Monitor
For confident clients running live events, the Monitor Page is your go-to for complete, at-a-glance visibility into your entire captioning workflow during live events — all in one place.
Designed for hands-on monitoring and quick troubleshooting, this powerful interface shows you what’s connected, what’s working, and where attention might be needed.
One Page. Total Clarity.
See a live flow diagram of your full captioning pipeline — from source audio to caption delivery.
Instantly check our 'trinity' targets:
The Human Connection
Captioner Status
See if a captioner is connected and writing.
Chat
Check in with your Line 21 captioning support team via per-project chat.
The AI Elements
ASR
View real-time speech to text activity.
Translations
Confirm which target translations are active and processing.
Proofreader
Observe real-time edits by our intelligent Proofreader.
The Audience Experience
Captions Out
Ensure live captions are reaching your viewer destinations.
Audio In
Confirm your media input is feeding into Line 21.
Video Stream
Live health check of your video stream.
We provide the tools to make your content accessible and engaging. Contact us today to learn more about how we can support your captioning needs.
Created by L21 Limited, 2023-2025.