diff --git a/src/main/kotlin/com/vonage/client/kt/Voice.kt b/src/main/kotlin/com/vonage/client/kt/Voice.kt
index 4dcb970..eaa86b1 100644
--- a/src/main/kotlin/com/vonage/client/kt/Voice.kt
+++ b/src/main/kotlin/com/vonage/client/kt/Voice.kt
@@ -31,6 +31,8 @@ class Voice(private val voiceClient: VoiceClient) {
         fun transfer(nccoUrl: String) = voiceClient.transferCall(callId, nccoUrl)
 
         fun transfer(nccoUrl: URI) = transfer(nccoUrl.toString())
+
+        fun sendDtmf(digits: String): DtmfResponse = voiceClient.sendDtmf(callId, digits)
     }
 
     fun listCalls(filter: (CallsFilter.Builder.() -> Unit)? = null): CallInfoPage =
diff --git a/src/test/kotlin/com/vonage/client/kt/VoiceTest.kt b/src/test/kotlin/com/vonage/client/kt/VoiceTest.kt
index 8481332..c7dc60c 100644
--- a/src/test/kotlin/com/vonage/client/kt/VoiceTest.kt
+++ b/src/test/kotlin/com/vonage/client/kt/VoiceTest.kt
@@ -1,7 +1,6 @@
 package com.vonage.client.kt
 
 import com.vonage.client.common.HttpMethod
-import com.vonage.client.video.Websocket.AudioRate
 import com.vonage.client.voice.*
 import com.vonage.client.voice.ncco.Ncco
 import com.vonage.client.voice.ncco.TalkAction
@@ -25,6 +24,7 @@ class VoiceTest : AbstractTest() {
     private val count = 89
     private val pageSize = 25
     private val recordIndex = 14
+    private val dtmf = "p*123#"
     private val callResponseMap = mapOf(
         "_links" to mapOf(
             "self" to mapOf(
@@ -160,6 +160,19 @@ class VoiceTest : AbstractTest() {
         })
     }
 
+    @Test
+    fun `send dtmf`() {
+        val message = "DTMF sent"
+        mockPut(expectedUrl = "$callUrl/dtmf", status = 200,
+            expectedRequestParams = mapOf("digits" to dtmf),
+            expectedResponseParams = mapOf("message" to message, "uuid" to callIdStr)
+        )
+        val response = callObj.sendDtmf(dtmf)
+        assertNotNull(response)
+        assertEquals(message, response.message)
+        assertEquals(callIdStr, response.uuid)
+    }
+
     @Test
     fun `list calls all filter parameters`() {
         mockGet(callsBaseUrl, expectedQueryParams = mapOf(
@@ -213,7 +226,6 @@ class VoiceTest : AbstractTest() {
         val callStatus = CallStatus.RINGING
         val callDirection = CallDirection.OUTBOUND
         val wsContentType = "audio/l16;rate=8000"
-        val dtmf = "p*123#"
         val vbcExt = "4321"
         val userToUserHeader = "56a390f3d2b7310023a"