diff --git a/homeassistant/components/voip/config_flow.py b/homeassistant/components/voip/config_flow.py
index 3c370735a764f7..6c831aaa1bb785 100644
--- a/homeassistant/components/voip/config_flow.py
+++ b/homeassistant/components/voip/config_flow.py
@@ -16,7 +16,7 @@
 from homeassistant.core import callback
 from homeassistant.helpers import config_validation as cv
 
-from .const import CONF_SIP_PORT, CONF_SIP_USER, DEFAULT_SIP_USER, DOMAIN
+from .const import CONF_SIP_PORT, CONF_SIP_USER, DOMAIN
 
 
 class VoIPConfigFlow(ConfigFlow, domain=DOMAIN):
@@ -58,9 +58,6 @@ async def async_step_init(
     ) -> ConfigFlowResult:
         """Manage the options."""
         if user_input is not None:
-            if "enable_advanced" in user_input:
-                return await self.async_step_advanced()
-
             return self.async_create_entry(title="", data=user_input)
 
         return self.async_show_form(
@@ -74,34 +71,12 @@ async def async_step_init(
                             SIP_PORT,
                         ),
                     ): cv.port,
-                    vol.Optional("enable_advanced"): bool,
-                }
-            ),
-            description_placeholders={
-                "note": "Enable advanced options by checking the box.",
-            },
-        )
-
-    async def async_step_advanced(
-        self, user_input: dict[str, Any] | None = None
-    ) -> ConfigFlowResult:
-        """Manage the advanced options."""
-        if user_input is not None:
-            return self.async_create_entry(
-                title="", data={**self.config_entry.options, **user_input}
-            )
-
-        return self.async_show_form(
-            step_id="advanced",
-            data_schema=vol.Schema(
-                {
                     vol.Optional(
                         CONF_SIP_USER,
                         default=self.config_entry.options.get(
                             CONF_SIP_USER,
-                            DEFAULT_SIP_USER,
                         ),
-                    ): str,
+                    ): vol.Any(None, cv.string),
                 }
             ),
         )
diff --git a/homeassistant/components/voip/const.py b/homeassistant/components/voip/const.py
index 0dbee798a4599b..9a4403f9df2c58 100644
--- a/homeassistant/components/voip/const.py
+++ b/homeassistant/components/voip/const.py
@@ -12,7 +12,5 @@
     "sleep_ratio": 0.99,
 }
 
-DEFAULT_SIP_USER = "HA"
-
 CONF_SIP_PORT = "sip_port"
 CONF_SIP_USER = "sip_user"
diff --git a/homeassistant/components/voip/strings.json b/homeassistant/components/voip/strings.json
index c25c22f3f80363..96c902bf39a159 100644
--- a/homeassistant/components/voip/strings.json
+++ b/homeassistant/components/voip/strings.json
@@ -53,7 +53,8 @@
     "step": {
       "init": {
         "data": {
-          "sip_port": "SIP port"
+          "sip_port": "SIP port",
+          "sip_user": "SIP user"
         }
       }
     }
diff --git a/tests/components/voip/test_config_flow.py b/tests/components/voip/test_config_flow.py
index f6cfccb7dbd028..b343a9bbfc5bd9 100644
--- a/tests/components/voip/test_config_flow.py
+++ b/tests/components/voip/test_config_flow.py
@@ -68,7 +68,7 @@ async def test_options_flow(hass: HomeAssistant) -> None:
         user_input={},
     )
     assert result["type"] is FlowResultType.CREATE_ENTRY
-    assert config_entry.options == {"sip_port": 5060}
+    assert config_entry.options == {"sip_port": 5060, "sip_user": None}
 
     # Manual
     result = await hass.config_entries.options.async_init(
@@ -79,36 +79,15 @@ async def test_options_flow(hass: HomeAssistant) -> None:
         user_input={"sip_port": 5061},
     )
     assert result["type"] is FlowResultType.CREATE_ENTRY
-    assert config_entry.options == {"sip_port": 5061}
+    assert config_entry.options == {"sip_port": 5061, "sip_user": None}
 
-    # Manual with advanced options default user
+    # Manual with user
     result = await hass.config_entries.options.async_init(
         config_entry.entry_id,
     )
     result = await hass.config_entries.options.async_configure(
         result["flow_id"],
-        user_input={"sip_port": 5061, "enable_advanced": True},
-    )
-    assert result["type"] is FlowResultType.FORM
-    result = await hass.config_entries.options.async_configure(
-        result["flow_id"],
-        user_input={},
+        user_input={"sip_port": 5061, "sip_user": "HA"},
     )
     assert result["type"] is FlowResultType.CREATE_ENTRY
     assert config_entry.options == {"sip_port": 5061, "sip_user": "HA"}
-
-    # Manual with advanced options
-    result = await hass.config_entries.options.async_init(
-        config_entry.entry_id,
-    )
-    result = await hass.config_entries.options.async_configure(
-        result["flow_id"],
-        user_input={"sip_port": 5061, "enable_advanced": True},
-    )
-    assert result["type"] is FlowResultType.FORM
-    result = await hass.config_entries.options.async_configure(
-        result["flow_id"],
-        user_input={"sip_user": "test"},
-    )
-    assert result["type"] is FlowResultType.CREATE_ENTRY
-    assert config_entry.options == {"sip_port": 5061, "sip_user": "test"}