{"id":2718,"date":"2022-10-16T21:32:00","date_gmt":"2022-10-17T02:32:00","guid":{"rendered":"https:\/\/johndeletre.blog\/2022\/10\/teams-sip-gateway\/"},"modified":"2025-12-17T21:34:28","modified_gmt":"2025-12-18T02:34:28","slug":"teams-sip-gateway","status":"publish","type":"post","link":"https:\/\/johndeletre.blog\/en\/2022\/10\/teams-sip-gateway\/","title":{"rendered":"Teams SIP Gateway"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2718\" class=\"elementor elementor-2718 elementor-2605\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7008c4e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7008c4e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2df26cb\" data-id=\"2df26cb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44d2b32 elementor-widget elementor-widget-text-editor\" data-id=\"44d2b32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>What is the Microsoft Teams SIP Gateway?<\/p><p>SIP Gateway is a feature that allows you to use any SIP device, see the phone compatibility list <a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoftteams\/sip-gateway-plan#compatible-devices\">here<\/a>, with Microsoft Teams. The SIP Gateway will allow you to keep your SIP phones that came with your old Cisco or 3CX phone system. You will be able to log into Teams with your corporate credentials and make and receive calls with a compatible SIP device.<\/p><p>What are the benefits and features of the SIP Gateway?<\/p><ul style=\"margin-top: 0cm;\" type=\"disc\"><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Making and receiving calls  <\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Simultaneous calls<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Do not disturb<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Holding and silencing<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Voicemail<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Message waiting indicator<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Connecting and disconnecting<\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Join a Teams meeting  <\/b><\/li><li style=\"margin-bottom: 0cm; mso-list: l2 level1 lfo1; tab-stops: list 36.0pt;\"><b>Call forwarding<\/b><\/li><\/ul><p>As you can see, the features are quite limited. In addition, it is currently not possible to push particular configurations to this type of phone via an FTP server, since Microsoft becomes your provisioning server. The only option for you to push configurations to your phones will be to use either <a href=\"https:\/\/www.audiocodes.com\/solutions-products\/products\/management-products-solutions\/one-voice-operations-center\">AudioCodes OVOC<\/a> or <a href=\"https:\/\/www.poly.com\/us\/en\/products\/services\/cloud\/poly-lens\">Poly Lens<\/a>.<\/p><p>The icing on the cake, with the basic configuration, you will not be able to call internal extensions! Don&#8217;t worry, I have a solution for you about this if you use Poly phones, like the VVX range.  <\/p><p><b>Prerequisites to be able to connect via the SIP gateway<\/b><\/p><ol><li>The user must have an activated phone number<\/li><li>User must have a License that includes Teams<\/li><li>The user must have an Enterprise Voice License (Call Plan or Direct Routing)<\/li><\/ol><p>Please note that the SIP Gateway is not yet available for government environments (GCC, GCC High and DoD)<\/p><p>For more information, see &#8211;&#8221; <a href=\"https:\/\/learn.microsoft.com\/fr-ca\/microsoftteams\/sip-gateway-plan\">\n  <b>HERE<\/b>\n<\/a><\/p><p>Now that you know what the SIP gateway is, let&#8217;s see how to configure it with the different steps below:<\/p><ol><li><b>Configure your Microsoft 365 tenant<\/b><br>In your Teams administrative portal, access the <b>Voice<\/b> menu <b> &gt; Calling Policies<\/b>, open the <b>Global <\/b>rule or those used by your employees.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/capture-1.png\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/capture-1-1024x415.png\" alt=\"\" width=\"720\" height=\"292\"><\/a><p>Then, in the penultimate option, check <span style=\"font-weight: bold;\">&#8220;SIP devices can be used for calls&#8221;.<br><\/span><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/capture-2-e1665969498723.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/capture-2-e1665969498723.png\" alt=\"\" width=\"720\" height=\"81\"><\/a><br>Please note that it can take up to 24 hours to activate the SIP gateway function on your Microsoft 365 tenant.<\/p><\/li><li><b>Configure your corporate firewall <\/b><br>To enable users to connect with a SIP phone inside your company&#8217;s LAN, you need to set up certain permissions on your firewall. For a better understanding I have made a small Visio diagram below:<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Capture-decran-2022-10-16-113108.png\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Capture-decran-2022-10-16-113108.png\" alt=\"\" width=\"720\" height=\"369\"><\/a><br>I also recommend that you allow Teams traffic to <a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoft-365\/enterprise\/urls-and-ip-address-ranges\">Microsoft 365 URLs and IP addresses<\/a>.