Avaya a500 Mode D'Emploi

Cajun A500 ATM Switch Overview

Cajun A500 ATM Switch User Guide

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Data Flow

There are three types of messages that the system can receive: 

U PPP link packets

U PPP Data packets

U Raw packets

The Raw packets are directed to the modem script handler. The PPP data and link packets 

are decoded into a PPP owned buffer and the Async buffer is returned to the Async 

buffer pool. The PPP buffers are sent to the PPP daemon which sends the link packets to 

the appropriate handler (LCP, IPCP). 

Transmit buffers can be generated from the same 3 sources: 

U Modem chat script (raw)

U PPP link information

U Application data from PNA

The link and data buffers are encoded and copied into Async buffers and then 

transmitted. The raw buffers follow a similar path except they are not encoded as PPP 

buffers.