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Professional External Modem

USER'S MANUAL

560UF/L & 560UF/D External Modem

QUANTUM DATA SYSTEMS (HK) LTD.

ACTIVE Professional External Modem

USER`S MANUAL

For Models: 560UF/L & 560UF/D

The contents of this manual are subject to change without prior notice.

Quantum Data Systems (H.K.) Ltd. shall not be held liable for technical or editorial omissions or errors made herein; nor for incidental or consequential damages resulting from the furnishing, performance or use of this material.

Trademarks

nHayes - Hayes Microcomputer Products, Inc.

nMNP - Microcom Inc.

nIBM - International Business Machines Inc.

nTelix - EXIS Inc.

nBTLZ - British Telecommunications.

nMirror III - Softklone Inc.

nProcomm - Datastorm Technologies, Inc.

nHomefax 2 - HongKongTelecom.

nActive, QFax & QCom - Quantum Data Systems (H.K.) Ltd.

nOther product names mentioned herein are registered trademarks of their own companies.

Edition 2.0 September, 2003

© 1999 Quantum Data Systems (H.K.) Ltd.

Quantum Data Systems (H.K.) Ltd.

Unit 9, 7th Floor, Block B, Hoi Luen Industrial Centre,

55 Hoi Yuen Road, Kwun Tong, Hong Kong Tel : (852) 2304-1199

Fax : (852) 2341-3292

Web site : http://www.quantum.com.hk E-mail :info@quantum.com.hk

WARNING - AUSTRALIAN USERS

This FAX/Modem has been tested with Bitcom, Bitware for windows and fully complies with AUSTEL Technical Standards if the following conditions are followed :

1 THE NUNMBER OF RE-DIALMUST NOT BE SET TO GREATER THAN 3

2.THE MODEM MUST NOT BE CONFIGURED TO THE BELL MODE OF OPERATION

Software packages other than the above, or any other configurations defined by the user, were not tested and may result in the modem being operated in a non-compliantmanner.

CONSEQUENTLY, THERE WOULD BE NO PERMIT IN FORCE FOR THIS EQUIPMENT, AND THE TELECOMMUNICATIONS ACT 1991 PRESCRIBES A PENALTY OF $12,000 FOR CONNECTION OF NON-PERMITTEDEQUIPMENT.

For external modem, users must only use an ACTIVE AC Adaptor, Model

No . : 4824-1485-3AC.(Approval No. : N12430)

WARNING - SWEDISH USERS

After the country code or the digit 0 from a PBX, users must use a W to indicate dial tone detection. It is not allowed to use pause (comma) instead of dial tone detection (W).

TABLE OF CONTENTS

CHAPTER 1.

INTRODUCTION

1

CHAPTER 2.

INSTALLATION

2

CHAPTER 3.

LEASED LINE OPERATION

9

APPENDIX A.

AT COMMANDS

11

APPENDIX B.

RESULT CODES

24

APPENDIX C.

S REGISTERS

26

APPENDIX D.

CABLE PINS ASSIGNMENT

36

APPENDIX E.

SPECIFICATIONS

37

APPENDIX F.

APPLICATION EXAMPLES

39

APPENDIX G.

LED CONFIGURATION CHART FOR LEASED LINE

40

CHAPTER 1. INTRODUCTION

CHAPTER 1. INTRODUCTION

OVERVIEW

Congratulations on your purchase of ACTIVE Professional External Modem. The modem equips with V.42/MNP2-4error control, V.42bis/MNP5 data compression as well as 14400bps facsimile functions. It incorporates the latest in advanced communications technology providing maximum functionality and 100% data transfer accuracy at the highest data transfer speed.

Active External modem is compatible with many terminal servers and multiport serial adapters available world wide, such as Cisco 2500 series, Computone, Chase Research, Perle Specialix, Nortel Bay Networks, Lantronix, 3 Com, Moxa, Digi Board, Systech, Gts, Huawei , etc.

This guide describes the following models :

n560UF/D :External dial up modem

n560UF/L: External leased-linemodem

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CHAPTER 2. INSTALLATION

CHAPTER 2. INSTALLATION

Carefully unpack the product package that you have received and check the contents as following:

nThe modem equipment

nTelephone cable

n5V DC power adapter & power cable

nModem cable: 9 pins male to 9/25 pins female

nDigital User’s Manual (Download from www.quantum.com.hk)

The Rear View: 560UF/L & 560UF/D External Modem

Line Jack

Only use the middle 2 pins (Pin 2 & Pin 3) to connect to the “Line” jack of the modem.

