PEB20954E Ver la hoja de datos (PDF) - Infineon Technologies

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PEB20954E

Smart Integrated Digital Echo Canceller

Infineon Technologies 

PEB 20954

PEF 20954

Introduction

POTS

POTS

POTS

2 wires

HV-

SLIC

HV-

SLIC

HV-

SLIC

HV-

SLIC

POTS

Echo

POTS

HV-

SLIC

HV-

SLIC

4 wires

SLICOFI IOM-2

(CODEC)

EPIC

PEB 3065

PEB 2055

PCM30

SIDEC

PCM30

SLICOFI

(CODEC)

PEB 3065

PBX

FALC

56

PEB 2256

E1/T1

POTS

PBX:

Private Branch eXchange

SLICOFI: Signal Processing with integrated Subscriber

Line Interface Circuit Codec Filter

EPIC: Extended PCM Interface Controller

POTS: Plain Old Telephone Service

FALC: Frame and Line Interface Component

SIDEC in a PBX

Figure 4 SIDEC in a Private Branch Exchange (PBX)

SIDEC can be used in a PBX or Central Office (CO) to cancel the echo next to the

customer side (near end echo). The echo delay is kept short. The delay for this

application is usually less than 64ms and the SIDEC can cancel up to 32 channels.

Figure 4 shows a PBX with a T1/E1 interface FALC LH to the CO on the one side. On

the other side analog phones are connected.

A possible INFINEON solution with the SICOFI (includes D/A and A/D conversion) and

the SLIC (hybrid) to connect the analog phone is shown above.

Data Sheet

18

Rev. 2, 2004-07-28

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