Update call-recording-csharp.md

Added C# BYOS

Author: vac0224

articles/communication-services/quickstarts/voice-video-calling/includes/call-recording-samples/call-recording-csharp.md

@@ -21,24 +21,23 @@ You can download the sample app from [GitHub](https://github.com/Azure-Samples/c
 Call Recording APIs use exclusively the `serverCallId`to initiate recording. There are a couple of methods you can use to fetch the `serverCallId` depending on your scenario:
 
 ### Call Automation scenarios
-- When using [Call Automation](../../../call-automation/callflows-for-customer-interactions.md), you have two options to get the `serverCallId`:
-    1) Once a call is created, a `serverCallId` is returned as a property of the `CallConnected` event after a call has been established. Learn how to [Get CallConnected event](../../../call-automation/callflows-for-customer-interactions.md?pivots=programming-language-csharp#update-programcs) from Call Automation SDK.
-    2) Once you answer the call or a call is created the `serverCallId` is returned as a property of the `AnswerCallResult` or `CreateCallResult` API responses respectively.
-
-### Calling SDK scenarios
-- When using [Calling Client SDK](../../get-started-with-video-calling.md), you can retrieve the `serverCallId` by using the `getServerCallId` method on the call. 
-Use this example to learn how to [Get serverCallId](../../get-server-call-id.md) from the Calling Client SDK. 
-
 
+When using [Call Automation](../../../call-automation/callflows-for-customer-interactions.md), you have two options to get the `serverCallId`:
+    1) Once a call is created, it returns a `serverCallId` as a property of the `CallConnected` event after a call is established. Learn how to [Get CallConnected event](../../../call-automation/callflows-for-customer-interactions.md?pivots=programming-language-csharp#update-programcs) from Call Automation SDK.
+    2) Once you answer the call or a call is created, it returns the `serverCallId` as a property of the `AnswerCallResult` or `CreateCallResult` API responses respectively.
 
-Let's get started with a few simple steps!
+### Calling SDK scenarios
 
+When using [Calling Client SDK](../../get-started-with-video-calling.md), you can retrieve the `serverCallId` by using the `getServerCallId` method on the call. 
+Use this example to learn how to [Get serverCallId](../../get-server-call-id.md) from the Calling Client SDK. 
 
+Let's get started with a few simple steps.
 
 ## 1. Create a Call Automation client
 
-Call Recording APIs are part of the Azure Communication Services [Call Automation](../../../../concepts/call-automation/call-automation.md) libraries. Thus, it's necessary to create a Call Automation client. 
-To create a call automation client, you use your Communication Services connection string and pass it to `CallAutomationClient` object.
+Call Recording APIs are part of the Azure Communication Services [Call Automation](../../../../concepts/call-automation/call-automation.md) libraries. So you need to create a Call Automation client.
+
+To create a call automation client, use your Communication Services connection string and pass it to `CallAutomationClient` object.
 
 ```csharp
 CallAutomationClient callAutomationClient = new CallAutomationClient("<ACSConnectionString>");
@@ -68,11 +67,12 @@ Start Recording with your own Azure Blob Storage defined to store the recording
 ```csharp
 StartRecordingOptions recordingOptions = new StartRecordingOptions(new ServerCallLocator("<ServerCallId>"))
 {
-   RecordingContent = RecordingContent.Audio,
-   RecordingChannel = RecordingChannel.Unmixed,
-   RecordingFormat = RecordingFormat.Wav,
-   RecordingStateCallbackUri = new Uri("<CallbackUri>"),
-   RecordingStorage = RecordingStorage.CreateAzureBlobContainerRecordingStorage(new Uri("<YOUR_STORAGE_CONTAINER_URL>"))
+    RecordingContent = RecordingContent.Audio,
+    RecordingChannel = RecordingChannel.Unmixed,
+    RecordingFormat = RecordingFormat.Wav,
+    RecordingStateCallbackUri = new Uri("<CallbackUri>"),
+    RecordingStorage = RecordingStorage.CreateAzureBlobContainerRecordingStorage(new Uri("<YOUR_STORAGE_CONTAINER_URL>"))
+    ExternalStorage = new BlobStorage(new Uri("<Insert Container / Blob Uri>"))
 };
 Response<RecordingStateResult> response = await callAutomationClient.GetCallRecording()
 .StartAsync(recordingOptions);
@@ -153,7 +153,7 @@ var resumeRecording = await callAutomationClient.GetCallRecording().ResumeAsync(
 
 Use an [Azure Event Grid](../../../../../event-grid/event-schema-communication-services.md) web hook or other triggered action should be used to notify your services when the recorded media is ready for download.
 
-An Event Grid notification `Microsoft.Communication.RecordingFileStatusUpdated` is published when a recording is ready for retrieval, typically a few minutes after the recording process has completed (for example, meeting ended, recording stopped). Recording event notifications include `contentLocation` and `metadataLocation`, which are used to retrieve both recorded media and a recording metadata file.
+An Event Grid notification `Microsoft.Communication.RecordingFileStatusUpdated` is published when a recording is ready for retrieval, typically a few minutes after the recording finishes processing (such as when meeting ends or a recording stops). Recording event notifications include `contentLocation` and `metadataLocation`, which you can use to retrieve both recorded media and a recording metadata file.
 
 Example of the event schema: