SmartModem Reference Guide SmartModem VoiceMaster Socket Rocket Revision C January, 1996 YML212-3 NetComm Code Version V2.65 ISBN 0 947206 95 7 Copyright This manual is copyright. Apart from any fair dealing for the purposes of private study, research, criticism or review, as permitted under the Copyright Act, no part may be reproduced, stored in a retrieval system or transmitted in any form, by any means, be it electronic, mechanical, recording or otherwise, without the prior written permission of NetComm Limited. Disclaimer NetComm Limited accepst no liability or responsibility, for consequences arising from the use of this product. NetComm Limited reserves the right to change the specifications and operating details of this product without notice. Trademarks NetComm, ProRack, Faxnet, CellModem and Cooee are registered trademarks of NetComm Limited SmartModem, AutoModem, PocketModem, Smart/Rack, PC Fax Card, FastFix, TNP, and AutoSoft are trademarks of NetComm Limited MNP is a registered trademark of Microcom Inc Microcom Networking Protocol is a trademark of Microcom Inc Hayes is a registered trademark of Hayes Microcomputer Products Inc IBM is a registered trademark of International Business Machines Corporation MS-DOS is a registered trademark of Microsoft Inc WordStar is a registered trademark of Micropro International Corporation WordPerfect is a registered trademark of WordPerfect Corporation ©1995 NetComm Limited ACN:002490486 PO Box 379 North Ryde NSW 2113 Australia Incorporated in New South Wales Australia SmartModem Reference Guide i NetComm Limited SOFTWARE PROGRAM LICENSE 1. NetComm grants its Customers a non-exclusive license (the "License") to use any software programs (the "Programs") used in connection with the Products and supplied by NetComm. 2. The Customer assumes responsibility for the selection of the Programs to achieve its intended results and for the installation, use and results obtained from the Programs. 3. The Customer may: (a) use the Programs on a single machine; (b) copy the Programs into any machine readable or printed form for backup purposes in support of use of the Programs on a single machine (certain Programs may, however, include mechanisms to limit or inhibit copying); and (c) transfer the License to a purchaser of the relevant Products and the Customer shall at the same time either deliver all copies of the Programs, whether in printed or machine-readable form, to the purchaser or destroy any copies not so delivered. 4. The Customer shall bring to the attention of any transferee of the License these terms upon which the License is granted. 5. If for any reason the License is terminated, the Customer shall procure the destruction of all Programs (including all copies of them). 6. NetComm warrants that the Programs will carry out the functions described in the Product Manual but does not warrant that the Programs or any particular copies of them will be free from particular defects. If the Programs are found to be defective, NetComm will replace the Programs provided the medium on which the Programs reside is returned (shipping prepaid and properly packed) to NetComm. Proof of the Customer's license to the satisfaction of NetComm must accompany any request for warranty. 7. Improved or modified versions of the Programs may be made available under license to the Customer, at NetComm's absolute discretion and upon payment of its then current Charges. NetComm may require the return or destruction of previous versions of the Programs and evidence of the License to use those Programs. New versions shall be licensed to the Customer upon the same terms and conditions as are contained in this Clause 7 and the License to use prior versions of the Program shall terminate upon delivery to it of the new versions of them. ii SmartModem Reference Guide HARDWARE WARRANTY 1. NetComm grants a warranty in relation to the Products for the period set out in the relevant Product Manual, from the original date of purchase, on the following conditions: (a) this warranty covers component failure, defective materials and production defects only; (b) warranty if it complies with all of the terms of the Agreement and any other reasonable requirements of NetComm including producing such evidence of purchase as NetComm may require; (c) the Customer may not rely on this warranty if any cost, loss or damage to the Products or otherwise arises as a result of or in connection with the negligence or default (including but not limited to any failure to comply with the Product Manual or NetComm's training) of the Customer; (d) the Customer shall be solely responsible for delivery of the Products to and from NetComm's nominated premises; and (e) this warranty shall not apply to the Programs. 2. No Products shall be returned to NetComm for repair or replacement under any warranty provided under the Agreement without NetComm's prior written consent. LIMITATION OF LIABILITY NetComm will have no liability to its Customers under the above warranties beyond what is set out in them. NetComm liability under implied warranties and conditions is limited to that set out in its standard terms and conditions. SmartModem Reference Guide iii Contents CONTENTS Introduction ............................................................ 1 How to Use This Guide .......................................... 1 Conventions ............................................................ 3 Getting Started........................................................ 5 The AT Commands ................................................ 5 The Attention Code .......................................... 5 Multiple Commands ......................................... 5 The Escape Sequence ........................................ 6 The Repeat Command ...................................... 7 The Help Command ......................................... 7 Response Codes ................................................ 7 Dialling .................................................................. 8 Dial Modifiers .................................................. 9 Hanging Up ................................................... 11 Stored Number Dialling ................................. 12 Answering Calls .................................................... 13 Selecting Speeds .................................................... 15 Terminal Speeds ............................................. 