diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageDefinition.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageDefinition.cs
new file mode 100644
index 00000000..f6849791
--- /dev/null
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageDefinition.cs	
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+
+namespace PepperDash_Essentials_Core.DeviceTypeInterfaces
+{
+    public interface ILanguageDefinition
+    {
+        string LocaleName { get; set; }
+        string FriendlyName { get; set; }
+        bool Enable { get; set; }
+        List<LanguageLabel> UiLabels { get; set; }
+        List<LanguageLabel> Sources { get; set; }
+        List<LanguageLabel> Destinations { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageProvider.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageProvider.cs
new file mode 100644
index 00000000..2ae483f6
--- /dev/null
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/ILanguageProvider.cs	
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+
+namespace PepperDash_Essentials_Core.DeviceTypeInterfaces
+{
+        public interface ILanguageProvider
+    {
+        ILanguageDefinition CurrentLanguage { get; set; }
+
+        event EventHandler CurrentLanguageChanged;
+    }
+
+}
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/LanguageLabel.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/LanguageLabel.cs
new file mode 100644
index 00000000..345da2ed
--- /dev/null
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/DeviceTypeInterfaces/LanguageLabel.cs	
@@ -0,0 +1,12 @@
+using PepperDash.Core;
+
+namespace PepperDash_Essentials_Core.DeviceTypeInterfaces
+{
+    public class LanguageLabel
+    {
+        public string Key { get; set; }
+        public string Description { get; set; }
+        public string DisplayText { get; set; }
+        public uint JoinNumber { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj
index 9cc4365f..98e4e510 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
@@ -195,7 +195,10 @@
     <Compile Include="Devices\PC\Laptop.cs" />
     <Compile Include="Devices\ReconfigurableDevice.cs" />
     <Compile Include="Devices\VolumeDeviceChangeEventArgs.cs" />
+    <Compile Include="DeviceTypeInterfaces\LanguageLabel.cs" />
+    <Compile Include="DeviceTypeInterfaces\ILanguageProvider.cs" />
     <Compile Include="DeviceTypeInterfaces\IHasBranding.cs" />
+    <Compile Include="DeviceTypeInterfaces\ILanguageDefinition.cs" />
     <Compile Include="DeviceTypeInterfaces\IHasFarEndContentStatus.cs" />
     <Compile Include="DeviceTypeInterfaces\IHasPhoneDialing.cs" />
     <Compile Include="DeviceTypeInterfaces\IMobileControl.cs" />