Nothing Puts The 14,400 Speed Of V.32bis To Work For You Like A Courier V.32bis With ASL With a Courier V.32bis modem, you can transmit at 14,400 bps, full duplex - that is, both directions simultaneously. With V.42bis data compression, throughput can reach 57,600 bps. Throughput on a typical text file is about 50,000 bps. And a Courier makes optimum use of that speed. Only a high speed Courier gives you ASL - Adaptive Speed Leveling. Modems have to slow down for line noise. But when two Courier V.32bis modems are working together, they continue to monitor the line and speed up again the moment conditions improve. All other modems leave you in "low" for the remainder of the transmission. That can turn a one minute call into a 5 or 10 minute call. Two Courier V.32bis modems don't have to stop and then resynchronize every time they switch speeds either. There are none of those irritating pauses when you're at the keyboard. Two Courier V.32bis modems train up in 3 or 4 seconds, instead of the typical 15. In polling applications, that can add up to significant savings. The Courier V.32bis modem uses powerful Intel 80188 microprocessors. Even with all the calculations involved in V.42bis error correction and data compression, it has the power to transmit simultaneously in both directions at 14,400 bps. A modem using the slower Z80s or 8031s can't handle that kind of load. You're not getting what you paid for. If you need compatibility with V.32 and V.32bis modems from a variety of makers, the Courier V.32bis has it. If you need international compatibility, the Courier V.32bis gives it to you. The Courier V.32bis puts you in high speed asynchronous communication with the wide world of PC's, minis, and terminals. And you get the synchronous communication you need for mainframes. Because it's full duplex, it's also ideal for host-to-host communications or bridging LANs. With a Courier V.32bis modem, you're not just getting high speed. You're getting high performance. HIGH SPEED FEATURES AND BENEFITS: High speeds: 14.4, 12.0, 9.6, 7.2, and 4.8 Kbps. Maximum throughput: 57.6 Kbps. You can save up to 90% on a phone call. High speed compatibility: CCITT V.32bis at 14.4, 12.0, 9.6, 7.2, and 4.8 Kbps. CCITT V.32 at 9.6 and 4.8 Kbps. Fully compatible with all high speed national and international standards. Symmetrical full duplex operation gives you the efficiency you need for two-way file transfers, and response is almost instantaneous when you're working interactively. Asynchronous transmission at all speeds connects you to the wide world of PC's, minis, and terminals. Synchronous transmission at speeds above 300 bps for communication with mainframes. STANDARD ON ALL COURIER HIGH SPEED MODEMS Features And Benefits COMPATIBILITY: CCITT V.22bis at 2400 bps. CCITT V.22 and Bell 212A at 1200 bps. CCITT V.23 at 600 and 1200 bps. CCITT V.21 and Bell 103 at 300 bps. You have on-line compatibility with all popular 300 - 2400 bps modems. ERROR CONTROL AND DATA COMPRESSION: CCITT V.42 error control. MNP Levels 2-4 error control. CCITT V.42bis data compression. MNP Level 5 data compression. You get 100% error-free data, and maximum throughput. Trellis-coded modulation is twice as effective as QAM in protecting your data against phone line noise. CONVENIENCE: Nonvolatile Random Access Memory. Easily programmable memory keeps user-defined configuration. Phone number storage gives you an auto-dial directory of four frequently used numbers. Auto Dial. Using the "AT" command set in asynchronous mode, you can dial or program from your keyboard. Auto Answer. You don't have to run for the phone or stand by a switch. Automatic Redialing will redial up to 10 times, automatically. Useful if you know the modem you're calling is frequently busy. ASL (Adaptive Speed Leveling (tm)), up or down, gives you 100% error- free transmission at the highest possible speed under prevailing line conditions. Automatically selects the highest speed and error control protocol supported by the remote unit. You get the maximum possible throughput, and you don't have to worry about compatibility. On screen help gives you instant answers to most questions without opening the manual. Externally accessible DIP switches. No disassembly required. RS232 pins 2 and 3 (Send and Receive) are switch-reversible. Easy to use with terminal, computer or printer. (Desktop models only.) Flow control allows fixed RS232-C rates up to 57.6 Kbps. You're not confined by a slow port speed. 12 LED front panel indicators. You can clearly see what your modem is doing. Diagnosing a problem is easy. (None on internal models.) Built-in speaker with volume control. You can hear call progress. (Not on rackmount models.) Bottom label help summary. Particularly helpful for setting dip switches. (Desktop models only.) Complete diagnostic capability. Local analog, digital loopback, and remote digital loopback self-testing make pinpointing a problem easy. U.S./CCITT answer sequences. You're compatible with the current standard. FOR YOUR INFORMATION Warranty: A full 2-year warranty on parts and labor, which you may extend indefinitely for a nominal fee. Package Contents: Modem, power adapter, RJ11C phone card, manual. IBM, IBM PC, IBM PC/XT, IBM PC/AT AND ISM Personal System/2 are trademarks of International Business Machines Corp. U.S. Robotics and the USRobotics logo are registered trademarks, and Courier, Courier HST, Courier HST Dual Standard, Courier V.32bis, ASL, Total Control, and Rackmount 32 are trademarks of U.S. Robotics, Inc. MNP is a registered trademark of Microcom, Inc. Apple is a registered trademark of Apple Computer, Inc. UNIX is a trademark of AT&T Information Systems. Intel is a registered trade mark of Intel Corp. (c)1990, 1992, U.S. Robotics