Westermo IDW-90 AT User Manual

AT Commands 

Interface Guide

6620-3200

IDW-90

Westermo Teleindustri AB 

©

ISDN

Terminaladapter

www.westermo.com

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1. Introduction

The Westermo IDW-90 is an industrialised ISDN Terminal adapter. This Terminal adapter 
has been developed with high speed industrial data communications in mind and has 
some features you would not expect to find on normal adapters.
    The unit is DIN rail mounted and has both an RS-232/V.24 and RS-485 interfaces with  
2 or 4 wire connections.
    Terminal data rates of up to 115.2 kbit/s can be handled with a 128 kbit/s ISDN

B-channel bit rate

The IDW-90 has been designed to meet the European ISDN standard DSS1.  
All standard ISDN transport protocols are supported including HDLC transparent,  
X75, PPP and ML-PPP.  
    V.110 asynchronous is supported with flow control at data rates up to 19.2 kbit/s. 
A watchdog facility continually monitors the power supply and internal hardware as well 
as the operational software. In the event of a problem the modem automatically resets. 
This feature has been included to make the unit more suitable for use in unmanned  
locations.

The IDW-90 is available in an LV version 

The nominal input voltage is 12–48 VDC ±10%.

The IDW-90 has 1 Digital opto-coupled input that can be used to trigger services  
specified in a list of service entries. The IDW-90 also has a relay output with change  
over contact. The relay output can be controlled from a remote Westermo modem 
(PSTN, GSM and ISDN).

The IDW-90 features DIP-switch configuration and can be programmed using  
AT-commands or a Configurator which allows local and remote configuration and  
CAPI 2.0 compatibility. It also has an internal analogue V.34 modem enabling connections  
from ISDN to analogue modem end locations.

The IDW-90 documentation includes extensive information on the command set,  
S registers, DIP-switches and error codes. Please call your local Westermo office if  
you need further technical information.

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1.1 LED Indicators

LED  Function  Description

L1  ISDN Line status   LED normally showing the status of the ISDN S

L1 together with L2 is also used to indicate error conditions  
in the IDW-90 and the connection to the ISDN S0 interface.

L2  ISDN Data connection  LED Normally showing the state of the data connection

ANL  Analogue line   OFF = No analogue connection established 

BLINK = Analogue call in progress 
ON = Analogue line established

TD  Transmit Data   LED showing data from the DTE, the LED will blink when  

data received

RD  Receive Data   LED showing data transmitted to the DTE, the LED will blink 

when data transmitted

RTS  Request to Send   LED showing the status of the handshake line RTS from DTE, 

LED is ON when DTE requests to send data

DCD  Data Carrier Detect   LED showing the status of the handshake line DCD from  

IDW-90, The behaviour of the DCD-line is programmable,  
see configuration command cdcd

DTR  Data Terminal Ready  LED showing the status of the handshake line DTR

L1  L2  Status

ON  5 blink/s  Start up phase

ON  OFF  S0 connection OK

ON  1 short blink/s  Call setup in progress

ON  1 long blink/s   Waiting for B channel synchronization

ON  ON  Data connection is established

OFF  OFF  No power or Hardware error

0.5 sec ON  OFF  Faulty or no S0 connection 

0.5 sec OFF

OFF  2 blink/s  IDW-90 internal RAM error

OFF   0.5 sec ON  IDW-90 internal ROM error 

0.5 sec OFF

 interface.   

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2. DIP-Switch Setup

The IDW-90 DIP-switches will be read at Power on and override the current  
database setting.

If an AT-command or Configurator command given after Power on is addressing  
the same parameter as a DIP-switch setting, the command will in turn override  
the DIP-switch setting.

To store the current DIP-switch setting use the configurator command save or AT&W.

3. Factory settings

Throughout this manual the default factory settings of parameters are shown with bold 
typeface and labelled (default) where applicable.

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4.  AT-command set

All parameters can be changed by using an extended AT command set described  
in this chapter. 
Check to see whether the factory setting will fit your environment.  
The factory setting is described (highlighted) in the parameter list shown below.
If you want a different configuration from the factory default setting, take the following 
steps:

…   Connect the IDW-90 to ISDN interface.
…   Connect the PC’s COM port to the DTE interface of the IDW-90.
…   Connect the power supply to the mains socket.
…   Start a terminal emulation on your PC, and verify that the baudrate setting

of the terminal emulation fits that of the IDW-90.

