RTS XCP-48-RJ45 Bedienungsanleitung PDF herunterladen (Seite 50)

NOTE: A CODEC is an algorithm used to compress audio. There are 5 Codices support by Telex: G.711μs law, G.711A

law, G.729AB, G.723 (5.3k) and G.723 (6.3k). The type of CODEC will dictate the quality of audio you hear and

the network bandwidth used. The packet size determines how much audio data is carried across the network in

each transmitted packet. The CODEC type and pack size chosen require different amounts of bandwidth from the

network ( See “Specifications” on page 38.). As with CODEC type, the packet size you choose for the audio

transfer will affect the audio you hear and the bandwidth you use over the network. The larger the audio packet

you choose to use, the lower the bandwidth used. However, the larger packet size can result in a higher delay and

longer gaps if the packet is lost. On the other hand, the smaller packet sizes result in larger bandwidth use, but

lower delays and smaller gaps if the packet is lost. The Intercom System Engineer and the Network

Administrator may want to work together in choosing the CODEC type and packet size suitable for the size of

the network, so degradation of network resources does not happen.

15. Select Enable VAD, if you want to conserve bandwidth when the audio level is below a given threshold.

NOTE: VAD (Voice Activity Detection) saves network bandwidth by stopping the flow of audio packets when silence is

detected. VAD is similar to VOX.

At this point you may choose another channel to configure or choose another card to configure.

16. Once you are completely finished, click Apply.

Apply sends all of the changes to all the cards in the intercom, or click Cancel to discard all changes you made.

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RTS XCP-48-RJ45 Bedienungsanleitung Seite 50