If the object has a value of true(1), mode changes will be
made to only neighboring modes set to
cvVoIPCallActiveBitRates object. If the value is false(2),
mode changes will be allowed to any modes set to
cvVoIPCallActiveBitRates object. This object is not
instantiated when the object cvVoIPCallActiveCoderTypeRate
is not equal to gsmAmrNb enum.