Direct-Access Arrangements Are Crucial To Successful to Embedded-Modem Design

Embedded communications applications, such as credit-card verification, transferring medical data (biometrics), payphones, and cable and satellite television, connect either directly to another modem or else through the Internet. For such embedded modem applications, does the designer use a modem module or card, which can sometimes cost more than the modem in your PC, or else build a custom modem from the ICs presently available at a reasonable cost?

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