CounterPath Bria 3.0 for Mac User Guide - Retail Deployments - Manual (Page 80)

CounterPath Corporation
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C Glossary
AEC Acoustic echo cancellation. Processing of the audio or video signal to reduce the echo
effect that can arise with a speakerphone or that can arise if the sound from the
speakerphone or headphone leaks into the microphone.
AGC Automatic gain control. Processing of the audio or video signal to adjust the
microphone volume level so that the other party does not hear the distortion that
might be caused by too high a microphone input or too low volume (due to too low
input level).
Broadband Broad or wide bandwidth. In data transmission, the wider the band, the more data it is
possible to transmit in a given time span. A cable, DSL and ADSL connection to the
network provide broadband for data transmission. A dialup or ISDN connection
typically provide a narrow bandwidth for data transmission.
Codec The format by which audio or video streams are compressed for transmission over
networks.
Dial plan The rules that Bria follows in order to interpret the softphone address or phone
number that the user has entered and to modify the number or address, as required, to
ensure that the call will be placed successfully.
DTMF Dual-tone multi frequency. DTMF is the system that is used in interactive voice-
response menu systems such as the menu system for accessing voicemail messages.
The DTMF system allows the user to interact with the menu by pressing keys on a
dialpad or keyboard.
IM Instant Messaging. A technology that lets users send text message and files for near
instantaneous delivery and display on each others’ computers.
IP Internet Protocol. A data-oriented protocol used for communicating data across a
network. IP is the most common protocol used on the internet.
IP address A unique number that devices use in order to identify and communicate with each
other on a computer network using the IP standard.
Media In a VoIP phone call, the audio and video portion of the information in a call.
Compare to “Signaling”.
MOV The Mac QuickTime multimedia container format. MOV files contain both audio and
video data in a standard container that allows simultaneous playback.
MWI Message Waiting Indicator. An indicator that there is a voicemail message for the
owner of an account.
Narrowband In data transmission, the wider the band, the more data it is possible to transmit in a
given time span. A cable, DSL and ADSL connection to the network provide
broadband for data transmission. A dialup or ISDN connection typically provide a
narrow bandwidth for data transmission.
Presence An instant messaging feature that allows users to share information about their online
status.
Proxy See SIP account.
PSTN Public Switch Telephone Network. The traditional land-line phone network.
RFC Request for Comment. A document that describes an aspect of an internet technology.
An RFC may be a proposed, draft or full internet standard.
RTP Real-time Transport Protocol. A protocol for delivering the media portion of a data
transmission over an IP network. SRTP is another media protocol.
Signaling In a VoIP phone call, the information in a call that deals with establishing and