 2013 as soon as possible.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">AD FS and Directory Sync are required to keep users information aligned between on-premises and online.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\">Your public SIP domain name in Office 365 is called vanity domain and will be enabled and validated with a short procedure.<\/span><\/p>\n<p><span style=\"font-family: Georgia, Palatino;\"><a href=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1130 size-large\" src=\"https:\/\/modern-workplace.uk\/\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain-1024x358.png\" alt=\"SplitDomain04_vanity_domain\" width=\"580\" height=\"202\" srcset=\"https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain-1024x358.png 1024w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain-300x105.png 300w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain-200x70.png 200w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain-580x203.png 580w, https:\/\/modern-workplace.uk\/wp-content\/uploads\/2014\/05\/SplitDomain04_vanity_domain.png 1054w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lync Online Hybrid Deployment with Split Domain<br \/>\nThis scenario requires and on-premises deployment of Lync and an agreement with an Office 365 \/ Lync 2013 online multi-tenant.<br \/>\nThis solution allows enabling our Lync users to Lync online or to Lync on-premises, leaving to the Lync administrator the capability to migrate them from one situation to the other one and vice-versa smoothly.<\/p>\n","protected":false},"author":1,"featured_media":1215,"comment_status":"open","ping_status":"open","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":[18,19],"tags":[73,74,75,76,32,33,35,36,64,26,44,77,78,79,80,81,82,83],"class_list":["post-339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-english","category-lync","tag-cloud","tag-enterprisevoice","tag-hybrid","tag-hybrid-deployment","tag-lync-2013-client","tag-lync-2013-server","tag-lync-client","tag-lync-microsoft","tag-lync-online","tag-lync-server","tag-microsoft-lync-2013","tag-office-365","tag-on-premises","tag-online","tag-sip-domain","tag-split-domain","tag-vanity-domain","tag-voice"],"_links":{"self":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/339","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=339"}],"version-history":[{"count":1,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/339\/revisions"}],"predecessor-version":[{"id":1208,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/posts\/339\/revisions\/1208"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=\/wp\/v2\/media\/1215"}],"wp:attachment":[{"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modern-workplace.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}