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參數(shù)資料
| 型號： | PEB2445-N |
| 廠商： | SIEMENS A G |
| 元件分類： | 路由/交換 |
| 英文描述： | Multipoint Switching and Conferencing Unit - Attenuation MUSAC-A |
| 中文描述： | TELECOM, CONFERENCING CIRCUIT, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 8/70頁 |
| 文件大小： | 1236K |
| 代理商： | PEB2445-N |
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Semiconductor Group
8
02.96
PEB 2445
Overview
Conferencing
An important task in PCM voice handling is conferencing. I.e. several subscribers of a
digital PBX system would like to arrange a conference call. This task will be done in the
central switching network. Modern switching IC like the MUSAC-A fulfill this important
task in a cost effective way in the central switching unit. A powerful on chip Digital
Signaling Processor handles this requirement.
Definite time-slots will be added together to one subscriber signal. In order to ensure an
acceptable speech quality and reduce of echo and ‘singing’ problems, the input and
output channels have to be attenuated individually. Additionally, input signals below a
threshold programmable to different levels are disregarded. Another trick to lessen the
risk of instability in multiparty conferences is to invert every second voice channel. Odd
and even channels are substracted from one other.
Conferencing with the MUSAC
TM
-A
Conferencing means that PCM data of several subscribers are processed such that
each subscriber receives the contribution of the PCM data transmitted by all participants
of the conference. Except the data transmitted by himself.
Each subscriber is qualified by an input channel which corresponds to a certain input line
and time-slot of the MUSAC-A, and an output channel which corresponds to a certain
output line and time-slot of the MUSAC-A.
The data flow through the MUSAC-A in case of conferencing is illustrated in
figure 2
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEB2445P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM， Other/Special/Miscellaneous |
| PEB2447 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Memory Time Switch Extended Large MTSXL |
| PEB2447H | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Memory Time Switch Extended Large MTSXL |
| PEB2447HV1.2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PEB2447H-V12 | 功能描述:IC SWITCH MEM TIME CMOS 100-MQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:* 特色產(chǎn)品:NXP - I2C Interface 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:2 通道 I²C 多路復(fù)用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
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