diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index a85eb53605d61..1238e7b69a872 100755
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -1468,8 +1468,11 @@ public final class Call {
 
         /**
          * Writes the string {@param input} into the outgoing text stream for this RTT call. Since
-         * RTT transmits text in real-time, this method should be called once for each character
-         * the user enters into the device.
+         * RTT transmits text in real-time, this method should be called once for each user action.
+         * For example, when the user enters text as discrete characters using the keyboard, this
+         * method should be called once for each character. However, if the user enters text by
+         * pasting or autocomplete, the entire contents of the pasted or autocompleted text should
+         * be sent in one call to this method.
          *
          * This method is not thread-safe -- calling it from multiple threads simultaneously may
          * lead to interleaved text.