SERIAL PORT

For pin assignment, please refer to Appendix D

Install your external modem

1.Power off the computer or terminal and the modem.

2.Modem cable: Connect the9-pinsmale modem cable to the “Serial Port” of the modem. Tighten the screws.

Connect the other end of the modem cable ( 9-pins&25-pinsfemale)

to the serial port of your Computer or terminal. Tighten the screws.

3.Telephone Line cable: Connect one end the phone cable to the “Line” jack of the modem and the other end to the telephone line or leasedline jack..

4.Power Adapter: Connect the 5VDC power adapter jack to the “5V DC” port of the modem. The other end of the power cable to the 110/220 power socket.

5.Power on the computer or terminal and the modem. Configure the modem by issuing the appropriate AT commands or using the front panel switches.

6.The modem is ready for operation.

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CHAPTER 2. INSTALLATION

THE FRONT PANEL: 560UF/L & 560UF/D External Modem

The front panel consists of seven light indicators, a 7 segment LED and five switch buttons which are explained as follows:

Seven light indicators:

MR (Modem Ready): This light indicates the modem is ready for AT command.

TR (Terminal Ready): This light is ON when the terminal or PC (Data Terminal Equipment) is ready to send or receive data, i.e. when the Data Terminal Ready signal is ON.

CD (Carrier Detect): The Carrier Detect light is ON when a connection is made with another modem, or when the AT&C0 command is issued.

TD (Transmit Data): This indicator is ON and flashing when the terminal transmits data to the modem.

RD (Receive Data): This indicator is ON and flashing when the terminal receives data from the modem.

AA (Automatic-answer):Lights up when the modem has been set toautomatic-answermode. Also flashes when the modem has detected incoming rings.

OH (Off Hook): Lights up when the modem uses the telephone line (in the data mode). The OH indicator goes out when the modem hangs up the phone line or when it is in the Talk mode.

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CHAPTER 2. INSTALLATION

A 7-segmentLED (optional)

Monitor the line speed. The speed may fall down or step up depending on the telephone line quality.

9

-

33600 bps

8

-

31200 bps

7

-

28800 bps

6

-

26400 bps

5

-

24000 bps

4

-

21600 bps

3

-

19200 bps

2

-

16800 bps

1

-

14400 bps

0

-

12000 bps

A

-

9600 bps

C

-

7200 bps

E- 4800 bps

F- 2400 bps

H

-

1200 bps

L

-

600 bps

P

-

300 bps

F.

-

fax mode

Five switch buttons: 1. Normal / Config.

Select between Normal andConfiguration mode. ‘POP’ position is the Normal mode, ‘PUSH’ position is the Config. mode. In Config. mode, the modem can be configured through the front panel switches. After configuration, the modem must be set back to Normal mode.

2. Menu (menu 0 – menu C)

a. If the modem is in Config. mode, this switch acts as a menu pointer. Toggle this switch causes the modem to increase the pointer by 1. (please refer to the section ‘modem configuration table’).

b. If the modem is in Normal mode, this switch has no function.

3. T/D(Talk/Data) or Function (Function)

Operation of this switch depends on the Normal / Config. and theMenu switches.

If the modem is in Config. mode, this switch acts as aFunction pointer. (please refer to the section ‘modem configuration table).

4. O/A (Originate/Answer) or En (Enable)

The operation of this switch depends on the Normal / Config. switch.

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CHAPTER 2. INSTALLATION

a.If the modem is in Normal mode, it acts as aO/A switch. Toggle this switch causes the modem to change from Originate mode to Answer mode and the LED segment displays ‘A.’ for answer mode, or ’O.‘ for Originate mode.

b.If the modem is in Config. mode, it acts as anEnable switch. Toggle this switch causes the modem to execute the selected features and LED segment shows 'U'. The features (except menu 7) were saved to NVM profile 0 automatically (please refer to the section ‘modem configuration').

5.Reset switch

Press to reset the modem during unexpected software hung-up.

