Fix SIT segment frequency in tones.conf

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@884 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/conf/tones.conf

@@ -19,7 +19,7 @@ detect-callwaiting-cas => 2750,2130
 
 detect-fail1 => 913.8
 detect-fail2 => 1370.6
-detect-fail3 => 776.7
+detect-fail3 => 1776.7