update docs

Author: bryantanderson

fern/voice-fallback-plan.mdx

@@ -12,6 +12,10 @@ slug: voice-fallback-plan
 
 Voice fallback plans give you the ability to continue your call in the event that your primary voice fails. Your assistant will sequentially fallback to only the voices you configure within your plan, in the exact order you specify. 
 
+<Note>
+  Without a fallback plan, your call will end in the event that your primary voice fails.
+</Note>
+
 ## How It Works
 
 When a voice failure occurs, Vapi will:
@@ -20,10 +24,6 @@ When a voice failure occurs, Vapi will:
   - Switch to the first fallback voice in your plan
   - Continue through your specified list if subsequent failures occur
   - Terminate only if all voices in your plan have failed
-3. If no custom fallback plan is configured:
-  - Automatically switch to other available voices
-  - Continue attempting different voices
-  - Terminate only if all available voices have failed
 
 ## Configuration