3f1efde0d073d9be80a4a9f9181b609424fc742b.diff

diff --git a/gsm-receiver/README b/gsm-receiver/README
index 190c6cb..9f8898c 100644
--- a/gsm-receiver/README
+++ b/gsm-receiver/README
@@ -12,6 +12,7 @@ Usage:
      0B : TS0  "FCCH + SCH + BCCH + CCCH"
      1S : TS1  SDCCH/8
      2T : TS2  Traffic
+     7P : TS7  Packet Data Channel
 
 * Specifying a key will decrypt all traffic burst (SDCCH, SACCH, TCH)
   using A5/1 before decoding