peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 9
peb20954
Manufacturer Part Number
peb20954
Description
Smart Integrated Digital Echo Canceller Sidec
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20954.pdf
(132 pages)
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1.3
The SIDEC can be used for various applications.
Figure 2 to Figure 5 display typical examples.
Figure 2
In this interworking unit there are two SIEMENS products connected to the SIDEC. The
FALC PEB 2255 serves as a frame and line interface component whereas the IWE8 PXB
4220 operates as an interworking element.
The delays of networks and the inter working units are usually long. In the application
above the SIDEC cancels the echo that is generated by reflection on the near end side
and heard by the far end speaker. The SIDEC can cancel end echo paths (SDH or PDH
Network on near end side) up to 128 ms. For details see Figure 11.
For the set up illustrated in Figure 2 a application note "Using SIDEC in a Voice over
ATM Application" is available.
Preliminary Data Sheet
Network
SDH or
Near End
PDH
SDH:
PDH:
ATM:
Typical Applications
SIDEC in a Circuit Emulation Service Carried over ATM
Synchronous Digital Hierarchy
Plesiochronous Digital Hierarchy
Asynchronous Transfer Mode
PEB 2255
FALC
LH
PCM30
PEB 20954
SIDEC
IWU
PCM30
PXB 4220
IWE8
9
FALC:
IWE8:
IWU:
Network
ATM
Frame and Line Interface Component
Interworking Element (handles up to 8 PCM30 lines)
Interworking Unit
IWU
Network
SDH or
Introduction
Far End
PEB 20954
PDH
PEF 20954
04.99
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