<br><br><\/li><li><b>Configure your DHCP server options<\/b><br>Now that your firewall and Microsoft 365 tenant are up and running, you need to program your phones to connect to the SIP gateway service provisioning server. To do this you have 2 choices <span style=\"text-indent: -24px;\">\n  <u>\n    <b>manually<\/b>\n  <\/u>\n<\/span><span style=\"text-indent: -24px;\"><b> <\/b>on each phone or use the <\/span><span style=\"text-indent: -24px;\">\n  <u>\n    <b>DHCP options<\/b>\n  <\/u>\n<\/span><span style=\"text-indent: -24px;\"><span style=\"text-indent: -24px;\">  of your VoIP subnet. Attention! If you are migrating your phone system to Microsoft Teams, set up a second subnet\/VLAN so that the DHCP options do not conflict with your current system. Note that if your employee buys a SIP phone for home, your IT team will still have to enter the provisioning address manually on their phone. Here are the provisioning addresses for the Microsoft Teams SIP Gateway Service:<br><\/span><\/span><b>Europe:<\/b><a href=\"http:\/\/emea.ipp.sdg.teams.microsoft.com\/\">http:\/\/emea.ipp.sdg.teams.microsoft.com<\/a><br><b>America:<\/b><a href=\"http:\/\/noam.ipp.sdg.teams.microsoft.com\/\">http:\/\/noam.ipp.sdg.teams.microsoft.com<\/a><br><b>Asia:<\/b> <a href=\"http:\/\/apac.ipp.sdg.teams.microsoft.com\/\">http:\/\/apac.ipp.sdg.teams.microsoft.com<\/a><br><div style=\"text-indent: 0px;\"><p>In addition to the usual options such as router <b>[#003]<\/b>, time server <b>[#004]<\/b>, DNS servers <b>[#006]<\/b> and domain names <b>[#015]<\/b>, here are the other options to configure on your DHCP server for the Microsoft Teams SIP gateway:<br>Option <b>[#002]<\/b>, to specify your time zone. This value must be entered in hexadecimal. To help you, here is a correspondence of the time zones and their values in hexadecimal.<\/p><table border=\"1\" cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td valign=\"top\" width=\"116\"><p align=\"center\"><b>GMT offset (hour)<\/b><\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\"><b>GMT offset (second)<\/b><\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\"><b>Hexadecimal<\/b><\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">0<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">0<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00000000<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+1<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">3600<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00000E10<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+2<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">7200<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00001C20<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+3<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">10800<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00002A30<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+4<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">14400<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00003840<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+5<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">18000<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00004650<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+6<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">21600<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00005460<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+7<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">25200<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00006270<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+8<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">28800<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00007080<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+9<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">32400<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00007E90<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+10<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">36000<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00008CA0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+11<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">39600<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x00009AB0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">+12<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">43200<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0x0000A8CD<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-1<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFF1F0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-2<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFE3E0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-3<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFD5D0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-4<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFC7CD<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-5<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFB9B0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-6<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFFABA0<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-7<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFF9D90<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-8<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFF8F80<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-9<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFF8170<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-10<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFF7360<\/p><\/td><\/tr><tr><td valign=\"top\" width=\"116\"><p align=\"center\">-11<\/p><\/td><td valign=\"top\" width=\"130\"><p align=\"center\">N\/A<\/p><\/td><td valign=\"top\" width=\"87\"><p align=\"center\">0xFFFF6550<\/p><\/td><\/tr><\/tbody><\/table><p>The option <b>[#042]<\/b>, to specify your NTP time server<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option-42v2.