enum MtasMmtSendAlertingToneInResponseCodeDT

0-1 (0=180 Ringing, 1=183 Progress)

References from:
MtasMmt; VtasMmt;

0
SEND_ALERTING_TONE_IN_180
Alerting tone sent in 180 Ringing
1
SEND_ALERTING_TONE_IN_183
Alerting tone sent in 183 Progress
  enum MtasMmtSendAlertingToneInResponseCodeDT