diff -r -u -b -B zaptel-1.0.8.orig/mec2_const.h zaptel-1.0.8/mec2_const.h
--- zaptel-1.0.8.orig/mec2_const.h	2005-07-21 09:00:10.631489778 -0500
+++ zaptel-1.0.8/mec2_const.h	2005-07-21 09:02:02.337974769 -0500
@@ -6,7 +6,7 @@
 
 
 /* Convergence speed -- higher means slower */
-#define DEFAULT_BETA1_I 2048
+#define DEFAULT_BETA1_I 1024
 #define DEFAULT_SIGMA_LY_I 7
 #define DEFAULT_SIGMA_LU_I 7
 #define DEFAULT_ALPHA_ST_I 5
diff -r -u -b -B zaptel-1.0.8.orig/zconfig.h zaptel-1.0.8/zconfig.h
--- zaptel-1.0.8.orig/zconfig.h	2005-07-21 09:00:10.698478675 -0500
+++ zaptel-1.0.8/zconfig.h	2005-07-21 09:04:03.204941438 -0500
@@ -29,7 +29,7 @@
  * a small level 2 cache, to optimize for few channels
  *
  */
-/* #define CONFIG_CALC_XLAW */
+#define CONFIG_CALC_XLAW
 
 /*
  * Define if you want MMX optimizations in zaptel
@@ -38,7 +38,7 @@
  * processors and can cause system instability!
  * 
  */
-/* #define CONFIG_ZAPTEL_MMX */
+#define CONFIG_ZAPTEL_MMX
 
 /*
  * Pick your echo canceller: MARK2, MARK3, STEVE, or STEVE2 :)
@@ -53,7 +53,7 @@
  * Uncomment for aggressive residual echo supression under 
  * MARK2 echo canceller
  */
-/* #define AGGRESSIVE_SUPPRESSOR */
+#define AGGRESSIVE_SUPPRESSOR
 
 /*
  * Define to turn off the echo canceler disable tone detector,