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參數(shù)資料
| 型號(hào)： | PEB2245N |
| 廠商： | SIEMENS AG |
| 英文描述： | ?Multipoint Switching and Conferencing Unit - Attenuation? |
| 中文描述： | ？多點(diǎn)交換和會(huì)議股-衰減？ |
| 文件頁(yè)數(shù)： | 15/70頁(yè) |
| 文件大?。?/td> | 1021K |
| 代理商： | PEB2245N |
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PEB 2245
Semiconductor Group
15
1.6
System Integration
Conferencing
The MUSAC is designed to connect any of the 512 PCM-input channels to any of 256 output
channels. Any input channel up to a total number of 64 can be handled in 21 independent
conferences simultaneously. Any conference combination from 3 subscribers in 21 conferences up
to 64 subscribers in only one conference is possible. In order to ensure an acceptable speech
quality and to reduce echo and “singing” problems, the input channels can be attenuated
individually by 0, – 3 dB, – 6 dB or – 9 dB and the output channels by 0 or – 3 dB; additionally, input
signals below a threshold programmable to four different levels are disregarded.
To lessen the risk of instability in multiparty conferences the voice signal from every second channel
can be inverted so that disturbance signals in odd and even channels are subtracted from one
another.
If more capacity is needed, several devices can be connected. By connecting the 16 PCM-input
lines in parallel to two MUSACs, a nonblocking switching matrix for 512 subscribers can be
implemented: 128 input channels can be selected for up to 42 independent, simultaneous
conferences.
Figure 6
shows such an arrangement. Due to the tristate capability of the MUSAC
larger switches with conferencing capability can be easily formed.
Figure 6
Memory Time Switch 16/16 for a Non-Blocking 512-Channel Switch with
Conferencing Capability
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| PEB2245-N | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:multipoint switching and conferencing unit (musac) |
| PEB22504 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Quad Line Interface Unit for E1⁄T1⁄J1 QuadLIU |
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| PEB22522 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:MULTI BIT RATE INTEGRATED CIRCUIT |
| PEB22522F | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:?Multi Bit-rate Integrated Circuit (MuBIC-2)? |
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