diff --git a/.strict-typing b/.strict-typing
index 5c65e947b91..8fc41dea4ed 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -81,6 +81,8 @@ homeassistant.components.aranet.*
 homeassistant.components.aruba.*
 homeassistant.components.aseko_pool_live.*
 homeassistant.components.assist_pipeline.*
+homeassistant.components.asterisk_cdr.*
+homeassistant.components.asterisk_mbox.*
 homeassistant.components.asuswrt.*
 homeassistant.components.auth.*
 homeassistant.components.automation.*
diff --git a/homeassistant/components/asterisk_cdr/mailbox.py b/homeassistant/components/asterisk_cdr/mailbox.py
index a6c246831af..971b893ef6b 100644
--- a/homeassistant/components/asterisk_cdr/mailbox.py
+++ b/homeassistant/components/asterisk_cdr/mailbox.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 
 import datetime
 import hashlib
+from typing import Any
 
 from homeassistant.components.asterisk_mbox import (
     DOMAIN as ASTERISK_DOMAIN,
@@ -28,21 +29,21 @@ async def async_get_handler(
 class AsteriskCDR(Mailbox):
     """Asterisk VM Call Data Record mailbox."""
 
-    def __init__(self, hass, name):
+    def __init__(self, hass: HomeAssistant, name: str) -> None:
         """Initialize Asterisk CDR."""
         super().__init__(hass, name)
-        self.cdr = []
+        self.cdr: list[dict[str, Any]] = []
         async_dispatcher_connect(self.hass, SIGNAL_CDR_UPDATE, self._update_callback)
 
     @callback
-    def _update_callback(self, msg):
+    def _update_callback(self, msg: list[dict[str, Any]]) -> Any:
         """Update the message count in HA, if needed."""
         self._build_message()
         self.async_update()
 
-    def _build_message(self):
+    def _build_message(self) -> None:
         """Build message structure."""
-        cdr = []
+        cdr: list[dict[str, Any]] = []
         for entry in self.hass.data[ASTERISK_DOMAIN].cdr:
             timestamp = datetime.datetime.strptime(
                 entry["time"], "%Y-%m-%d %H:%M:%S"
@@ -61,7 +62,7 @@ class AsteriskCDR(Mailbox):
             cdr.append({"info": info, "sha": sha, "text": msg})
         self.cdr = cdr
 
-    async def async_get_messages(self):
+    async def async_get_messages(self) -> list[dict[str, Any]]:
         """Return a list of the current messages."""
         if not self.cdr:
             self._build_message()
diff --git a/homeassistant/components/asterisk_mbox/__init__.py b/homeassistant/components/asterisk_mbox/__init__.py
index 607daad5b54..e4c80a5848d 100644
--- a/homeassistant/components/asterisk_mbox/__init__.py
+++ b/homeassistant/components/asterisk_mbox/__init__.py
@@ -1,5 +1,6 @@
 """Support for Asterisk Voicemail interface."""
 import logging
+from typing import Any, cast
 
 from asterisk_mbox import Client as asteriskClient
 from asterisk_mbox.commands import (
@@ -42,11 +43,11 @@ CONFIG_SCHEMA = vol.Schema(
 
 def setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up for the Asterisk Voicemail box."""
-    conf = config[DOMAIN]
+    conf: dict[str, Any] = config[DOMAIN]
 
-    host = conf[CONF_HOST]
-    port = conf[CONF_PORT]
-    password = conf[CONF_PASSWORD]
+    host: str = conf[CONF_HOST]
+    port: int = conf[CONF_PORT]
+    password: str = conf[CONF_PASSWORD]
 
     hass.data[DOMAIN] = AsteriskData(hass, host, port, password, config)
 
@@ -56,13 +57,20 @@ def setup(hass: HomeAssistant, config: ConfigType) -> bool:
 class AsteriskData:
     """Store Asterisk mailbox data."""
 
-    def __init__(self, hass, host, port, password, config):
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        host: str,
+        port: int,
+        password: str,
+        config: dict[str, Any],
+    ) -> None:
         """Init the Asterisk data object."""
 
         self.hass = hass
         self.config = config
-        self.messages = None
-        self.cdr = None
+        self.messages: list[dict[str, Any]] | None = None
+        self.cdr: list[dict[str, Any]] | None = None
 
         dispatcher_connect(self.hass, SIGNAL_MESSAGE_REQUEST, self._request_messages)
         dispatcher_connect(self.hass, SIGNAL_CDR_REQUEST, self._request_cdr)
@@ -71,7 +79,7 @@ class AsteriskData:
         self.client = asteriskClient(host, port, password, self.handle_data)
 
     @callback
-    def _discover_platform(self, component):
+    def _discover_platform(self, component: str) -> None:
         _LOGGER.debug("Adding mailbox %s", component)
         self.hass.async_create_task(
             discovery.async_load_platform(
@@ -80,10 +88,13 @@ class AsteriskData:
         )
 
     @callback
-    def handle_data(self, command, msg):
+    def handle_data(
+        self, command: int, msg: list[dict[str, Any]] | dict[str, Any]
+    ) -> None:
         """Handle changes to the mailbox."""
 
         if command == CMD_MESSAGE_LIST:
+            msg = cast(list[dict[str, Any]], msg)
             _LOGGER.debug("AsteriskVM sent updated message list: Len %d", len(msg))
             old_messages = self.messages
             self.messages = sorted(
@@ -93,6 +104,7 @@ class AsteriskData:
                 async_dispatcher_send(self.hass, SIGNAL_DISCOVER_PLATFORM, DOMAIN)
             async_dispatcher_send(self.hass, SIGNAL_MESSAGE_UPDATE, self.messages)
         elif command == CMD_MESSAGE_CDR:
+            msg = cast(dict[str, Any], msg)
             _LOGGER.debug(
                 "AsteriskVM sent updated CDR list: Len %d", len(msg.get("entries", []))
             )
@@ -112,13 +124,13 @@ class AsteriskData:
             )
 
     @callback
-    def _request_messages(self):
+    def _request_messages(self) -> None:
         """Handle changes to the mailbox."""
         _LOGGER.debug("Requesting message list")
         self.client.messages()
 
     @callback
-    def _request_cdr(self):
+    def _request_cdr(self) -> None:
         """Handle changes to the CDR."""
         _LOGGER.debug("Requesting CDR list")
         self.client.get_cdr()
diff --git a/homeassistant/components/asterisk_mbox/mailbox.py b/homeassistant/components/asterisk_mbox/mailbox.py
index edf95cb3787..95b3b7e3b15 100644
--- a/homeassistant/components/asterisk_mbox/mailbox.py
+++ b/homeassistant/components/asterisk_mbox/mailbox.py
@@ -74,7 +74,7 @@ class AsteriskMailbox(Mailbox):
     async def async_get_messages(self) -> list[dict[str, Any]]:
         """Return a list of the current messages."""
         data: AsteriskData = self.hass.data[ASTERISK_DOMAIN]
-        return data.messages
+        return data.messages or []
 
     async def async_delete(self, msgid: str) -> bool:
         """Delete the specified messages."""
diff --git a/mypy.ini b/mypy.ini
index c0e87ebb14b..70949e36ef6 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -570,6 +570,26 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.asterisk_cdr.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
+[mypy-homeassistant.components.asterisk_mbox.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.asuswrt.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true