Fix excessive fax detection (Thanks Steve Underwood!!!)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2068 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/dsp.c b/dsp.c
index 60d7ed1..b72063a 100755 (executable)
--- a/dsp.c
+++ b/dsp.c
@@ -596,7 +596,7 @@ static int dtmf_detect (dtmf_detect_state_t *s,
                                } /* Don't reset fax hits counter */
                }
 #else /* OLD_DSP_ROUTINES */
-               if (!hit && (fax_energy >= DTMF_TO_TOTAL_ENERGY*s->energy)) {
+               if (!hit && (fax_energy >= FAX_THRESHOLD) && (fax_energy >= DTMF_TO_TOTAL_ENERGY*s->energy)) {
 #if 0
                                printf("Fax energy/Second Harmonic: %f\n", fax_energy);
 #endif