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option-42v2.png\" alt=\"\" width=\"720\" height=\"327\"><\/a><\/p><p>The <b>[#160]<\/b> option, to specify the address of the Microsoft provisioning server.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option160.PNG.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option160.PNG.png\" alt=\"\" width=\"720\" height=\"212\"><\/a><\/p><p>The option <b>[#066]<\/b>, to specify the address of the Microsoft<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option66.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/Option66.png\" alt=\"\" width=\"720\" height=\"226\"><\/a><\/p><p>If your DHCP options are configured properly, once your phone is plugged into your VoIP subnet\/VLAN, it should reboot several times (at least 2x) in order to install the latest firmware &#8220;compatible&#8221; with the Microsoft Teams SIP Gateway. To be sure, Microsoft in their default options will deploy the Microsoft Teams logo. You can see an example below of a Poly VVX 500.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVXScreen.bmp\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVXScreen.bmp\" alt=\"\" width=\"720\" height=\"540\"><\/a><\/p><p>If you ever migrate from an old phone system, I also advise you before connecting your phones to your Teams subnet\/VLAN to reset it to factory settings.<\/p><\/div><\/li><li><b>Configure conditional access in Azure (optional)<\/b><br>Conditional access is an Azure Active Directory (Azure AD) feature that ensures that devices accessing your Microsoft 365 resources are properly managed and secured. If your company ever uses conditional access to restrict device access to specific locations, you will probably need to exclude the following IP addresses that Microsoft uses to authenticate users on SIP phones.<br><b>North America: <\/b>52.170.38.140 and 40.112.144.212<br><br><\/li><li><b>Provisioning one or more SIP phones<\/b><br>Finally, once your network is configured, your DHCP options are working and your phones have the latest firmware <i>&#8220;compatible&#8221;<\/i> with the Microsoft Teams SIP Gateway, you&#8217;ll need to register your phones with the Microsoft Teams administrative portal. To do this, go to: https: <a href=\"https:\/\/admin.teams.microsoft.com\/devices\/ipphones\">\/\/admin.teams.microsoft.com\/devices\/ipphones<\/a> to enter the MAC address of your phone manually or import a CSV file containing a batch of SIP phones to register in your Microsoft 365 portal.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-1.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-1.png\" alt=\"\" width=\"720\" height=\"188\"><\/a><p>Click on <span style=\"font-weight: bold; text-indent: -24px;\">Provision devices<\/span><span style=\"text-indent: -24px;\">, then <\/span><span style=\"font-weight: bold; text-indent: -24px;\">Add MAC address manually<\/span><span style=\"text-indent: -24px;\"> and enter the MAC address of one of your SIP phones ready to connect, as shown below:<br><\/span><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-3.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-3.png\" alt=\"\" width=\"720\" height=\"351\"><\/a><\/p><p>Once your SIP phone is registered with the Teams administrative portal, you will need to generate a verification code for your phone registration. Enter the enrollment code <span style=\"font-weight: bold;\">*55*<\/span> <i>(used by the SIP Gateway for validation of the unique enrollment verification code)<\/i>, followed by the verification code generated in Teams Admin Center for this device. For example, if the verification code is <span style=\"font-weight: bold;\">254153<\/span>, dial <span style=\"font-weight: bold;\">*55*254153<\/span> to register the device.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-4.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-4.png\" alt=\"\" width=\"720\" height=\"452\"><\/a><br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVXScreen2.bmp\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVXScreen2.bmp\" alt=\"\" width=\"720\" height=\"540\"><\/a><\/p><p>Finally, once the SIP phone is registered, you will be able to authenticate on the phone or remotely using a pairing code. To get the code you can do it directly on the phone or on the administrative portal of Teams in the tab &#8221; <span style=\"font-weight: bold;\">waiting for signin&#8221;<\/span>.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-6.