A biocompatible implant for continuous in vivo release of a neurotoxin over a treatment period extending from one month to five years. Thus, speeding up of failover preparation procedures is realized. The identifier also can be used to place the mobile device in a power conservation state. A communication is received that includes a phantom address, at least a portion of which includes the second number, and a message. At a reception end, a complementary switch comprises an input from which a data stream is received, the data stream comprising interleaved portions of traffic, a number of output queues and a processor, wherein the processor is configured to separate the interleaved traffic into respective ones of the output queues for reassembly of individual traffic streams from the data stream. Logic is to help measure a characteristic relating to the supply voltage based at least in part on the delayed signals.