Use T/D Switch to dial

1.Store a 36-digitdial string in the specified entry (n=1-3)for later dialing (AT&Zn=<T or P><tel. no> ,n=1-3,i.e AT&Z1=T123456 for tone dial, AT&Z1=P123456 for pulse dial).

2.Set Normal / Config. Switch to PUSH position for configuration mode.

3.Toggle the Menu Switch to the desired Menu 7.

4.Toggle the FunctionSwitch to the desired Function(n=1-3).

5.Press the En Switch to execute the selected features. The character ‘U’ is shown on the LED segment.

6.Set Normal / Config. Switch to POP position.

7.Press the T/D Switch to dial the specific entry (Dial number previously stored in directory location n using AT&Zn).

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CHAPTER 2. INSTALLATION

Modem Configuration Table (Further reference: Appendix G) Menu(0-C,set byMenu switch)

0 Factory default - &F

function (set by switch) (0)Auto,(1)MNP,(2)Direct Mode.

1Asyn - &Q function

(0)Asyn

2Type of line - &L function

(0)Dial up, (1) 2 wire LL

3Modulation - +MS function

(0)auto (1) bell103, (2) V.21, (3) V.22/bell212, (4) V.22bis

(5)V.23, (6) V.32/V.32bis, (7) V.34/V.34+

4DTE speed

function

(0)get from profile 0, (1) 115200, (2) 57600, (3) 38400, (4) 19200,

(5)14400, (6) 9600, (7) 4800, (8) 2400, (9) 1200, (A) 300

5 TX level - S91 function

(0) –10,(1) – 2, (2) – 4,(3)-6,(4)–8,(5) – 9,(6)-11,(7)-12,(8)-13,

(9)-14

6Rx level - %R function

(0)-43,(1)–33

7Dial stored Tel. No. (please refer to the section ‘Use T/D Switch to dial’.) function

(0)Normal

(1)Dial tel. no(stored by AT&Z1)

(2)Dial tel. no(stored by AT&Z2)

(3)Dial tel. no (stored by AT&Z3)

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CHAPTER 2. INSTALLATION

8Smart/Dumb mode - &A function

(0)smart, (1) dumb

9Compression control - %C function

(0)Enables both MNP5 and V.42bis data compression

(1)Disables data compression

(2)Enables MNP5 data compression

(3)Enables V.42bis data compression

A DTE/DCE Flow control - &K function

(0)Enables RTS/CTS flow control

(1)Disable flow control

(2)Enables XON/XOFF flow control

(3)Enables transparent XON/XOFF flow control

(4)Enables both RTS/CTS and XON/OFF flow control (default for fax mode)

C Save to NVM memory - &W function

(0) profile 0, (1) profile 1

Modem Configuration through front panel (also refer to modem configuration table)

To configure your modem through modem front panel switches, please follow the procedures below:

1.After the installation as described in section ‘Install your modem’,

2.Set Normal / Config. Switch to PUSH position for configuration mode.

3.Toggle the Menu Switch to the desired Menu (0 to C). The state is shown on the LED segment.

4.Toggle the Function Switch to the desired Function. The state is shown on the LED segment.

5.Press the Enable Switch to update the selected features. The character‘U’ is shown on the LED segment. (The updated features were saved to NVM memory profile 0 automatically except menu 7).

6.To finish configuration by setting the Normal / Config. Switch to POP position.

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CHAPTER 2. INSTALLATION

Example to set up DTE speed 57600 bps and modulation V.22 bis,

1.Set Normal / Config. Switch to PUSH position for Config. mode.

2.Set desired DTE speed 57600 bps Method:

Toggle the Menu Switch to Menu 4 (DTE speed menu), the digit ‘4’ is shown on the LED segment. Then toggle theFunction Switch to Function 2 (speed 57600 bps is selected), the digit ‘2’ is shown on the LED segment. Then press theEnable Switch to update the DTE speed, The character ‘U’ is shown on the LED segment and all parameters will be saved to profile 0 automatically.

3.Set modulation V.22 bis Method:

Toggle the Menu Switch to Menu 3 (modulation menu), the digit ‘3’ is shown on the LED segment. Then toggle theFunction Switch to Function 4 (V.22 bis is selected), the digit ‘4’ is shown on the LED segment. Then press theEnable Switch to update the modulation setting, the character ‘U’ is shown on the LED segment and all parameters will be saved to profile 0 automatically.

4.If more settings are required (i.e tx level, flow control, etc), repeat the above steps. The above features were saved to profile 0 automatically).

5.To finish configuration by setting the Normal / Config. Switch to POP position.

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CHAPTER 3. LEASED LINE OPERATION

CHAPTER 3. LEASED LINE OPERATION

This chapter tells you how to establish a leased line connection in asynchronous and synchronous modes.

What is Leased Line Operation?

In leased line operation, two modems are directly wired together by a dedicated telephone line. The register S7 does not pose a time limit on making a data connection. One modem must be set to originate mode and the other must be set to answer mode. ACTIVE modem is designed to be used with a 2-wire /4-wire(optional)leased line

The RS-232CDTR signal must be ON to maintain the leased line data connection. If the modem detects a DTR drop during data connection, the carrier will be dropped. Once the DTR signal is restored to ON, the modem willre-startto establish data connection. The user can use the AT&D0 command to cancel the effect of DTR status on this operation. In this case, the modem will perform this operation disregard of the DTR status.

Asynchronous Power-onLeased Line (POLL) Operation

When the modem is set to POLL mode, the carrier is transmitted immediately upon powered up. The modem will wait for the remote carrier eternally until data connection is established. If the modem detects a loss of carrier during data connection, it will send the carrier for a re-connectionautomatically.

The following is an example to establish a Power-on2-wireleased line (POLL) operation, Please follow the instructions below:

1.Make proper wiring connection.

2.Prepare two modems. One modem set to Answer mode, another one set to Originate mode.

Method:

Set Normal / Config. Switch to POP position for Normal mode. Toggle theO/Aswitch to Answer mode or Originate mode. The LED segment displays ‘A.’ for Answer mode, or ‘O.’ for Originate mode.

3.Set desired DTE speed, protocol, transmission mode, flow control, etc. Method:

Set Normal / Config. Switch to PUSH position for Config mode.

DTE speed: For example, if 57600 bps DTE speed is required, toggle the Menu Switch to Menu 4 (DTE speed menu), the digit ‘4’ is shown on the LED segment. Then toggle theFunction Switch to Function 2 (speed 57600 bps is selected), the digit‘2’ is shown on the LED segment.

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CHAPTER 3. LEASED LINE OPERATION

Then press the Enable Switch to update the DTE speed, The character ‘U’ is shown on the LED segment.

If more setting are required (i.e transmission mode, flow control, etc), repeat the above procedures.

4.Enable the POLL after all parameters are set. Method:

Set Normal / Config. Switch to PUSH position for Config mode.

Toggle the Menu Switch to Menu 2 (type of line menu), the digit‘2’ is shown on the LED segment.

Then toggle the Function Switch to Function 1 (2 wire LL is selected), the digit ‘1’ is shown on the LED segment.

Then press the Enable Switch to enable POLL, the character ‘U’ is shown on the LED segment and all parameters will be saved to profile 0 automatically.

5.To finish configuration by setting the Normal / Config. Switch to POP position.

You will hear the sound of modem handshaking procedure. The sound will be on until the data connection is made.

Procedure to exit the Power-OnLeased Line(POLL)

1.Set Normal / Config. Switch to PUSH position for configuration mode.

2.Toggle the T/D switch to break the handshake.

3.Toggle the Menu Switch to Menu 2 (type of line menu), the digit ‘2’ is shown on the LED segment.

4.Toggle the Function Switch to Function 0 (dial up line is selected), the digit ‘0’ is shown on the LED segment.

5.Press the Enable Switch to disable POLL, the character ‘U’ is shown on the LED segment and all parameters will be saved to profile 0 automatically.

AT COMMAND for Leased Line Configuration

 

 

AT%On *

Select answer/originate mode

Default :

1

 

%O0

Selects answer mode

 

 

 

%O1

Selects originate mode

 

 

AT&Ln *

Transmission line type

Default :

0

 

AT&L0

Dial-upline

 

 

 

AT&L1

2-wireLeased line (Option)

 

 

AT%Rn *

Select Receive sensitivity level

Default :

0

 

AT%R0

Select –43dBmreceive sensitivity level

 

 

 

AT%R1

Select –33dBmreceive sensitivity level

 

 

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APPENDIX A. AT COMMANDS

APPENDIX A. AT COMMANDS

The PC or terminal communicates with the modem through the use of the AT commands. Your communication software will act as an interface between you and your modem. You read this chapter to customise your configuration.

To issue these industry-standard"AT" commands, first load a communication software package and then enter Terminal or Interactive Mode (Refer to your communication software manual).

All command lines must begin with the ASCII letters "AT" and end with "<Enter>" except for the A/ command and escape characters (default +++), which will be discussed later. The letters "AT" are sometimes referred to as an attention code. This command indicates to the modem that one or more commands are to follow. The "AT" and all following alphabetic characters may be in upper or lower case.

AT must be entered in the same case such as "AT" or "at". "At" or "aT" are not permitted.

A series of commands can be grouped in a single line. The commands can be entered in a string with or without spaces for readability. Spaces within or between commands are ignored. The maximum number of characters in any command line is 39 (including “AT”). During the entry of a command, the backspace key can be used to correct errors with the exception of “AT”.

If a syntax error is found anywhere in a command line, the remainder of the line will be ignored and the ERROR result code will be returned. Most commands entered with parameters out of range will not be accepted and the ERROR result code will be returned.

This chapter lists all the commands used to configure the modem. It includes standard Hayes AT commands, Hayes V-seriescommands and extended commands to control ACTIVE modem.

DESCRIPTION OF AT COMMANDS

The symbol * means command setting may be stored in one of the two user profiles with the AT&Wn command.

A/ Re-executecommand

Re-executesthe most recent AT command string. The principle application of connect due to a busy line, no answer, or a wrong number. This command must appear alone in a command line and must be terminated by the “/” character. (A <Enter> should not be entered to end the command.)

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APPENDIX A. AT COMMANDS

 

 

 

 

 

 

 

+++

Escape Characters

Default : +

 

 

Switch the modem from Online State to Command State without

 

 

breaking the data connection. This character can be redefined by

 

 

changing the value in S Register S2.

 

 

 

AT=x

Write to Selected S Register

 

 

 

 

This command writes the value x to the currently selected S register. An

 

 

S register can be selected by using the ATSn command. All of the S-

 

 

register will return the OK response if x is a number.

 

 

 

AT?

Read Selected S Register

 

 

 

 

This command reads and displays the selected S register. An S register

 

 

can be selected by using the ATSn command.

 

 

 

ATA

Answer

 

 

 

 

 

This must be the last command entered into the command line. The

 

 

modem proceeds with the connect sequence in answer mode. The

 

 

modem will enter the connect state after exchanging carrier with the

 

 

remote modem. If no carrier is detected within a wait period specified in

 

 

register S7(default = 50 seconds), the modem will disconnect. Any

 

 

character may be entered via the DTE during the connect sequence to

 

 

abort the command.

 

 

 

ATBn *

Set ITU-Tor Bell mode

Default : 0

 

 

ATB0

Selects ITU-TV.22 and V.21 standards for communication at

 

 

 

1200 and 300bps

 

 

 

 

ATB1

Selects Bell 212A and 103 standards for communication at

 

 

 

1200 and 300bps

 

 

 

ATCn

Carrier control

Default : 1

 

 

This command is included for compatibility only, and has no effect

 

 

other than returning a result code.

 

 

 

 

ATC1

Normal transmit carrier switching

 

 

 

ATDn

Dial

 

 

 

 

 

This must be the last command in a command line. ATD causes the

 

 

modem to go off-hook,dial according to the parameters entered, and

 

 

attempt to establish a connection.

 

 

 

 

If there are no parameters, then the modem goes off-hookin originate

 

 

mode without dialling a number.

 

 

 

 

Punctuation may be used for clarity. Parentheses, hyphens and spaces

 

 

are ignored. If an invalid character is entered, that character and all

 

 

subsequent characters in the dial string are ignored. The modem

 

 

truncates dial strings to 36 characters.