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-6.png\" alt=\"\" width=\"720\" height=\"761\"><\/a><\/p><p>To pair your phone with your user in Microsoft 365, go to the portal <strong>\n  <a href=\"https:\/\/microsoft.com\/devicelogin\">https:\/\/microsoft.com\/devicelogin<\/a>\n<\/strong>Enter your pairing code and the Microsoft portal will ask you for your authentication information in order to connect to the SIP phone.<br><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-7.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/TAC-7.png\" alt=\"\" width=\"720\" height=\"558\"><\/a><\/p><\/li><\/ol><div>Finally, I told you earlier that it was not possible by default to make calls to internal extensions with the basic configurations that Microsoft SIP Gateway sends to your phones. To change this, with Poly VVX phones, log into your phone&#8217;s web interface and edit the local digitmap. The default Digitmap of a Polycom phone after provisioning by Microsoft is: <b>+xxxxxxxxxxxx|0T|011xxx.T|[0-1][2-9]xxxxxxxxx|[2-9]xxxxxxxxx|[2-9]xxxT|911<\/b><\/div><p>Change the end of the DigitMap by changing the <b>2<\/b> to a <b>0<\/b>. You can do this in the <b>Settings <\/b>menu <b> &gt; SIP &gt; Local Settings. <\/b>This will allow you to dial 4-digit extensions. The calls will be routed to your SBC, in direct routing mode, you will then just have to route back the 4 digits extensions to the desired translation to MS Teams.<\/p><p><b>  +xxxxxxxxxxxx|011xxx.T|[0-1][2-9]xxxxxxxxx|[2-9]xxxxxxxxx|<span style=\"color: red;\">[0-9<\/span>]xxxT|911  <br><\/b><b><!-- [if gte vml 1]><v:shape id=\"Image_x0020_16\" o:spid=\"_x0000_i1025\" type=\"#_x0000_t75\" alt=\"Une image contenant texte, capture d\u2019\u00e9cran, int\u00e9rieur&#10;&#10;Description g\u00e9n\u00e9r\u00e9e automatiquement\" style='width:432.5pt;height:301.5pt;visibility:visible;mso-wrap-style:square'><br \/> <v:imagedata src=\"file:\/\/\/C:\/Users\/delet\/AppData\/Local\/Temp\/msohtmlclip1\/01\/clip_image027.png\" o:title=\"Une image contenant texte, capture d\u2019\u00e9cran, int\u00e9rieur&#10;&#10;Description g\u00e9n\u00e9r\u00e9e automatiquement\"\/><br \/><![endif]--><\/b><\/p><p><a href=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVX-DigitMap.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"border-image alignnone\" src=\"https:\/\/johndeletre.blog\/wp-content\/uploads\/2022\/10\/VVX-DigitMap.png\" alt=\"\" width=\"720\" height=\"503\"><\/a><\/p><p><b style=\"text-decoration-line: underline;\">Some interesting links:<\/b><\/p><ul><li><a href=\"https:\/\/techcommunity.microsoft.com\/t5\/microsoft-teams-blog\/enable-core-microsoft-teams-calling-functionality-on-compatible\/ba-p\/3030196\">Enable core Microsoft Teams calling functionality on compatible legacy SIP phones with SIP Gateway &#8211; Microsoft Community Hub<\/a><\/li><li><a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoftteams\/sip-gateway-plan\">SIP Gateway Plan &#8211; Microsoft Teams<\/a><\/li><li><a href=\"https:\/\/learn.microsoft.com\/en-us\/microsoftteams\/sip-gateway-configure\">Configure SIP Gateway &#8211; Microsoft Teams<\/a><\/li><li><a href=\"https:\/\/support.poly.com\/support\/s\/article\/Using-compatible-Poly-IP-phones-to-sign-into-Microsoft-Teams-SIP-Gateway\">Using compatible Poly IP phones to sign into Microsoft Teams SIP Gateway<\/a><\/li><li><a href=\"https:\/\/audiocodes.sharefile.com\/share\/view\/sc9cdf17f9ec45d09\/fo7914a2-4f3a-4000-8957-47bd6f35a3a5\" target=\"_blank\" rel=\"noopener\">AudioCodes SIP Gateway firmware<\/a><\/li><\/ul><div><span data-slate-object=\"text\" data-key=\"255\">That&#8217;s it!<\/span> <span data-slate-object=\"text\" data-key=\"12\">If you have any questions or if you can&#8217;t get your  <\/span><span data-slate-object=\"text\" data-key=\"13\">phones<\/span> <span data-slate-object=\"text\" data-key=\"15\">SIP<\/span><span data-slate-object=\"text\" data-key=\"16\">  with Microsoft  <\/span><span data-slate-object=\"text\" data-key=\"17\">Teams<\/span><span data-slate-object=\"text\" data-key=\"18\">  and the bridge  <\/span><span data-slate-object=\"text\" data-key=\"19\">SIP<\/span><span data-slate-object=\"text\" data-key=\"20\">Leave me a comment or call me!<\/span> <span data-slate-object=\"text\" data-key=\"242\">Also,<\/span><span data-slate-object=\"text\" data-key=\"243\">  if you find an error in my  <\/span><span data-slate-object=\"text\" data-key=\"244\">procedure,<\/span> <span data-slate-object=\"text\" data-key=\"246\">go to<\/span><span data-slate-object=\"text\" data-key=\"247\">-me know  <\/span><span data-slate-object=\"text\" data-key=\"248\">that it<\/span><span data-slate-object=\"text\" data-key=\"249\" data-slate-fragment=\"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 will be happy to correct it.<\/span><\/div><p><b>John D.<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is the Microsoft Teams SIP Gateway? SIP Gateway is a feature that allows you to use any SIP device,&hellip;<\/p>\n","protected":false},"author":1,"featured_media":2611,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[46],"tags":[101,100],"class_list":["post-2718","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-microsoft-teams-en","tag-office-phone","tag-sip-gateway"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Teams SIP Gateway &#062; JD. 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