Creatix SR 2496 Manuel utilisateur

User manual

SR 2496

Dieses Dokument wurde erstellt mit FrameMaker 4.0.4.

CREATIX Polymedia GmbH, Saarbrücken 1994

This handbook is protected by copyright. It must not

be copied, reproduced, translated or transmitted in

electronic media, in whole or in part.

Accuracy of the information is not guaranteed.

Any mention in this handbook of products made by

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and represents no misuse of trademarks.

Creatix Polymedia GmbH

Fasanerieweg 15

66121 Saarbrücken

<mv205a0.121engl>

Table of Contents

CHAPTER 1 INTRODUCTION................1

Installation Instructions...........................................1

CHAPTER 2 SETTING UP

CONNECTIONS..................2

The Modem as an Automatic Dialling Unit..............2

Typical Examples of Operating Modes...................2

CHAPTER 3 STANDARD

AT COMMANDS ................3

Examples of Command Syntax ..............................3

AT - Attention-Code.................................................3

Detailed Command Descriptions ........................4

A – Answer Mode....................................................4

A/ – Repeat last Command line..............................5

B – BELL/CCITT Standard......................................5

D – Automatic Dialling and Dialling Parameters .....5

E – Echo Function ..................................................5

I – Product Information ...........................................6

O – Return to On-Line Operation............................6

Q – Modem Messages ON/OFF.............................6

Sr=n – Modify Register Values ...............................6

Sr? – Read Register Values ...................................6

V – Verbal or Numeric Modem Messages..............6

X – Extended Connection Messages -

Setting up connections.................................6

Y – Long Space Disconnect ...................................7

Z – Reset/Loading a Stored Proﬁle.........................7

The +++ – Esc Sequence.......................................7

&C – Control Line M5 (DCD) ..................................7

&F – Loading Factory Settings................................7

&G – Guard Tone....................................................8

&M – Asynchronous Dialling/Synchronous

Data Transmission........................................8

&R – Control Lines S2 and M2 ...............................8

&S – Control Line M1 (107/DSR)............................8

&T – Modem Test Functions ...................................9

&V – Displaying Active Conﬁguration......................9

&W – Storing a Set Proﬁle......................................9

&X – Setting the Clock Signal in

Synchronous Operation..............................10

&Y – Selecting a Start Conﬁguration ....................10

&Z – Telephone Number Storage .........................10

CHAPTER 4 MNPAND

V.42 COMMANDS............11

\A – Maximum MNP Block Size ............................11

\B – Sending a Break Signal.................................11

\C – MNP Buffer....................................................11

D/ – Dialling a Stored Telephone Number.............12

DL – Redial ...........................................................12

\E – Data Echo during a Normal Connection........12

\F – Displaying Stored Telephone Numbers .........12

\G – Flow Check (XON/XOFF)..............................12

\J – Baud Rate Adjustment ...................................12

\K – Type of Break Control....................................13

\N – Data Transmission Mode...............................13

\O – Setting Up an MNP Connection during

On-Line Operation......................................14

\P – Storing a Telephone Number.........................14

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\Q – Serial Flow Check.........................................14