 

 

 

 

Parameters: 0-9A B C D * # L P T R ! @W , ; ^ S=n

 

 

 

 

0-9

DTMF digits 0 to 9

 

 

 

 

 

 

 

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APPENDIX A. AT COMMANDS

A-DDTMF digits A ,B,C and D. These digits may be prohibited in some countries

*The "star" digit (tone dialling only)

#The "gate" digit (tone dialling only)

JPerform MNP 10 link negotiation at the highest supported speed for this call (Optional)

KEnable power level adjustment during MNP 10 link negotiation for this call (Optional)

LDials the last dial string that was dialled

P

Use pulse dialling

T

Use DTMF dialling

RReverse mode. Allow the modem to call an originate-onlymodem by forcing the call into "answer mode". Must be entered as the last character of the command string (optional).

!Cause the modem to go on-hookfor a time defined by the value in S29 and thenoff-hook.

@Cause the modem to listen for 5 seconds of silence

WWait up to the period of time specified in register S7 for dial tone before dialling

 

,

Pause for the value specified by register S8 during dial

 

 

;

Return to Command State after dialling

 

 

 

^

Turn on calling tone

 

 

 

()

Ignored, may be used to format the dial string

 

 

 

-

Ignored, may be used to format the dial string

 

 

 

<space>

Ignored, may be used to format the dial string

 

 

 

S=n

Dial number previously stored in directory location n using

 

 

AT&Zn command

 

 

ATE *

Command echo

Default :

1

 

ATE0

Inhibits the echoing of commands

 

 

 

ATE1

Enables the echoing of commands

 

 

ATHn

Switch-hookcontrol

Default :

0

 

ATH0

Cause the modem to go on-hook

 

 

 

ATH1

If modem is on-hook,modem goesoff-hook,returns an OK

 

 

response, and waits for further commands

 

 

ATIn

Identification

 

 

 

I0

Reports product code

 

 

 

I1

Reports pre-computedchecksum from ROM

 

 

 

I2

Computes checksum and compares it with value stored in

 

 

ROM. Reports result as OK or ERROR.

 

 

 

I3

Reports firmware revision

 

 

 

I4

Reports OEM defined identifier string

 

 

 

I5

Reports Country Code parameter

 

 

 

I6

Reports firmware revision

 

 

 

I7

Reports modem data pump model

 

 

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APPENDIX A. AT COMMANDS

ATLn *

Speaker volume

Default : 2

 

ATL0

Selects low speaker volume

 

 

ATL1

Selects low speaker volume

 

 

ATL2

Selects medium speaker volume

 

 

ATL3

Selects high speaker volume

 

ATMn *

Speaker control

Default : 1

 

ATM0

Speaker is always off

 

 

ATM1

Speaker is on during handshaking in call establishment but is

 

 

turned off while the modem is receiving a carrier signal from

 

 

a remote modem

 

 

ATM2

Speaker is always on

 

 

ATM3

Speaker goes off while the modem is receiving a carrier

 

 

signal from a remote modem and while the modem is dialling.

 

 

However, speaker is on during answering

 

ATNn *

Modulation handshake

Default : 1

 

ATN0

Requires the speed of the connection be that specified by the

 

 

value held in S37; if S37=0, the speed of the connection must

 

 

match that at which the last AT command was issued. If the

 

 

selected speed can be achieved using more than one

 

 

communication standard (e.g., Bell 212A or ITU-TV.22 at

 

 

1200bps), the modem also refers the selection made with the

 

 

ATB command

 

 

ATN1

Permits handshaking to occur at any speed supported by both

 

 

modems. Enables automode detection. The ATB command is

 

 

ignored in this mode and the modem attempts only ITU-T

 

 

mode connections.

 

ATOn

Return to the on-linestate

Default : 0

 

ATO0

Causes the modem to return to the data mode

 

 

ATO1

Causes the modem to return to the data mode and to initiate a

 

 

retrain

 

ATP *

Set pulse dial as default

 

ATQn *

Result code display

Default : 0

 

ATQ0

Allows the modem to send result codes to the DTE

 

ATQ1

Prohibits the modem from sending result codes to the DTE

ATSn

Establish S register n as the default register

 

ATSn?

Reading S registers

 

 

Reads the contents of the S register. All the S registers may be read.

