diff --git a/configs/misdn.conf.sample b/configs/misdn.conf.sample
index c99d864750..97e9caf38c 100644
--- a/configs/misdn.conf.sample
+++ b/configs/misdn.conf.sample
@@ -201,8 +201,6 @@ te_choose_channel=no
 ; default: no
 ;
 pmp_l1_check=no
-pp_l2_check=no
-
 
 
 ;
@@ -344,14 +342,6 @@ screen=-1
 ;
 ;echocancel=no
 
-; this disables echocancellation when the call is bridged between 
-; mISDN channels
-;
-; default value: no
-;
-echocancelwhenbridged=no
-
-
 ; Set this to no to disable echotraining. You can enter a number > 10
 ; the value is a multiple of 0.125 ms. 
 ;