PSB4860 Просмотр технического описания (PDF) - Infineon Technologies

Номер в каталоге

Компоненты Описание

производитель

PSB4860

ICs for Communications Sophisticated Answering Machine with Echo Cancellation SAM-EC

Infineon Technologies 

PSB 4860

In figure 10 a phone conversation using the speakerphone is in progress. One party is

using the base station of a DECT system while the other party is using a mobile handset.

At the same time an external call is serviced by the answering machine. In the current

state a message (recorded or outgoing) is being played back. In this case the DTMF

detector is used to detect signals for remote access while the CPT detector is used to

determine the end of the external call.

SSDI/IOM®-2

Channel 1

loud-

speaker

micro-

phone

line

out

line

in

0

00

0

0

acoustic side

Speaker-

phone

line side

0

0

0

Line Echo

Canceller

CPT

decoder

Equalizer

Speech

decoder

Memory

DTMF

Detector

SCI

Figure 10 Functional Units - Simultaneous Internal and External Call

Data Sheet

28

2000-01-14

Share Link: