--- a/src/t38_terminal.c        2007-02-23 14:59:45.000000000 +0200
+++ b/src/t38_terminal.c        2007-03-22 10:52:45.000000000 +0200
@@ -436,7 +436,7 @@
            0,      0,   /* T38_IND_NO_SIGNAL */
            0,      0,   /* T38_IND_CNG */
            0,      0,   /* T38_IND_CED */
-         850,    850,   /* T38_IND_V21_PREAMBLE */
+        1000,   1000,   /* T38_IND_V21_PREAMBLE */
          943,   1158,   /* T38_IND_V27TER_2400_TRAINING */
          708,    923,   /* T38_IND_V27TER_4800_TRAINING */
          234,    454,   /* T38_IND_V29_7200_TRAINING */