Update Modem Caller ID docs for config flow (#16631)

Co-authored-by: J. Nick Koston <nick@koston.org>
Co-authored-by: Franck Nijhof <git@frenck.dev>

source/_integrations/modem_callerid.markdown

@@ -6,15 +6,57 @@ ha_category:
 ha_release: '0.40'
 ha_iot_class: Local Polling
 ha_domain: modem_callerid
-ha_platforms:
-  - sensor
 ---
 
-The `modem_callerid` integration uses an available modem for collecting caller ID information. It requires a Hayes AT compatible modem that supports caller ID detection (via AT+VCID=1).
+The `modem_callerid` integration uses an available modem for collecting caller ID information. It requires a Hayes AT compatible modem that supports caller ID detection (via AT+VCID=1). Usually any modem that uses a CX93001 will support this.
 
 When the sensor detects a new call, its state changes to 'ring' for each ring and 'callerid' when caller id information is received. It returns to 'idle' once ringing stops. The state event includes an attribute payload that includes the time of the call, name and number.
 
-## Setup
+This integration also offers two services. `modem_callerid.reject_call` to pick up and then hang up the call to properly reject a call (via ATA anf ATH). `modem_callerid.hangup_call` to hang up an existing call (via ATH).
+
+{% include integrations/config_flow.md %}
+
+## Examples
+
+Some example automations:
+
+{% raw %}
+
+```yaml
+automation:
+  - alias: Notify CallerID
+    trigger:
+      platform: state
+      entity_id: sensor.phone_modem
+      to: "callerid"
+    action:
+      service: notify.notify
+      data:
+        message: "Call from {{ state_attr('sensor.phone_modem', 'cid_name') }} at {{ state_attr('sensor.phone_modem', 'cid_number') }} "
+  - alias: Notify CallerID webui
+    trigger:
+      platform: state
+      entity_id: sensor.phone_modem
+      to: "callerid"
+    action:
+      service: persistent_notification.create
+      data:
+        title: "Call from"
+        message: "{{ state_attr('sensor.phone_modem', 'cid_time').strftime("%I:%M %p") }} {{ state_attr('sensor.phone_modem', 'cid_name') }}  {{ state_attr('sensor.phone_modem', 'cid_number') }} "
+  - alias: Say CallerID
+    trigger:
+      platform: state
+      entity_id: sensor.phone_modem
+      to: "callerid"
+    action:
+      service: tts.google_say
+      data:
+        message: "Call from {{ state_attr('sensor.phone_modem', 'cid_name') }}"
+```
+
+{% endraw %}
+
+## Extra instructions for the Home Assistant Core installation type
 
 To find the path of your USB modem, run:
 
@@ -29,76 +71,3 @@ sudo usermod -a -G dialout homeassistant
 ```
 
 Depending on what's plugged into your USB ports, the name found above may change. You can lock in a name, such as `/dev/modem`, by following [these instructions](http://hintshop.ludvig.co.nz/show/persistent-names-usb-serial-devices/).
-
-## Configuration
-
-To enable the sensor, add the following lines to your `configuration.yaml`:
-
-```yaml
-# Example configuration.yaml entry
-sensor:
-  - platform: modem_callerid
-```
-
-{% configuration %}
-name:
-  description: Name of the sensor to use in the frontend.
-  required: false
-  type: string
-  default: "`modem_callerid`"
-device:
-  description: The port to use.
-  required: false
-  type: string
-  default: "`/dev/ttyACM0`"
-{% endconfiguration %}
-
-To find the path of your USB modem, run:
-
-`$ ls /dev/ttyACM*`
-
-If Home Assistant (`hass`) runs with another user (e.g., `homeassistant`) give access to the stick with:
-
-`$ sudo usermod -a -G dialout homeassistant`
-
-Depending on what's plugged into your USB ports, the name found above may change. You can lock in a name, such as `/dev/modem`, by following [these instructions](http://hintshop.ludvig.co.nz/show/persistent-names-usb-serial-devices/).
-
-## Examples
-
-Some example automations:
-
-{% raw %}
-
-```yaml
-automation:
-  - alias: "Notify CallerID"
-    trigger:
-      platform: state
-      entity_id: sensor.modem_callerid
-      to: "callerid"
-    action:
-      service: notify.notify
-      data:
-        message: "Call from {{ state_attr('sensor.modem_callerid', 'cid_name') }} at {{ state_attr('sensor.modem_callerid', 'cid_number') }} "
-  - alias: "Notify CallerID webui"
-    trigger:
-      platform: state
-      entity_id: sensor.modem_callerid
-      to: "callerid"
-    action:
-      service: persistent_notification.create
-      data:
-        title: "Call from"
-        message: "{{ state_attr('sensor.modem_callerid', 'cid_time').strftime("%I:%M %p") }} {{ state_attr('sensor.modem_callerid', 'cid_name') }}  {{ state_attr('sensor.modem_callerid', 'cid_number') }} "
-  - alias: "Say CallerID"
-    trigger:
-      platform: state
-      entity_id: sensor.modem_callerid
-      to: "callerid"
-    action:
-      service: tts.google_say
-      data:
-        message: "Call from {{ state_attr('sensor.modem_callerid', 'cid_name') }}"
-```
-
-{% endraw %}