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PSB4595

Analog Line Interface Solution ALIS

Siemens AG 

PSB 4595 / PSB 4596

Analog Line Interface Solution

System Integration

3

System Integration

ALIS can be used in different modem applications to connect the data pump to the TIP/

RING wire.

3.1 ALIS with DSP-based Modem

For a modem data pump, the ALIS provides the front-end to the tip/ring.

Data Pump

V.34

SI

V.90

ALIS-D

PSB 4596

ALIS-A

PSB 4595

Tip/Ring

Note: SI: Serial Interface

Figure 4 DSP-based Modem Application

Isolation is provided by a capacitor interface, without transformer. This allows very flat

frequency response over the entire voice band, even at low frequencies.

In V.90 Modem applications, the 50/60 Hz high-pass filter can be turned off.

Semiconductor Group

15

Data Sheet 06.98

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