diff --git a/homeassistant/components/yolink/services.py b/homeassistant/components/yolink/services.py
index a011d493dc9..8d622de70e7 100644
--- a/homeassistant/components/yolink/services.py
+++ b/homeassistant/components/yolink/services.py
@@ -19,6 +19,11 @@ from .const import (
 
 SERVICE_PLAY_ON_SPEAKER_HUB = "play_on_speaker_hub"
 
+_SPEAKER_HUB_PLAY_CALL_OPTIONAL_ATTRS = (
+    (ATTR_VOLUME, lambda x: x),
+    (ATTR_TONE, lambda x: x.capitalize()),
+)
+
 
 def async_register_services(hass: HomeAssistant) -> None:
     """Register services for YoLink integration."""
@@ -46,16 +51,16 @@ def async_register_services(hass: HomeAssistant) -> None:
                         identifier[1]
                     )
                 ) is not None:
-                    tone_param = service_data[ATTR_TONE].capitalize()
-                    play_request = ClientRequest(
-                        "playAudio",
-                        {
-                            ATTR_TONE: tone_param,
-                            ATTR_TEXT_MESSAGE: service_data[ATTR_TEXT_MESSAGE],
-                            ATTR_VOLUME: service_data[ATTR_VOLUME],
-                            ATTR_REPEAT: service_data[ATTR_REPEAT],
-                        },
-                    )
+                    params = {
+                        ATTR_TEXT_MESSAGE: service_data[ATTR_TEXT_MESSAGE],
+                        ATTR_REPEAT: service_data[ATTR_REPEAT],
+                    }
+
+                    for attr, transform in _SPEAKER_HUB_PLAY_CALL_OPTIONAL_ATTRS:
+                        if attr in service_data:
+                            params[attr] = transform(service_data[attr])
+
+                    play_request = ClientRequest("playAudio", params)
                     await device_coordinator.device.call_device(play_request)
 
     hass.services.async_register(
@@ -64,9 +69,9 @@ def async_register_services(hass: HomeAssistant) -> None:
         schema=vol.Schema(
             {
                 vol.Required(ATTR_TARGET_DEVICE): cv.string,
-                vol.Required(ATTR_TONE): cv.string,
+                vol.Optional(ATTR_TONE): cv.string,
                 vol.Required(ATTR_TEXT_MESSAGE): cv.string,
-                vol.Required(ATTR_VOLUME): vol.All(
+                vol.Optional(ATTR_VOLUME): vol.All(
                     vol.Coerce(int), vol.Range(min=0, max=15)
                 ),
                 vol.Optional(ATTR_REPEAT, default=0): vol.All(
diff --git a/homeassistant/components/yolink/services.yaml b/homeassistant/components/yolink/services.yaml
index 5f7a3ec3122..7375962070e 100644
--- a/homeassistant/components/yolink/services.yaml
+++ b/homeassistant/components/yolink/services.yaml
@@ -14,7 +14,6 @@ play_on_speaker_hub:
       selector:
         text:
     tone:
-      required: true
       default: "tip"
       selector:
         select:
@@ -25,7 +24,6 @@ play_on_speaker_hub:
             - "tip"
           translation_key: speaker_tone
     volume:
-      required: true
       default: 8
       selector:
         number:
@@ -33,7 +31,6 @@ play_on_speaker_hub:
           max: 15
           step: 1
     repeat:
-      required: true
       default: 0
       selector:
         number:
diff --git a/homeassistant/components/yolink/strings.json b/homeassistant/components/yolink/strings.json
index 2f9a9454502..cbb092405d7 100644
--- a/homeassistant/components/yolink/strings.json
+++ b/homeassistant/components/yolink/strings.json
@@ -115,7 +115,7 @@
         },
         "volume": {
           "name": "Volume",
-          "description": "Speaker volume during playback."
+          "description": "Override the speaker volume during playback of this message only."
         },
         "repeat": {
           "name": "Repeat",