This API is available on Firefox OS for internal applications only.
Summary
reason is a read-only property that indicates the reason the call is being forwarded.
Syntax
var reason = instanceOfMozMobileCFInfo.reason;
Value
Return a number.
The value is equal to one of the MozMobileCFInfo.CALL_FORWARD_REASON_* constant values.
Specification
Not part of any specification.