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1 Introduction
3
Data
• Supports K56flex
TM
and ITU-T V.90 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.
Note: Under the 56K bps standards, you can asymmetrically download data from
an ISP at speeds up to 53K bps, but upload only at speeds up to 33.6K bps. Client-
to-client operation, including leased line operation, is also limited to 33.6K 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.
• Supports both synchronous and asynchronous data transfer.
• Both models support two-wire leased line operation. The BL model also supports
four-wire leased line operation with dial backup and leased line restoral.
• Supports callback security and remote configuration.
• 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.
• Supports the H.324 protocol (videophone ready).
• Supports Plug and Play (PnP).
• Can be flash upgraded.
Fax
• Supports V.17, Class 1, Class 2, and Group 3 fax standards, allowing it to commu-
nicate 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.