…   Set up the parameters of the IDW-90 from the terminal emulation and save  

the parameters using the AT command set.

Example:

To change the used B channel protocol to X.75 please enter the following commands:
  AT**prot=10<CR>  (set protocol to X.75)
  AT&W<CR>  (save the new configuration)
  Leave your terminal emulation and start your application program.

With the exception of the command A/ (Repeat command) all commands begin with the 
prefix AT and AT!,-where the prefix-AT! is used to identify commands to the analogue 
modem. Commands are terminated with <CR>. Corrections in a command line are done 
with <BACKSPACE>. A command line has a maximum of 240 characters. The command 
line is automatically cancelled by longer input. Blanks are ignored, capital/small letters are 
not significant.

The parameter settings of the IDW-90 obtained when using the-AT commands can be 
permanently stored (AT&W) and are not lost by resetting or by leaving the-AT command 
mode.

To enter the AT command mode during an active data connection you must use  
the following sequence (“Escape sequence”):
  at least 1 sec pause  <+><+><+> 1 sec pause.
The time gap between all three plus signs may not exceed 1 sec. 
The escape sequence is transmitted transparently to the remote device.

Note:   If B channel protocol PPPasync (AT**prot=3) is selected, the escape sequence  

has to be included in an asynchronous HDLC frame. The coding of the complete 
asynchronous sequence is: 7E 2B 2B 2B 1B B4 7E.

AT-command  Description

A/   Repeat last command line 

A   Accept incoming call 

##An   Only analogue outgoing call

B    B channel protocol  

(no function use IDW-90+Configurator command PROT)

%B   Set local baudrate 

CONF   Enter IDW-90+Configurator 

&C   DCD control 

#C   Received bearer service 

#C1=hbhb   Select bearer service outgoing 

#C2=hbhbhbhb  Select bearer service incoming 

!%C   Enable/Disable Data Compression 

D   Initiate outgoing call 

&D   DTR control 

!+DS   Data Compression 

E   Local echo 1

!%E   Enable/Disable Line Quality Monitor and Auto Retrain or Fallback/Fall Forward

!+ES   Error Control 

&F  Load factory defaults ISDN

!&F   Load factory defaults analogue option

H   Disconnect

#H   Display msn

I   Display version information

!I   Display version information for analogue modem.

&K   Flow control

!K  MNP Extended Services

!%L   Report Line Signal Level

#M   Received CLID

!+MS   Modulation Selection 

N   Set line baudrate V.110 (no function use IDW-90+Configurator command BRN)

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AT-command  Description

!\N   Operating Mode

O   Return to online state

#O   Received CLIP

Q   Suppress result

!%Q   Report Line Signal Quality

&R   CTS control

#R   Handle incoming calls

S   Display and set internal S register

&S   DSR control

V   Result format

&V   Display configuration

!&V1   Display Last Connection Statistics

W   Enhance result messages

&W   Store active configuration

!&W   Store active configuration for analogue modem

X   Reduce result messages

Z   Load stored settings

&Z   Store call number

#Z   Define own msn

**<cmd>   Execute configuration command 

!#UD   Last Call Status Report

Windows2000 AT command set change:
ATNxxx   All commands ATNxxx will respond OK without any functionality

behind it. V.110 baudrates can be set with AT**BRN.

ATBxxx   All commands ATBxxx will respond OK without any functionality 

behind it.  
The B-channel protocol settings can be set with AT**PROT.

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A/ – Repeat last command line

This command repeats the commands of the last entered command line.
Note: No prefix AT is required.
  A/

##An – Only analogue outgoing call 

Forces the IDW-90 to make analogue calls even if no control character (’#’ or ’!’) 
is used in the dial string.
This also implies that no digital outgoing call can be made when AT##A1 is set. 
Digital incoming calls can still be received.

  AT##A0:   configures the adapter to be able to make both analogue  

and digital outgoing calls. (default)

  AT##A1:  configures the adapter only to make analogue outgoing calls.

A – Accept incoming call

Using this command you can accept an incoming call, if automatic call acceptance is  
not set (Register S0 = 0). An incoming call is displayed by the message “RING” or  
the code “2”.
Must be the last command in an AT command line.
ATA

B – B channel protocol

This command  will respond with OK without any functionality after it. The B-channel 
protocol settings can be set with AT**prot.

%B – Set local baudrate

Sets the local baudrate of the IDW-90 to the desired value (fixed value) or to auto­detection. When autodetection is set, the IDW-90 will recognize the desired baudrate 
with every newly entered AT command by the terminal equipment (PC). With all other 
settings the PC must use the same baudrate.
Must be the last command in an AT command line.
  AT%B0  Automatic local baudrate detection enabled (autobauding, default)
  AT%B1  Local baudrate set to 1 200 bit/s
  AT%B2  Local baudrate set to 2 400 bit/s
  AT%B3  Local baudrate set to 4 800 bit/s
  AT%B4  Local baudrate set to 9 600 bit/s
  AT%B5  Local baudrate set to 19 200 bit/s
  AT%B6  Local baudrate set to 38 400 bit/s
  AT%B7  Local baudrate set to 57 600 bit/s
  AT%B8  Local baudrate set to 115 200 bit/s
  AT%B9  Local baudrate set to 230400 bit/s

Note:   Autobauding (AT%B0) is available for AT command set only.  

If autobauding is selected and no AT-command has been sensed  
before an incoming call baudrate 9600 will be used.

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CONF – Enter IDW-90+Configurator

Enters directly into the IDW-90+Configurator, the configuration prompt “#”  
will be displayed. Leave the IDW-90+Configurator with the command “quit”.
  ATCONF
Note:   During the change between the command sets from "AT command set" to

"configuration command set" the serial status line DSR becomes inactive.

#C – Received bearer service

Shows the bearer service that is received with an incoming call in hexadecimal coding 
hbhb.
The value for hbhb (word) is the CIP value as defined in the CAPI 2.0 specification.
  AT#C

#C1=hbhb – Select bearer service outgoing

Selects the bearer service that will be sent with an outgoing call
The value for hbhb (word) is the CIP value as defined in the CAPI 2.0 specification 
(default 0002).
  Example: an outgoing call as a data call:-AT#C1=0002.
  Example: an outgoing call as a voice call:-AT#C1=0004.

#C2=hbhbhbhb – Select bearer service incoming

Selects the bearer services that can be accepted with an incoming call.  
The definition of hbhbhbhb (double word) is the CIP mask as defined in the  
CAPI 2.0 specification
(default 00010016).

  Example:   AT#C2=00010016: Accept analogue incoming calls 

AT#C2=00000001: Accept all incoming calls.

Note:  Before issuing an outgoing call the command AT#C1 has to be set. 

To use the predefined services please setup factory defaults (AT&F).

!%C – Enable/Disable Data Compression

Enables or disables data compression negotiation for connection to PSTN.  
The modem can only perform data compression on an error corrected link.
The parameter value, if valid, is written to S41 bits 0 and 1.

AT!%C<value>
  0  Disables data compression. Resets S46 bit 1.
  1  Enables MNP 5 data compression negotiation. Resets S46 bit 1.
  2  Enables V.42 bis data compression. Sets S46 bit 1.
  3   Enables both V.42 bis and MNP 5 data compression. Sets S46 bit 1.

(default)

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&C – DCD control

Selects the behaviour of the DCD control line from the IDW-90.
  AT&C0  IDW-90 control line DCD is always ON
  AT&C1   DCD ON indicates ISDN or PSTN connection is established

and synchronized (default)
  AT&C2  DCD follows DTR
  AT&C3  DCD indicates link level established (X.31-D only)

 D – Initiate outgoing call

Dials the number (D for Dial). The dial modifier “W", “>”, “T”, “;”, “@” can be freely 
inserted in the dial string; they have no influence on the dial procedure of the IDW-90.
Must be the last command in AT command line.
Any character input while the IDW-90 is dialling will cancel the dialling procedure exept 
when dabort=0.

ATD<CALLEDnumber>[/<subaddr>]
[,X[Pxxx-][R ][N<nuipwd> ][G<cug> ]<X25number>]]

  CALLEDnumber:   ISDN call number for a dialled B channel connection or X.25 

number for X.31 D channel
  Subaddr   dialled sub address
  P:   use packet size xxx for X.25 connection (value from 64 – 2048)
  R:   request the facility reverse charging
  G:   access to X.25 closed user group
  O:   Outgoing call from X.25 closed user group
  N:    use NUI and password with call setup allowed chars: a-z, A-Z, 0-9.

(Overrides setting of nui configuration command)
  X25number:   dialled X.25 call number (X.25 B channel only)
  ATDL  Dial the last dialled number
  ATDS=n     Dial number n from stored telephone number list (n = 1..3)

(See command AT&Z to store numbers)

AT!D<PSTNnumber> 
  ATD#<PSTNnumber>
  ATDT#<PSTNnumber>

  PSTNnumber:   Call number for a dialled connection to an analogue PSTN  

number over ISDN using the internal analogue modem
  AT!DL  Dial the last dialled number
  AT!DS=n   Dial number n from stored telephone number list (n = 1..3)

(See command AT&Z to store numbers) and catab n

Notes:  – To setup the own sub address see configuration command sub.

ATD<CALLEDnumber>e

Adding an “e” to CALLEDnumber indicates that a connection to the internal remote 
access of an IDW-90 shall be performed, the protocol X.75 (ATB10) has to be used. 
Remote configuration can also be accessed through sending the remote access escape 
sequence  ´++++’. See section 5.5

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Examples for X.25 and X.31 calls:

ATD12345678<cr>
  X.31:  dial X.25 number 12345678
  X.25-B:  dial ISDN call to 12345678 without a specific X.25 number

ATD12345678X4000123456<cr>
  X.31:  ISDN number 12345678 will be ignored if X.25 number is set
      dial X.25 number 4000123456
  X.25-B:  dial ISDN call to 12345678
      with X.25 number 4000123456

ATD12345678XP64,R,O02,Nnuivalue,4000123456<cr>
  X.25-B:  dial ISDN call to 12345678
      with packet size 64 byte
      with active reverse charging
      with outgoing call from closed user group "CUG" 02
      with NUI selection string "nuivalue"
      with X.25 number 4000123456

&D – DTR control

Selects the behaviour of the IDW-90, when the DTE control line DTR changes from  
ON to OFF.
  AT&D  DTE control line DTR setting is ignored
  AT&D2   DTR is evaluated: dropping the DTR line by the DTE will disconnect

an existing ISDN connection. An incoming call will accepted only 
with DTR active. (default)

  AT&D4   DTR is evaluated: Incoming calls will be accepted independent of 

DTR status; DTR drop disconnects an active connection

For nearer information see also chapter 4.3 Serial status lines. 

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!+DS – Data Compression

This extended-format compound parameter controls the V.42bis data compression func­tion if provided in the modem. It accepts four numeric sub parameters:

  AT!+DS=[<direction>[,<compr_neg>[,<max_dict>[,<max_string>]]]]

  <direction>   Specifies the desired direction(s) of operation of the data compres-

sion function; from the DTE point of view. 
0  Negotiated; no compression (V.42bis P0=0). 
3  both directions, accept any direction (V.42bis P0=11) (default)

  <compr_neg>   Specifies whether or not the modem should continue to operate if 

the desired result is not obtained.

    0   Do not disconnect if V.42bis is not negotiated by the remote 

modem as specified in <direction>
  <max_dict>   Specifies the maximum number of dictionary entries (2 048 entries)

which should be negotiated (may be used by the DTE to limit the 
codeword size transmitted, based on its knowledge of the nature of 
the data to be transmitted).

  <max_string>   Specifies the maximum string length (32 bytes) to be negotiated 

(V.42bis P2).

