HP 520 5/XX, 525 5/XX manual Communications Options, 135

6 Aztech AT3300 Audio Fax/Data Modem

Introduction

Communications Options

As a data modem, the modem operates at line speeds of up to

28,800 bps. Error correction (V.42/MNP 2-4) and data compression (V.42 bis/MNP 5) maximize data transfer integrity and boost data throughput up to 115.2 kbps. The modem also operates in non-error- correcting mode.

Extended “AT” commands provide data, fax class 1 and class 2, and MNP 10 functions, while using minimal external ROM, RAM, and optional NVRAM.

The modem also operates over a dial-up telephone line, can autodial and autoanswer, and can operate in both synchronous and asynchronous modes.

As well as combining computer and telephone technologies, the communications option has the following features:

•28,800-bps internal modem.

•Answering machine with multiple-voice mailboxes.

•Automatic baud rate recognition at all speeds.

•Autodial and autoanswer.

•Caller ID (available from the local telephone company) to screen incoming calls.

•Data modem throughput up to 115.2 kbps.

V.34, V.FC, V.32 bis, V.32, V.22 bis, V.22A/B, V.23, and V.21; Bell 212A and 103.

ITU V.42 bis and MNP 5 data compression.

ITU V.42 and MNP 2-4 , MNP10, MNP 10EC error correction.

•Digitized speech compression or decompression or both.

•Enhanced ADPCM/PCM voice operation with concurrent DTMF detection.

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