MultiModemDSVD User Guide

1 Introduction

Data

•Supports the ITU-T V.90 and K56flexTM standards for data transmission speeds up to 56K bps while maintaining compatibility with lower-speed modems.

Note: Under the 56K bps standards, you can asymmetrically download data from an ISP at speeds up to 53K bps, whereas you can upload only at speeds up to 33.6K bps.

•Supports the enhanced ITU-T V.34 standard, with data transmission speeds to 33.6K bps, while maintaining compatibility with lower-speed modems.

•Supports V.90 and K56flex speeds plus 33.6K, 31.2K, 28.8K, 26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K, 9.6K, 7.2K, 4.8K, 2.4K, 1.2K, and 0–300 bps.

•Supports automatic fallback to slower speeds in noisy line conditions, and fall- forward to faster speeds as conditions improve.

•Supports ITU-T V.42 LAP-M and MNP Class 3 and 4 error correction.

•Supports ITU-T V.42bis (4-to-1) and MNP 5 (2-to-1) data compression.

•Automatically disables compression when transferring already-compressed files.

•Can autodial, redial, pulse (rotary) and touch-tone dial.

•Detects dial tones and busy signals for reliable call-progress detection.

•Compatible with the standard AT command set used by most communication programs.

•Has MNP10 data throughput enhancement.

•Supports the H.324 protocol (videophone ready).

•Supports distinctive rings to route voice, data, or fax calls on a single phone line.

•Supports Plug and Play (PnP).

•Can be upgraded by flash programming.

Fax

•Supports V.17, Class 1, Class 2, and Group 3 fax communication standards, allow- ing it to communicate with other fax modems as well as with fax machines.

•Sends and receives faxes from your computer at 14,400 bps, 9600 bps, 7200 bps, 4800 bps, 2400 bps, or 300 bps.

Voice

•Full-duplex speakerphone support with adjustable speaker volume control. Can record and play back answering machine messages using included microphone and speaker.

•Remote/local telephone answering machine (TAM) capabilities include voice mail control, record and playback, and call screening.

•Supports AT#V voice commands.

•Supports DSVD digital simultaneous voice and data.

Multi-Tech Systems, Inc.

8