Multimedia
Telephone / VoIP
Name
Description
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ITLEC
The Echo Canceller implements line echo cancellation algorithm conforming to ITU-T G.168-2000 specifications.
ITDTMF
DTMF (Dual Tone Multiple Frequency) signaling system is used for touch-tone dialing. Each of the 16 digits are signified by pairs of tones, one from a "low" group - 697Hz, 770Hz, 852Hz, 941Hz - and the other from a "high" group - 1209Hz, 1336Hz, 1477Hz, 1633Hz.
ITCall
Call Progress Tones are audible tones set from switching systems to calling parties to show the status of calls.
ITCaller
Caller Identification is a method of transmitting the information of the caller to the called subscriber via a burst of FSK or DTMF data during the On-hook/Off-hook state of a Telephony Equipment.
ITVAD/CNG/DTX
VAD (Voice Activity Detection) / DTX (Discontinuous Transmission) / CNG (Comfort Noise Generator) are used to reduce the transmission rate during inactive speech periods while maintaining an acceptable level of output quality.
ITFDV
Call discriminator is required in a Voice / Media Gateway to provide transparent service for various types of calls.
ITPLC
Packet Loss Concealment is used to recover from lost frames/packets in packet based telephony systems.Low Complexity Concealment algorithm based on ITU-T G711 Appendix I.
ITJitter
Adaptive Jitter Buffer (AJB) implementation enables smooth play out of audio in a packet based reception such as voice-over-packet-systems.
ITAEC
Acoustic Echo Cancellers are used to cancel out the echo produced by the acoustic path between the speaker and microphone in hands-free telephone and video/audio conferencing solutions .
ITRTP
RTP is as an end-to-end transport protocol used in transmission of real-time data, such as interactive audio or video.
ITRTSP
Real Time Streaming Protocol implementation is compliant to RFC 2326 and is usable in low footprint and high performance applications.