Reporting Current or Selected Values

Command:  AT!+DS?
  Response:  +DS: <direction>,<compr_neg>,<max_dict>,<max_string>

  Example:  +DS: 3,0,2048,32 for the defaults and 2048 entry max dictionary

Reporting Supported Range of Parameter Values

Command:  AT!+DS=?
  Response:   +DS: (<direction>range),(<compr_neg>range), (<max_

dict>range),(<max_string>range)

  Example:  +DS: (0,3),(0),(2048),(32)

E – Local echo

Selects the local echo in command mode.
  ATE0  No local echo
  ATE1  Local echo on in command phase (default)

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!%E – Enable/Disable Line Quality Monitor and Auto-Retrain  
or Fallback/Fall Forward

Controls whether or not the modem will automatically monitor the line quality and 
request a retrain (%E1) or fall back when line quality is insufficient or fall forward when 
line quality is sufficient (%E2). The parameter value, if valid, is written to S41 bits 2 and 6. 
If enabled, the modem attempts to retrain for a maximum of 30 seconds.

AT!%E0   Disable line quality monitor and auto-retrain.
  AT!%E1   Enable line quality monitor and auto-retrain.
  AT!%E2   Enable line quality monitor and fallback/fall forward. (default)

Fallback/Fall Forward. When %E2 is active, the modem monitors the line quality 
(EQM). When line quality is insufficient, the modem will initiate a rate renegotiation to a 
lower speed within the V.34/V.32 bis/V.32 modulation speeds. The modem will keep falling 
back within the current modulation if necessary until the speed reaches 2 400 bit/s (V.34) 
or 4 800 bit/s (V.32). Below this rate, the modem will only do retrains if EQM thresholds 
are exceeded. If the EQM is sufficient for at least one minute, the modem will initiate 
a rate renegotiation to a higher speed within the current modulation speeds. The rate 
renegotiations will be done without a retrain if a V.32 bis connection is established.
Speeds attempted during fallback/fall forward are those shown to be available in the rate 
sequences exchanged during the initial connection. Fallback/fall forward is available in 
error correction and normal modes, but not in direct mode.

!+ES – Error Control 

This command specifies the initial requested mode of operation when the modem is 
operating as the originator, optionally specifies the acceptable fallback mode of operation 
when the modem is operating as the originator, and optionally specifies the acceptable 
fallback mode of operation when the modem is operating as the answerer. It accepts 
three numeric sub parameters:

AT!+ES=[<orig_rqst>[,<orig_fbk>[,<ans_fbk>]]]

  <orig_rqst>   Decimal number which specifies the initial requested mode of opera-

tion when the modem is operating as the originator. The options are:
  0  Not supported.
  1   Initiate call with Normal Mode

(also referred to as Buffered Mode) only.
  2   Initiate V.42 without Detection Phase. If V.8 is in use, disable V.42

Detection Phase.
  3  Initiate V.42 with Detection Phase. (default)
  4  Initiate MNP.
  6  Not supported.
  7   Initiate Frame Tunnelling Mode when connection is complete, and

Data Mode is entered.

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  <orig_fbk>   Decimal number which specifies the acceptable fallback mode of  

operation when the modem is operating as the originator.
  0  LAPM, MNP, or Normal Mode error control optional. (default)
  1  Not supported.
  2   LAPM or MNP error control required; disconnect if error control

is not established. 
  3   LAPM error control required; disconnect if error control is not

established. 
  4   MNP error control required; disconnect if error control is not

established.
  <ans_fbk>   Decimal number which specifies the acceptable fallback mode of

operation when the modem is operating as the answerer or specifies 

V.80 Synchronous Access Mode.
  0  Not supported.
  1  Error control disabled, use Normal Mode.
  2  LAPM, MNP, or Normal Mode error control optional. (default)
  3  LAPM, MNP, or Direct Mode error control optional.
  4   LAPM or MNP error control required; disconnect if error control

is not established.
  5   LAPM error control required; disconnect if error control is not

established.
  6   MNP error control required; disconnect if error control is not

established.
  8  Not supported.
  9  Not supported.

Example:
  AT! +ES=3   Enable V.42 with Detection Phase originator.

Disable V.80 Synchronous Access Mode originator. 
  AT!+ES=,,2   Allow LAPM, MNP, or Normal Mode connection answerer.

