From dac5325ecff3faffe12a59a2cf9b559e49b1d3e6 Mon Sep 17 00:00:00 2001
From: Neil Dorin <ndorin@pepperdash.com>
Date: Thu, 23 Jul 2026 08:47:57 -0600
Subject: [PATCH] feat: add IDtmfDecode interface and DtmfReceivedEventArgs
 class for DTMF digit handling

---
 .../AudioCodec/Interfaces/IDtmfDecode.cs      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/PepperDash.Essentials.Devices.Common/AudioCodec/Interfaces/IDtmfDecode.cs

diff --git a/src/PepperDash.Essentials.Devices.Common/AudioCodec/Interfaces/IDtmfDecode.cs b/src/PepperDash.Essentials.Devices.Common/AudioCodec/Interfaces/IDtmfDecode.cs
new file mode 100644
index 00000000..68c06bfd
--- /dev/null
+++ b/src/PepperDash.Essentials.Devices.Common/AudioCodec/Interfaces/IDtmfDecode.cs
@@ -0,0 +1,19 @@
+namespace PepperDash.Essentials.Devices.Common.AudioCodec;
+
+public interface IDtmfDecode
+{
+    /// <summary>
+    /// Event fired when a DTMF digit is received
+    /// </summary>
+    event EventHandler<DtmfReceivedEventArgs> DtmfReceived;
+}
+
+public class DtmfReceivedEventArgs : EventArgs
+{
+    public string Digit { get; private set; }
+
+    public DtmfReceivedEventArgs(string digit)
+    {
+        Digit = digit;
+    }
+}
\ No newline at end of file