use system default dtmf duration instead of hardcoded value

diff --git a/libs/freetdm/mod_freetdm/mod_freetdm.c b/libs/freetdm/mod_freetdm/mod_freetdm.c
index 9d6eac94f5283160bea1b0b8c36d8d045f4479ca..c17b28cb774b42e94cdebc0d480c13c0865e2046 100755 (executable)
--- a/libs/freetdm/mod_freetdm/mod_freetdm.c
+++ b/libs/freetdm/mod_freetdm/mod_freetdm.c
@@ -725,7 +725,7 @@ static switch_status_t channel_read_frame(switch_core_session_t *session, switch
        }
 
        while (ftdm_channel_dequeue_dtmf(tech_pvt->ftdmchan, dtmf, sizeof(dtmf))) {
-               switch_dtmf_t _dtmf = { 0, SWITCH_DEFAULT_DTMF_DURATION };
+               switch_dtmf_t _dtmf = { 0, switch_core_default_dtmf_duration(0) };
                char *p;
                for (p = dtmf; p && *p; p++) {
                        if (is_dtmf(*p)) {