· InviteErrorResponsesToTriggerCSFB = "380,414,499,606"
· SupportPEarlyMediaHeader = true
· RequirePreconditionsWhenMandatory = false
· VerstatFeatureCapability = "Enabled"
· IgnoreRegNotificationContactExpires = true
· TriggerCSFBOnSDPError = true
· Preconditions = "Supported"
· UseOutgoingSipUri = true
· EarlyMediaNeedsHeader = true