A wireless local area network transceiver, an integrated circuit chip, a PLL device and a method are provided that may reduce influences of switching noise. The RP may be either a router configured with the rendezvous point address on its loopback interface, or one of several routers connected to an RP link with the RPA. This approach helps keep spurious injected segments out of the TCP re-assembly buffer. A control value is calculated for each patient from the corresponding set of measurements. A temperature control unit is further integrated within such housing to provide a temperature-controlled environment within the housing. The equipment may include a non-rigid bag covering at least part of an oxygen mask.