Paradyne 3825PLUS (7 of 14), AT Commands

AT Commands and S-Registers

4-93825-A2-GB30-20 November 1996

Table 4-1

(7 of 14)

3825

Plus

AT Commands

&F

n

 Select Factory Default Configuration Options

Loads factory configuration options into the Active (Operating) area. The &F5 and &F6 options invoke the Enhanced

Throughput Cellular (ETC) feature.

&F0 Async Dial

&F3 UNIX Dial

&F5 Cellular (Mobile)

&F6 Cellular (PSTN)

If your modem is attached to a cellular telephone, use the &F5 command to configure the modem for cellular

communications. &F5 sets the following configuration options:

AT

Command

Option Value

Maximum Frame Size \A4

Error Control Mode \N4

Auto-Answer Rings S0=3

No Answer Timeout S7=120

No Carrier Disconnect S10=100

V.32bis Train S43=1

V.32bis Autorate S76=3

V.42 ARQ Window Size S89=9

Cellular Enhancements S91=1

If your modem is attached to a normal dial telephone line but sometimes communicates with a modem that is attached to

a cellular phone, use the &F6 command. &F6 (Cellular(PSTN)) sets the following configuration options:

AT

Command

Option Value

Transmit Level &I99

Error Control Mode \N4

No Answer Timeout S7=120

No Carrier Disconnect S10=100

V.32bis Train S43=1

V.42 ARQ Window Size S89=9

Cellular Enhancements S91=1

&G

n

 V.22bis Guard Tone

Determines whether the V.22bis guard tone is disabled, set to 550 Hz, or set to 1800 Hz.

&G0 Disable (Default for Denmark, Finland, Germany, Netherlands, North America, Norway, Singapore, Sweden,

and Turkey.)

&G1 550 Hz

&G2 1800 Hz (Default for Belgium, France, Japan, Switzerland, and UK. See Appendix F.)

Contents

Main Plus Quick Installation for the COMSPHERE 3825 Modem COMSPHERE 3825 Plus Modem Users Guide 3825-A2-GB30-20 Warranty, Sales, and Service Information Trademarks Important Safety Instructions Notices Government Requirements and Equipment Return United States Notice To Users Of The Public Switched Telephone Network Within the U.S.A., call 1-800-870-2221 Canada United Kingdom Ringer Equivalence Number Connection to Leased Lines Connection to Supply Mains All European Countries Japan Notices Restrictions Table of Contents Preface 1. Introduction 2. 3825Plus Modem Installation 3. Fax Operation Page Page Preface Objectives and Reader Assumptions How to Use This Manual Related Documents Introduction Features Modem Front Panel and Status Indicators Status Indicators (LEDs) Table 1-1 LEDs Label Color Indicates Plus 3825 Modem Installation Modem Package Customer-Supplied Equipment Installation DTE Connection Dial-Line Connection 2-Wire Leased-Line Connection Telephone Connection AC Power Transformer Connection Modem Power-Up Selecting Factory Configuration Options Recovering AT Commands Recovering AT Commands Initialization Strings V.25bis Applications Synchronous Leased-Line Applications AT&T Exclusive Dialing for DATAKIT Applications Fax Operation Fax Operation AT Commands and S-Registers Operating Modes Switching Between Data Mode and Online Command Mode Escape Sequence and Escape Guard Time Command Guidelines AT Command List Page (2 of 14) AT Commands x ATDT9,5551234 (3 of 14) AT Commands (4 of 14) AT Commands r r (5 of 14) AT Commands (6 of 14) AT Commands (7 of 14) AT Commands (8 of 14) AT Commands (9 of 14) AT Commands Recovering AT Commands (10 of 14) AT Commands (11 of 14) AT Commands n n x (12 of 14) AT Commands (13 of 14) 3825 AT Commands (14 of 14) AT Commands n S-Register List (2 of 10) S-Registers (3 of 10) S-Registers (4 of 10) S-Registers (5 of 10) S-Registers (6 of 10) S-Registers (7 of 10) S-Registers (8 of 10) S-Registers (9 of 10) S-Registers (10 of 10) S-Registers Security Password Types Originate Security Answer Security Callback Security Security Configuration Examples DTE Only VF Only VF and DTE Callback Table 4-3 Security Commands Page Remote Access Remote Access Page A Result Codes Table A-1 (1 of 3) Result Codes Numbers (1) Numbers (2) Word Description Table A-1 Result Codes Numbers (1) DescriptionWordNumbers (2) Page B Troubleshooting Page Table B-4 Modem VF Connection Symptom Action terbo, Page Automatic Firmware Download Download Failure C Technical Specifications Table C-1 (1 of 2) Model 3825 Technical Specifications Specifications Description Page D Pin Assignments EIA-232-E Pin Assignments JM8 to RJ11 Crossover Cable CCITT V.25bis Dialing Commands and Responses E Call Request Commands Call Request with Number Provided (CRN) Call Request with Stored Memory Address Provided (CRS) Call Response Call Failure Indication (CFI) Call Answer Commands Incoming Call (INC) Disregard Incoming Call (DIC) Connect Incoming Call (CIC) Program Normal (PRN) Command Response Valid (VAL) Invalid (INV) Page Country-Specific Configuration Options F Configuration Options by Country Page Page Page Page Glossary Page Page Page Page Page Page Index Symbols Numbers A B C D E F H I J L P Q R S T U V W X