A downconverter capable of being normally operated even in the case where a universal dual downconverter is made up by use of multiple downconverter circuits. The telescoping supports are hingedly connected to the tailgate within the storage compartment and are slidingly connected to the top rail of the tailgate extender. When placed in service, the blade outer air seal is positioned so that the central portion of the abradable coating with the greater thickness is located in a blade rub path of the turbine blades. However, if the amount of data in the jitter buffer is low, less data is removed from the jitter buffer and placed into the packet, and the remainder of the packet is filled with duplicates of some of the data in the packet or in the jitter buffer.