enum MtasSipSteppingOLineSessionVersionDT

Numeric Enumeration: 0-1 (0=DISABLED,1=ENABLED)

References from:
MtasSip;

0
DISABLED
Not stepping O Line session-version if the SDP body is not changed (legacy behaviour)
1
ENABLED
Stepping O Line session-version even if SDP body is not changed (new behaviour)
  enum MtasSipSteppingOLineSessionVersionDT