Disable V.80 Synchronous Access Mode answerer.
  AT!+ES=3,,2  Enable V.42 with Detection Phase originator, allow LAPM, MNP,

or Normal Mode connection answer. 

Disable Synchronous Access Mode originator and answerer.

Reporting Current or Selected Values

Command:  AT!+ES?
  Response:  +ES: <orig_rqst>,<orig_fbk>,<ans_fbk>
  Example:  +ES: 3, 0, 2   For default settings.

Reporting Supported Range of Parameter Values

Command:  AT!+ES=?
  Response:  +ES: (<orig_rqst> range),(<orig_fbk>range),(<ans_fbk>range)
  Example:  +ES: (0-4, 6, 7), (0-4), (0-6, 8, 9)

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&F – Load factory defaults

Factory default will be loaded, ISDN protocol setting and msn’s will not be overwritten. 
(for storing in non volatile memory please use the command AT&W).
  AT&F0  Setup all parameters concerning data port
  AT&F1  Setup all parameters including ISDN protocol and msn settings.

!&F – Load factory defaults

Factory default will be loaded for the analogue option  
(for storing in non volatile memory please use the command AT!&W).
  AT!&F  The analogue modem loads the factory default configuration (profile)

H – Disconnect

Disconnects existing ISDN data connection, after issuing the Escape sequence (+++).
To enter the ATH command during an active data connection you must use the follow­ing sequence "<1 sec pause> <+><+><+> <1 sec pause>" to reach the online command 
mode.
The time gap between all three plus signs may not exceed 1 sec. 
The escape sequence is transmitted transparently to the remote device.

   The timeout after sending the "escape sequence" <+><+><+> will increase if the 

configuration parameter "txfwd" will rise. The default value of "txfwd" is set to "0".

I – Display version information

Displays different information about version number and settings:
  ATI0   Returns the “Modem”-type; name of the terminal adapter (“IDW-

90“)
  ATI1  Returns internal checksum (“??”)
  ATI2  Returns “OK”
  ATI3  Returns version string: “410045vv” vv = version number.
  ATI4  Returns manufacturers name: “Westermo Teleindustri AB”
  ATI5  Returns ISDN selected D-Channel protocol: “0 – DSS1”
  ATI6  Returns copyright string: “(c) Copyright Westermo Teleindustri AB”
  ATI7   Returns the status of the IDW-90 configuration switches.
    1  1  1  1
    “00000000.00000000.00000000.00000000”
    SW1  SW2  SW3  SW4
    ‘0’ = switch OFF and ‘1’ = switch ON.
  ATI9  Returns plug and play ID string
  ATI99  Returns software version creation date

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!I – Display version information for analogue modem

Displays various information about version number and settings for the analogue modem:
  AT!I0  Reports product code,
  AT!I1   Reports the least significant byte of the stored checksum in decimal

(see firmware release notes). Reports 255 if the prestored checksum 

value is FFh.
  AT!I2  Reports “OK”.
  AT!I3   Reports identification codes in the form RevisionName-Modulation

where:
      RevisionName =Product family, CX06833.
      Modulation = V34 or V32

Example:  CX068330-V34
  AT!I4  Reports OEM Manufacturer string e.g.: Westermo IDW-90
  AT!I5  Reports Country Code parameter, e.g., 42.
  AT!I6  Reports modem data pump model and internal code revision
  AT!I7  Reports OK.

&K – Flow control

Selects the flow control behaviour of the IDW-90 while in data communication phase.
  AT&K0  No local flow control between the DTE and IDW-90 is used
  AT&K3    Local flow control is set to hardware handshake RTS/CTS (default)
  AT&K4     Local flow control is set to software handshake XON/XOFF

!-K – MNP Extended Services

Enables or disables conversion of a V.42 LAPM connection to an MNP 10 connection.  
The parameter value, if valid, is written to S40 bits 0 and 1.
  AT!-K0  Disables V.42 LAPM to MNP 10 conversion. (default)
  AT!-K1  Enables V.42 LAPM to MNP 10 conversion.
  AT!-K2   Enables V.42 LAPM to MNP 10 conversion; inhibits MNP Extended

Services initiation during V.42 LAPM answer mode detection phase.