\S – Displaying Current Modem Conﬁguration .....15

\T – Inactivity Timer...............................................15

\U – Accepting an MNP Connection .....................15

\V – MNP Switching Messages.............................16

\X – Onward Transmission of an

XON/XOFF Signal......................................16

\Y – Switching to Reliable Mode...........................16

\Z – Switching to Normal Mode.............................16

%A – Fallback Character ......................................16

%C – Authorise Data Compression ......................17

%E – Authorise Automatic Retrain........................17

%R – Displaying Recorded Values.......................17

%V – Displaying Firmware Version.......................17

V.42 Commands..................................................17

W – Authorising V.42 Modem Messages..............17

&K – Determining Flow Check..............................17

&Q – Using the V.42bis Standard.........................18

CHAPTER 5 S-REGISTERS...................19

Standard S Registers .........................................20

SO – Ring Character before Modem engages .....20

S1 – Ring Character Counter ...............................20

S2 – Character for Esc Sequence........................20

S3 – Character for Carriage Return......................20

S4 – Character for Line Feed ...............................20

S5 – Character for Backspace..............................20

S6 – Waiting Time for Dialling Tone......................20

S7 – Waiting for the Carrier Signal .......................21

S8 – Pause Time using Comma...........................21

S10 – Line Break on Carrier Loss.........................21

S11 – Dialling Speed.............................................21

S12 – Guard Time for the Esc Sequence .............21

S14 – Bit-Map Options..........................................22

S16 – Bit-Map Options..........................................22

S18 – Setting Maximum Test Time .......................22

S21 – Bit-Map Options..........................................22

S22 – Bit-Map Options..........................................23

S23 – Bit-Map Options..........................................23

S25 – DTR Delay Time.........................................23

S26 – Delay from RTS to CTS..............................23

S27 – Bit-Map Options..........................................24

MNP Registers.....................................................24

S36 – Bit-Map Options..........................................24

S37 – Fallback Characters in Autoreliable Mode..24

S38 – Bit-Map Options..........................................25

S39 – Bit-Map Options..........................................25

V.42 Registers .....................................................25

S36 – Controlling the Setting up of Connections..25

S82 – Handling the Break Signal..........................25

CHAPTER 6 MODEM

MESSAGES.......................26

CHAPTER 7 TROUBLE-

SHOOTING .......................28

CHAPTER 1 INTRODUCTION

In choosing the SR 2496 Modem, you have selected a ver-

satile unit which is equally suitable for data communication

and fax transmission. It has the following features:

•Transmission systems to CCITT V.21,

V.22/V.22bis

•Automatic Selection and Programming via Hayes

Command Set

•MNP 1-4, V.42 Error Correction

•

MNP 5, V.42bis Data Compression

•

Effective Transmission Rate of max. 9600 bps

(V.22bis with V.42bis)

•

Tone and Pulse Dialling

•

Automatic Answering

•

Number Storage for four Telephone Numbers

•

Two Conﬁguration Memories

•

LED Indicators for Power, Online and Carrier

•

Fax Transmission is compatible with Fax Group 3;

V.27ter (Send up to 9600 bps, Receive up to 4800

bps);

•

Fax-Software Interface: Class 2

Installation Instructions

Using the interface cable supplied, connect the

modem to a free COM interface on the computer

(25-pole or 9-pole with pins; if necessary, the adap-

tor may be used).

Use the telephone cable supplied to link the

modem to a telephone jack.

The power supply to the modem is via the connec-

tor unit supplied, which should be plugged into a

mains socket 220-240 V AC.

When the “Power” LED is illuminated, the modem

is ready for data communication with the values

which were pre-set by the manufacturer.

Conﬁgure the modem with the communications or

fax software to suit your requirements.

➮

Ensure that the correct COM interface is allocated in

the software.

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CHAPTER 2 SETTING UP CONNECTIONS

CHAPTER 2 SETTING UP

CONNECTIONS

There are various methods which you can use to set up a

data connection with a remote modem. These are descri-

bed below.

Answering

Manual: You answer the call by lifting the

telephone connected to the line and then enter ATA* to per-

mit the modem to take over the line.

Automatic:Here, the SO Register (or the comms. software)

must be set to determine how many times the telephone will

ring before the modem comes on line when a call is made.

Calling :

Manual

: You dial the number on the telephone connected to

the line and enter ATD (without parameters) when the other

party is ready to receive a data transmission.

Automatic

: In automatic mode, you can use the following

commands to cause the modem to dial the number required

ATD with dialling parameter D/- (DS) to dial a stored number

DL-command, to re-dial the last number you called. You will

ﬁnd more information in the descriptions of the individual

commands.

The Modem as an Automatic Dialling Unit

If the dialling command ends with a semi-colon (for example

ATDP0681 12345;) the modem will dial the number and then

transfer the telephone line to the telephone. (*A detailed de-

scription of the individual commands is provided in Chapters

3 and 4)

Typical Examples of Operating Modes

Automatic Dialling with AT Commands

Enter ATD “Dialling Sequence”, where “Dialling Sequence”

is the telephone number with all the necessary parameters

eg. ATDP O , 0681 123456

Zero (0) is dialled from a private automatic branch exchange

with pulse dialling (p) to get a line, then a dialling pause (,) of

two seconds, followed by the telephone number 0681

123456

Storing a Telephone Number

Enter AT&Zn=“Dialling Sequence”, where “Dialling Se-

quence” is (as described above) the telephone number with

all its dialling parameters and n is the position in the memory

assigned for the telephone number.

eg. AT&Z1=P 0 , 0681

123456 So the dialling sequence P O , 0681 123456 will be

entered into memory 1.

Dialling a stored Number

Enter ATDSn, where n is the memory of the required num-

ber.

Redialling

Enter ATDL to redial the last number you called.

➮

The Online LED lights when the data connection is

made. The Carrier LED lights when the carrier tone of

the other party is recognised.

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CHAPTER 3 STANDARD AT COMMANDS

CHAPTER 3 STANDARD AT

COMMANDS

The modem can be programmed with so-called AT com-

mands from the data terminal equipment (computer, PC or

terminal) and be given instructions for automatic dialling.

