-<p>AM type is the same as in a T-frame. 6lowpan is the IANA-assigned code
-to identify this as a TinyOS packet. At this time, the exact value of
-this code has not been determined. To inform 6lowpan that this is not
-a 6lowpan packet, the code used MUST be in the range of 192-55.</p>
-<p>The AM type 6lowpan is reserved. A TinyOS program MUST NOT use it.</p>
+<p>AM type is the same as in a T-frame. 6lowpan is the NALP code to identify
+this as a TinyOS packet. NALP codes must be in the range of 0-63.
+TinyOS uses code 63.</p>
+<p>The AM type 63 is reserved for both T-Frames and I-Frames. A TinyOS
+program MUST NOT use it.</p>