A method of initiating a data session between a wireless device and an information network over a wireless communication link includes establishing a voice session between the wireless device and a voice recognition application over the wireless communication link. The hardware complexity required to perform the channel estimation to process a plurality of different burst types is reduced. The present invention will be able to digitally record the sounds from the stethoscope through the use of an electronic amplification system and a built in memory stick. The present application also provides a method of treating dermatologic disorders mediated by a melanocortin receptor using the stable topical composition.