Generally speaking, these procedures will be covered by the

communication software or fax software, so you will not nor-

mally be required to know all the details of the commands

described below.

The modem must be in Command mode in order to re-

ceive commands. In this mode, all the characters sent by

the computer will be interpreted as commands and, where

appropriate, conﬁrmed on the screen by a modem message.

Where a connection is established with a remote modem,

the modem will switch to data mode and transmit all the cha-

racters it receives, on to the other party.

The Esc sequence (+++) can be used to switch the mo-

dem from an existing connection to the command mode, wi-

thout breaking off the connection to the remote modem. In

this condition, any commands which are entered are not

transmitted on to the other party.

The modem is activated by AT commands, the value of

which will modify the type of the command. So-called mo-

dem messages give information on the type of the com-

mands.

Commands are introduced via the Hayes Command Set

by the AT (at) character sequence and can also be entered

as a list of commands, with or without spaces between the

individual commands. The backspace key is used for dele-

tion purposes. Commands may be issued in upper or lower

case letters. When the modem is in the command mode it

will automatically recognize data frameworks and data

speeds.

➮AT commands can be transmitted to the modem with the

following data rates: 9600, 4800, 2400, 1200, 600 and

300 bps.

Examples of Command Syntax

ATX1<CR>

ATQO<CR>

ATDP12345<CR>

These individual commands, which all end with the enter

key <CR> can also be entered with any number of spaces

between the various symbols, for ease of recognition. The

effectiveness of the commands is not affected by the spa-

ces.

ATX1QODP12345<CR> or

AT X1 QO DP 12345<CR>

AT - Attention-Code

The AT- (Attention) Code which introduces each command

line (except A/-command and the Esc sequence) can be en-

tered in upper or lower case lettering. However, it cannot be

deleted by using the backspace key.

➮The AT code enables the modem to recognize the speed,

parity and character length of the communication pro-

gramme.

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CHAPTER 3 STANDARD AT COMMANDS

A number of different commands can be included in one

line, separated by spaces. The command line must end with

the ASCII character in the S3 or S4 Register (or both of

them together). The standard value for S3 is carriage return

(<CR>=13 decimal) and for S4 is line feed (<LF>=10 deci-

mal).

A command line without <CR>, <LF> will remain in the

command buffer until a <CR>, <LF> is entered, or until it is

broken off with <Cntrl-X>. Once <CR>, <LF> is received, the

modem will carry out the commands following the AT and

will answer with an appropriate modem message.

The maximum length of a command line is 40 characters.

If the capacity of the command buffer is exceeded, the mo-

dem will issue a fault message.

Table 1 Standard AT Commands

ATA Answer Mode: Modem uses telephone line

A/ Repeat last command line; entered without “AT”

ATB Switch between Bell and CCITT Standards at 300 and 1200 bps

ATDn Select telephone number “n”

ATE Control modem command echoes on screen

ATI Information about modem product code

ATO Return to on-line operation (Data mode) after entering Esc sequence

ATQ Control modem messages

ATSr? Read Register “r” and issue value

ATSr=n Write value “n” in Register “r”

ATV Format modem messages

ATX Modem function when dialling

ATY Line break when a space signal is received

ATZ Modem reset and load one of the stored modem proﬁles

+++ Escape sequence for temporary return to command mode

AT&C Control M5-(DCD) signal at serial interface

Detailed Command Descriptions

A – Answer Mode

This command is used for manually setting up a connection

via a telephone connected to the same line. When the “A”

command is entered, the modem switches into the tele-

phone line when the telephone receiver is lifted. In this con-

dition, it transmits in “Answer” mode (Upper channel “oK”). If

further characters are entered after the “A” command and

before a connection is made, the modem will interrupt the

connection set-up and go into the Command mode. It is-

sues the message “NO CARRIER”.

If no carrier is received by the other party after the waiting

time set in the “S7” register, the modem will answer with

“NO CARRIER” and return to the command mode. If the mo-

dem receives the carrier, it will give a “CONNECT” message

and switch into Data mode.

AT&F Loading a factory setting

AT&G Controlling a guard tone

AT&M Synchronous data transmission after asynchronous dialling

AT&Q Synchronous data transmission after asynchronous dialling

AT&R Controlling M2 and S2 signal at serial interface

AT&S Controlling M1(DSR) signal at serial interface

AT&T Modem test functions

AT&V Display of stored modem proﬁles and telephone numbers

AT&W Storing modem settings

AT&X Controlling Clock signal in synchronous operation

AT&Y Selecting conﬁguration which will be effective after modem start-up

AT&Zn=x Filing telephone number “x” in memory position “n”

CHAPTER 3 STANDARD AT COMMANDS

A/ – Repeat last Command line

The A/ command causes the modem to repeat the com-

mand line which is stored in the command buffer. This com-

mand is entered without AT and no return answer is issued.