15 Setting Terminal Speeds ................................. 16 Line Speeds ..................................................... 17 V.34 Modem Typical Settings ........................ 18 V.32bis Modem Typical Settings .................... 19 Flow Control......................................................... 21 RTS/CTS Flow Control ................................... 21 XON/XOFF Flow Control.............................. 21 Transparent XON/XOFF Flow Control .......... 22 Failsafe Flow Control ...................................... 22 The Inactivity Timer ............................................ 23 The Command Timer ........................................... 23 Configuring the Modem ....................................... 23 Viewing the Current Configuration ................ 24 Testing ................................................................ 25 The Test Timer ..................................................... 25 Terminating a Test - &T0 ..................................... 25 iv SmartModem Reference Guide Contents Local Analog Loopback Test - &T1 ....................... 25 Local Digital Loopback Test - &T3 ....................... 27 Grant RDL from Remote Modem - &T4 ............... 28 Deny RDL from Remote Modem - &T5................ 28 Remote Digital Loopback Test - &T6 ................... 28 Remote Digital Loopback with Self Test - &T7 .... 30 Local Analog Loopback & Self Test - &T8 ............. 32 Error Correction ................................................... 33 Error Correction Protocols .................................... 33 Data Compression ................................................. 34 Reliable Mode....................................................... 35 Auto-Reliable Mode ............................................. 35 Improving Performance with MNP 10.................. 37 Speed Changes ................................................ 38 Cellular Modem Users .................................... 39 Which Error Correction Do I Use? ........................ 39 Increasing Data Throughput with Error Correction & Data Compression ............. 40 Digital Simultaneous Voice & Data (Digital SVD) ..... 41 Setting up for Digital SVD ................................... 41 Using the Telephone to make Normal Voice Connections .......................................... 41 Starting a Digital SVD Connection after you have Established a Normal Voice Connection ..... 42 Starting a Digital SVD Connection after you have Established a Normal Voice Connection ..... 43 Security & Encryption .......................................... 44 The Security Menu................................................ 45 Entering Security Password ............................ 45 Adding and Changing Users ........................... 46 Removing Users ............................................. 47 Listing Existing Users .................................... 47 The Access Record .......................................... 47 Enabling Modem Security .............................. 48 SmartModem Reference Guide v Contents Quitting the Menu ......................................... 49 Callback Security .................................................. 49 Downloading the Security File ........................ 51 Uploading the Security File ............................ 51 Encryption ............................................................ 52 SuperSecure Advanced Security Mode ................... 54 Entering Key forEach User ............................. 54 Accessing Using SuperSecure .......................... 55 Connection ..................................................... 56 Disconnection ................................................. 56 Enabling Rotating Secondary Keys ....................... 57 Symmetrical Operation ......................................... 58 Automatic Synchronisation ................................... 58 Password Expiry Option ....................................... 58 Entering in Remote ........................................ 59 Entering in Local ............................................ 59 Minimum Length ........................................... 59 Additional User Options ....................................... 60 Up & Downloading the SuperSecure Database ...... 60 Security Database Lock Option ............................. 61 Outdial Disable Option ........................................ 61 Dial Stored Phone Numbers Only Option ............. 62 General Notes on Data Security ............................ 62 Synchronous Modes .............................................. 63 Synchronous Operation ......................................... 63 Terminal Speeds ............................................. 63 Line Speeds ..................................................... 64 Synchronous Mode 1 ....................................... 65 Selecting..................................................... 66 Dialling...................................................... 66 Hanging Up ............................................... 67 Answering Calls ......................................... 67 Synchronous Mode 2 ....................................... 68 Selecting..................................................... 69 Dialling...................................................... 69 vi SmartModem Reference Guide Contents Hanging Up ............................................... 69 Answering Calls ......................................... 69 Leased Line Operations ......................................... 70 Smart Leased Line Mode ................................. 71 Calling & Answering Using &L1 ................ 71 Auto Leased Line Operation (&L2 or &L3) .. 72 Hanging Up ............................................... 72 Improving the Reliability of Leased-Line Connections ............................. 73 Dumb Mode Operation ........................................ 74 Selecting Dumb Mode .......................................... 74 on Desktop Modems ....................................... 74 on ProRack Modems....................................... 75 Setting up your Modem ........................................ 75 Selecting Communications Speeds on Desktop Modems ...................................... 76 on ProRack Modems....................................... 77 Hints for Unix Computers & Multiplexers ............ 78 Dialling in Dumb Mode ....................................... 78 Dialling with telephone handset ..................... 79 Using Talk/Data B ...