diff --git a/Subsystems/Commands-Telemetry.md b/Subsystems/Commands-Telemetry.md
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--- a/Subsystems/Commands-Telemetry.md
+++ b/Subsystems/Commands-Telemetry.md
@@ -3,7 +3,8 @@
 ## Telemetry ( tlmGUI/ directory ):
 Telemetry is sent from the running cFE/CFS as CCSDS telemetry packets encapsulated in 
 UDP/IP packets. The `enable telemetry` command tells the TO_LAB application to start 
-sending packets to a UDP port (port #1234 by default) on the `localhost` or a specified IP. 
+sending packets to a UDP port on the `localhost` or a specified IP. By default, the TO_LAB application
+listens to UDP port 1234 for commands, and sends telemetry to the tlmGUI at UDP port 1235.
 
 Start the telemetry system using the Ground System's main window.