A command line which has been entered remains until the

modem receives a new AT command.

B – BELL/CCITT Standard

The B command allows change-overs between the CCITT

Standard and Bell Standard with connections having a data

rate of 300 bps or 1200 bps.

ATB0: V.21 (300 bps); V.22/V.22bis (1200 bps) (Factory set-

ting)

ATB1: Bell 103 (300 bps); Bell 212A (1200 bps)

➮

The “B” command applies only to 300, 1200 and

1200/75 bps connections.

D – Automatic Dialling and Dialling Parameters

The D command engages the automatic dialling function.

The parameters for this command cover ﬁgures 0 to 9, let-

ters P, T, W and the tone dial characters A to D, * and #.

Punctuation marks not listed here can be added, to make

the command easier to identify; this has no affect on the

command itself. The dialling parameters are described be-

low:

P, T These parameters switch between “Pulse” (P) and

“Tone” (T) in the Dialling command. For either of

these, the dialling process begins after the waiting

time set out in the “S6” register (the factory setting

is 2 seconds). Pulse dialling is the standard setting.

In the “Dial” command, it is possible to switch bet-

ween the two processes, if a mixed dialling pro-

cess is required in order to make the connection.

L The last number is dialled again

S=n Dials the number stored under AT&Z=n

W Wait for a further dialling tone

0 - 9 Numbers of the telephone number

A-D,*,# Additional characters for tone dialling

! Call the exchange by “Flash”

; After dialling, the modem returns to the command

mode. It does not make any data connection but

remains on-line, so that you can enter further com-

mands or lift the telephone receiver and take over

the line (modem as automatic dialling device).

, Waiting time 2 seconds.

➮

If the “D” command is entered without any parameters,

the modem will go on-line when the telephone receiver

is lifted in Originate mode.

E – Echo Function

The “E” command determines whether the modem will give

a local echo of the inputted commands when it is in com-

mand mode.

ATEO No command echoes to the computer

ATE1 Command echoes are issued (factory setting)

CHAPTER 3 STANDARD AT COMMANDS

I – Product Information

O – Return to On-Line Operation

The “O” command returns the modem to the On-line mode

which it had left temporarily via the Esc sequence.

ATO0 Return to On-line mode

ATO1 Return to On-line mode with Retrain

Q – Modem Messages ON/OFF

ATQ0 Modem messages are issued (factory setting)

ATQ1 No modem messages are issued. The S-register

values, identiﬁcation numbers, test sums and re-

sults of test loops with 'self-test' are, however, al-

ways issued.

Sr=n – Modify Register Values

This command is used to write the value “n” in the register

“r” (see Chapter relating to the S-Register).

Sr? – Read Register Values

This command enables the user to read the value of Regi-

ster “r” (see Chapter relating to the S-Register).

V – Verbal or Numeric Modem Messages

The V command determines the type of modem messages

to be sent back to the computer.

ATV0 Numeric modem messages

ATV1 Verbal modem messages (factory setting); infor-

mation covering error correction and data com-

pression is controlled via the \V command.

X – Extended Connection Messages - Setting up

connections

The X command determines which modem messages are

authorised. Messages 0 to 4 are basic and are issued with

every possible modem conﬁguration (see Chapter 7: Mo-

dem Messages).

ATX0 The modem issues only messages 0 to 4. When

dialling, the modem goes on-line, waits for the pe-

riod pre-set in the S6 register (the standard is 2

sec) and then dials, whether or not there is a dial-

ling tone. Once the connection has been made, a

CONNECT message is issued. If this is not achie-

ved in the time set in the S7 register (the standard

is 30 sec), a NO CARRIER message is issued. The

modem does not recognize a dialling or engaged

tone.

ATX1 Same as X0, however, the modem issues messa-

ges 0 to 5 and 10 (factory setting).

ATX2 The modem issues messages 0-6 and 10 and

awaits a dialling tone. If this is not recognized wi-

thin 5 seconds, it issues the message “NO DIAL-

TONE”. It does not recognize an engaged tone.

ATX3 The modem issues messages 0-5, 7 and 10. In

other respects it is the same as X0, except that the

engaged tone is recognized and signalled with the

message BUSY. After dialling, the modem awaits a

“free” tone within 30 seconds (standard in S7 regi-

ster) and then a carrier tone within the time preset

in the S7 register. If one of these conditions is not

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