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- Are Wireless Headset Conversations Secure?   Date: Wednesday July 25, 2007
FAQ Summary:
Are the conversations using a wireless headset secure?

FAQ Content:

The entire ranges of wireless headsets for offices (Plantronics & GN Netcom/Jabra) offer superior security against snooping. The informal spy over hearing the radio feed shall listen to a humming noise as the audio is coded & encrypted digitally. The headset product that is wireless does not permit 2 users occupying similar feeds & timeframe under usual situations as devices by themselves pick the top existing channel, while if it sense intrusion from another users then it immediately alters the feed. With events taking place in high density time slots where a better timeframe & feed is not available, 2 users close to one another & occupying similar feeds & timeframe could feel mutes at times due to audio being received or transmitted and at times distortion too but not some spying on audio.


Safety against planned over hearing is via user verification plus 64-bit actual digital voice recognition as per norm of accepted algorithm - EN 300 175-7. Wireless headsets made by us apply uniform accustomed frequency hopping while in idle-lock condition that while the ground & headset are within enclosed range but audio isn't enabled. This had be done to make sure the base & headset are there to look after alteration in spectrum of radio signal taking place because of further users and there being intruders, as need for link reliability improvement, there is a additional security layer effect. The sequence of hop is not fixed, physical environment based. It is an aperiodic functioning as with such a mode instead of altering feeds at regular time intervals, the feeds are altered at times when there happens to be a fresh users attempting to connect to the same feed & creating intrusion. Where there are multiple users, there is a security coat as different users alter feeds at will instead of remaining in a constant feed.


Security for wireless headset in Bluetooth:


Headsets having Bluetooth plus adapter converse through the normal 2.4 GHz link for Bluetooth that offers digital audio that's of high standard, distance covered up to thirty feet and improved encryption for protected communiqué. Plus a device verification, user permission, and encryption through voice.


The specification 1.0 for Bluetooth explains the algorithm for link encryption as a linage code having 4 linear feedback shift registers (LFSR). The breadth total derived from LFSR is 128, while spec states "the effectual key span is closeable from eight & one hundred twenty eight bits". Via this arrangement, Bluetooth can be used in nations with laws bordering encryption power, and "assisting an upgrade in future for safeguarding sans expensive redesign of either the encryption hardware and algorithms" as per Bluetooth patterns. Important generation & verification are most likely applying eight-round SAFER+ encryption formulae. Available information suggests security through Bluetooth shall be enough for nearly all purposes.


 



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