!%L – Report Line Signal Level

Returns a value which indicates the received signal level. The value returned is a direct 
indication of the receive level at the MDP, For example, 009 = –9 dBm, 043 = –43 dBm, 
and so on. This command is only valid in online command mode.

#M – Received CLID

Shows the called line identification (CLID) that is received with an incoming call – this is 
the number of the called party addressed on the local S-bus (selected msn).
  AT#M

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! +MS – Modulation Selection

This command parameter controls the manner of operation of the modulation capabili­ties in the modem. It accepts six sub parameters:
AT!+MS=[<carrier>[,<automode>[,<min_tx_rate>[,<max_tx_rate>[,<min_rx_rate>
[,<max_rx_rate>]]]]]]
Where: Possible <carrier>,  <min_tx_rate>, <max_tx_rate>, <min_rx_rate>, and <max_rx_
rate> values are listed below.

!+MS Command Supported Rates

Modulation  <carrier>   Possible (<min_rx_rate>, <max_rx_rate>,  ( <min_tx_rate>)  

and <max_tx_rate>) Rates (bit/s)

Bell 103  B103  300
Bell 212  B212  1 200 Rx/75 Tx or 75 Rx/1 200 Tx
V.21  V21  300
V.22  V22  1 200
V.22 bis  V22B  2 400 or 1 200
V.23  V23C  1 200
V.32  V32  9 600 or 4 800
V.32 bis  V32B  14 400, 12 000, 9 600, 7 200 or 4 800
V.34  V34   33 600, 31 200, 28 800, 26 400, 24 000, 21 600, 19 200, 16 800,

14 400, 12 000,  9 000, 7 200, 4 800 or 2 400

Defined Values

  <carrier>   A string which specifies the preferred modem carrier to use in  

originating or answering a connection. <carrier> values are strings  
of up to eight characters, consisting only of numeric digits and 
upper case letters.

<carrier> values for ITU standard modulations take the form:  
<letter><1-4 digits><other letters as needed>.

  <automode>   A numeric value which enables or disables automatic modulation 

negotiation (e.g., ITU-T V.32 bis Annex A or V.8). 
0 = Automode disabled.

1 = Automode enabled. (default)
  <min_rx_rate>   Numeric values which specify the lowest (<min_rx_rate>) and  
         and  highest rate at which the modem may establish a receive connection.  
  <max_rx_rate>   May be used to condition distinct limits for the receive direction as

distinct from the transmit direction. Values for this sub parameter 

are decimal encoded, in units of bit/s. The possible values for each 

modulation are listed in Table 1. 

Actual values will be limited to possible values corresponding to 

the entered <carrier> and fall-back <carrier> as determined during 

operation. (default = lowest (<min_rx_rate>) and highest (<max_

rx_rate>) rate supported by the selected carrier.

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<min_tx_rate>   Numeric values which specify the lowest (<min_tx_rate>) and  
          and  highest (<max_tx_rate>) rate at which the modem may establish a  
  <max_tx_rate>   transmit connection. Non-zero values for this subparameter are

decimal encoded, in units of bit/s. The possible values for each 
modulation are listed in Table 1. 
Actual values will be limited to possible values corresponding to 
the entered <carrier> and fall-back <carrier> as determined during 
operation. (default = lowest (<min_tx_rate>) and highest (<max_
tx_rate>) rate supported by the selected carrier.)

Reporting Current or Selected Values

Command:  !+MS?
  Response:   +MS:  <carrier>, <automode>, <min_tx_rate>, <max_tx_rate>, <min_

rx_rate>, <max_rx_rate>

  Note:- The current active settings are reported under control of the !+MR  

parameter.

  Example:   !+MS=V90, 1, 300,   This example uses default values, allowing  

33 600, 300, 33 600  maximum system flexibility to determine  
       optimal receive and transmit rates during

operation.