ATSn=x

Writing to S registers

 

 

Writes the value of x to the specified S register n

 

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APPENDIX A. AT COMMANDS

ATT *

Set tone dial as default

 

 

ATVn *

Result code form (message control)

Default :

1

 

ATV0

Allows short form (numeric) result codes to be sent

 

 

ATV1

Allows long form (verbose) result codes to be sent

 

ATWn *

Negotiation progress reporting

Default :

0

 

ATW0

Error-correctioncall progress not reported

 

 

 

ATW1

Error-correctioncall progress reported

 

 

 

ATW2

Error-correctioncall progress not reported. CONNECT

 

 

XXXX message reports DCE speed.

 

 

ATXn *

Extended result codes

Default :

4

 

ATX0

Modem ignores dial tone and busy signal. Sends CONNECT

 

 

message when a connection is established by blind dialling

 

 

ATX1

Modem ignores dial tone and busy signal. Sends CONNECT

 

 

XXXX message reflecting bit rate when a connection is

 

 

established by blind dialling

 

 

 

ATX2

Modem ignores busy signal but waits for dial tone before

 

 

dialling. If dial tone is not detected within 5 seconds, the NO

 

 

DIAL TONE message is sent. Sends CONNECT XXXX

 

 

message reflecting bit rate when a connection is established.

 

ATX3

Modem ignores dial tone. Sends BUSY message if a busy

 

 

signal is detected. Sends CONNECT XXXX message

 

 

reflecting bit rate when a connection is established by blind

 

 

dialling.

 

 

 

ATX4

If dial tone is not detected within 5 seconds, sends NO DIAL

 

 

TONE message. If busy signal is detected, sends BUSY

 

 

message. Sends CONNECT XXXX message reflecting bit

 

 

rate when a connection is established.

 

 

ATYn *

Control long space disconnect

Default :

0

 

ATY0

Disables long space disconnect

 

 

 

ATY1

Enables long space disconnect

 

 

ATZn

Reset

 

Default :

0

 

Restore the active configuration with the user profile

 

 

 

ATZ0

Soft reset and restore stored profile 0

 

 

 

ATZ1

Soft reset and restore stored profile 1

 

 

AT&An * Handshake Abort Option

Default : 1

 

AT&A0

Disables the user abort during handshaking. Once the

 

 

dialling string is entered or answer is initiated, the

 

 

handshaking cannot be aborted. Only dropping DTR signal

 

 

(except &D0 option) and pressing T/D switch can abort the

 

 

operation.

 

 

 

AT&A1

Enables the user abort during handshaking. Anytime during

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&Q0
&Q1
&Q2
&Q3
&Q4
&Q5
&Q6
&D3
4
4
3
3
4
4
4
&D2
3
3
3
3
3
3
3
&D1
2
2
3
3
2
2
2

APPENDIX A. AT COMMANDS

a handshaking sequence, the call and answer can be aborted

 

 

by receiving any character from DTE.

 

AT&Cn *

RS232-CDCD option

Default : 1

 

AT&C0

DCD is ON regardless of the state of the data carrier from the

 

 

remote modem

 

 

AT&C1

DCD follows the state of the data carrier from the remote

 

 

modem

 

AT&Dn *

RS232-CDTR option

Default : 2

Determines actions taken by the modem in relation to the DTR signal of the serial port.

The action for the event hat follows DTR drop indicated in the following table:

&D0 NONE 1 3 3 1

NONE

NONE

1Modem disconnects and sends OK result code

2Modem goes into command mode if ni data mode and sends the OK result code

3Modem disconnects, sends the OK result code, and disables auto answer while DTR is off

4Modem performs a warm start (i.e., same as ATZ command)

AT&Fn

Restore factory configuration

Default : 0

 

&F0

Recalls fa ctory default as V.42bis auto-reliablemode

 

&F1

Recalls factory default as MNP 5 auto-reliablemode

 

&F2

Recalls factory default as DIRECT mode

 

AT&Gn * Set guard tone

Default : 0

AT&G0

No guard tone

 

AT&G1

550 Hz guard tone

 

AT&G2

1800 Hz guard tone

 

AT&Jn * Telephone jack selection

Default : 0

This command is only included for compatibility and performs no function.

AT&J0

Performs no function

 

AT&J1

Performs no function

 

AT&Kn * DTE/modem flow control

Default : 3

AT&K0

Disables flow control

 

AT&K3

Enables RTS/CTS flow control

 

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