RTS TR-240 Especificaciones descargar pdf (Pagina 83)

15-1

Section 15 - Glossary

AAEC

Automatic and Adaptable Echo Cancellation. Automatically and continuously detect “line” echo and

assist in removing it for improved communication.

Acoustic Echo

The coupling of audio from a headset back into it’s own attached microphone, or another microphone

nearby. Result from using a digital intercom system with latency when (1) headsets are used with poor

acoustical isolation between the headphones and boom microphone; (2) multiple users are located very

close to each other; (3) by having a device with the microphone path enabled without an attached

headset; (4) by one user having their volume or microphone gain settings too high.

AP-only Mode

When a BTR-240 has all of it’s audio input interfaces disabled (local headset talk, 2-wire, 4-wire,

auxiliary), it will be in half-duplex.

Capacity

The number of full-duplex TR-240s that can be associated with a specific access point for reliable and

uninterrupted communications.

CCA

Clear Channel Assessment. When a wireless device senses the environment for energy on it’s frequency

before it transmits the signal. If the CCA fails, the device determines that the channel is busy and will

back-off / wait before attempting to send the signal again.

CCA Area

The area around an access point where the error rate of the receivers is high, “out of range”, but the

receiver can still sense the environment and detect if the channel is busy before transmitting it’s signal.

Cell-Type

Architecture

WLAN deployment strategy with multiple access points operating on non-overlapping RF channels,

with non-overlapping coverage areas.

Channel Utilization

The amount of activity on a particular wireless RF channel.

ClearScan

Intelligence that selects the optimal radio frequency channel to operate.

Coverage Area

Area around an access point where the receivers of devices can accurately receive and decode the data

packets with a minimal error rate.

De-tune

When the characteristics of the antenna become un-optimized for the frequency of use and results in RF

signal loss. Typically occurs when antenna is used near large metal objects.

Echo

When a user's voice is heard in the headset at a noticeable time interval after they have actually spoke.

Occurs from any digital system with audio latency.

Ethernet

(IEEE 802.3) standard for implementing local area networks.

Full-duplex

Mode of operation when a device has simultaneous talk and listen capabilities.

Half-duplex

Mode of operation when a device has listen-only capabilities.

IEEE 802.11

Set of standards for implementing wireless local area networks developed by the Institute of Electrical

and Electronics Engineers.

IP address

Internet Protocol address. A unique set of numbers to identify a particular device on a network.

LAN

(Wired) Local Area Network.

ACI

Adjacent Channel Interference. The interference between multiple access points on different RF

channels.

CCI

Co-channel Interference. The interference between multiple access points on the same RF channel.

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RTS TR-240 Especificaciones Pagina 83

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