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Bluetooth 2.0 + EDR. This version of the Bluetooth Core Specification was released before 2005. The main difference is the introduction of an Enhanced Data Rate (EDR) for faster data transfer. The data rate of EDR is 3 Mbit/s, although the maximum data transfer rate (allowing for inter-packet time and acknowledgements) is 2.1 Mbit/s.
The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.
Bluetooth HID is a lightweight wrapper of the human interface device protocol defined for USB. The use of the HID protocol simplifies host implementation (when supported by host operating systems) by re-use of some of the existing support for USB HID in order to support also Bluetooth HID. Keyboard and keypads must be secure.
Plantronics manufactures mobile headsets, including a line of Bluetooth headsets for mobile phones. The Pulsar 590, for example, is designed for use with Bluetooth- and A2DP-enabled cellphones. Computer and gaming headsets. Plantronics manufactured headsets for PC audio and online and console gaming via its GameCom and .Audio and RIG Gaming labels.
The Bluetooth Headset was criticized for having poor call quality, a lack of features and a high price tag. Bluetooth Headset Series 2. The "Bluetooth Headset Series 2" was sold from 2011 until 2015. Compared with its predecessor, the Series 2 included A2DP and a revised ambient noise sensing system. The Series 2 model was judged a "solid ...
The TSO for aviation headsets is C139, which includes requirements to withstand extreme heat and cold, decompression, and electromagnetic interference. Some commercial airlines require the use of TSO-compliant headsets, as part of their operations manual. This is a choice by the airline, not an FAA requirement.
The "A20 Aviation Headset" was released in 2010 as the successor to the "Aviation Headset X" (aka A10). It has a claimed battery life of 45 hours (using two AA batteries) or can be powered by the airplane's electrical system. There are two versions, one with Bluetooth and one without. An updated version of the A20 was released in 2015.
United States Army Field Manuals. FM-34-45. United States Army Field Manuals are published by the United States Army 's Army Publishing Directorate. They contain detailed information and how-tos for procedures important to soldiers serving in the field. As of July 2007, some 542 field manuals were in use.