Widex USB LINK - Page 22

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QualityofServiceforWirelessTechnologyintheWidexLinkSystem
WidexLinkwirelesstechnologyenablescommunicationbetweentwopartnersofabinauralpair
ofCLEARhearingaidsandwiththeirmatchedexternaldevicesTherequirementsforthequality
ofservice(QoS)varyamongthevariouscomponentsandtheirintendeduserscenarios
ForprogrammingtheserequirementsincludeaBER(BitErrorRate)betterthan
-
atabitrate
ofkbitssasemi-duplextransmissionwitharequiredacknowledgeatransmissionlatencyin
eachdirection(x)andareceive-to-transmitmode(RXtoTX)timeThedataaresavedinthe
hearingaidevenwhentransmissionisinterrupted
WirelessSecurityMeasures
Securityofthewirelesssignalsisassuredthroughdevicesystemdesignthatincludes
• Individual MAC address for each unit which is checked during each transmission.
• A built-in pairing table which specifies valid and legitimate pairing among units
• A proprietary Widex communication protocol which checks the package numbers
during each transmission.
• A Cyclic Redundancy Check (CRC) to check data validity and correct errors,
• A secure Bluetooth connection that is pass-key protected
• Authorized usage of programming software with single log-in