Reporting Supported Range of Parameter Values

Command:  !+MS=?
  Response:   +MS: (<carrier> range), (<automode> range), (<min_tx_rate> range),

(<max_tx_rate> range), (<min_rx_rate> range), (<max_rx_rate> 
range)

  Example:   +MS: (B103, B212, V21, V22, V22B, V23C, V32, V32B, V34), (0,1),  

(300-33 600), (300-33 600)

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N – Set line baudrate V.110

This command will respond with OK without any functionality after it. V.110 baudrates 
can be set with AT**BRN.

!\N – Operating Mode

This command controls the preferred error correcting mode to be negotiated in a  
subsequent data connection. 
  AT!\N0   Selects normal speed buffered mode

(disables error-correction mode). 
  AT!\N1  Same as !\N0
  AT!\N2   Selects reliable (error-correction) mode. The modem will first

attempt a LAPM connection and then an MNP connection. Failure  

to make a reliable connection results in the modem hanging up. 

(Forces !&Q5, S36=4, and S48=7.)
  AT!\N3   Selects auto reliable mode. This operates the same as \N2 except

failure to make a reliable connection results in the modem falling 

back to the speed buffered normal mode. (Forces S36=7, and S48=7, 

(default)
  AT!\N4   Selects LAPM error-correction mode. Failure to make an LAPM

error-correction connection results in the modem hanging up. 

(Forces S48=0.)  

Note: The !-K1 command can override the !\N4 command.
  AT!\N5   Selects MNP error-correction mode. Failure to make an MNP

error-correction connection results in the modem hanging up.  

(Forces S36=4, and S48=128.)

O – Return to online state

If the IDW-90 is in command mode after issuing an escape sequence out of an existing 
connection, ATO brings the IDW-90 back to data phase.
Must be the last command in AT command line.
  ATO

#O – Received CLIP

Shows the calling line identification (CLIP) that is received with an incoming  
call – number of the calling party.
  AT#O

Q – Suppress result

Suppresses result codes.
  ATQ0  Return status – codes after command input (default)
  ATQ1  No result codes are returned

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!%Q – Report Line Signal Quality

Reports the line signal quality. Returns the higher order byte of the EQM value. 
Based on the EQM value, retrain or fallback/fall forward may be initiated if enabled 
by !%E1 or !%E2.
Only valid in online command mode.

&R – CTS control

Selects the behaviour of the CTS control line from the IDW-90.
  AT&R0  IDW-90 control line CTS is following all changes of RTS
  AT&R1  CTS is always ON (default)
  AT&R2  CTS follows DTR
For nearer information see also chapter 4.3 Serial status lines

S – Display and set internal S register

ATSnn?  Show actual values (decimal) of selected register nn
  ATSnn=xx  Set selected register nn to the decimal value xx.

&S – DSR control

Selects the behaviour of the DSR control line from the IDW-90.
  AT&S  TA control line DSR is always ON (default)
  AT&S1  DSR ON indicates ISDN connection is established and synchronized
  AT&S5  DSR ON indicates an active ISDN call procedure (off hook) 
For further information see also chapter 4.3 Serial status lines

V – Result format

ATV0  Result is presented as numbers (followed by <CR>)
  ATV1  Result is presented as text (default)
  ATV2  Result is presented as text 
     RING and CONNECT including ISDN address, all others include

error causes

&V – Display configuration

  AT&V0   Displays the actual configuration of AT command setting including 

stored ISDN numbers

  AT&V1   Displays the actual configuration of IDW-90+Configurator command 

setting.

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!&V1 – Display Last Connection Statistics
Displays the last connection statistics in the following format (shown with typical results):

TERMINATION REASON
LAST TX rate

.... 26400 BIT/S

HIGHEST TX rate
LAST RX rate

.... 33600 BIT/S

HIGHEST RX rate
PROTOCOL
COMPRESSION
Line QUALITY
Rx LEVEL

....... LAPM

.... V42Bis

... 038

........ 015

Highest Rx State
Highest TX State
EQM Sum
Min Distance
RBS Pattern
Rate Drop
Digital Loss

......... 00B4

.... 0000

..... 00

....... 00

.... 2000

Local Rtrn Count
Remote Rtrn Count

LOCAL REQUEST

. 26400 BIT/S

. 33600 BIT/S

67
67

00

00

Flex 9481814347C4

RBS Pattern:  Shows which bits are being robbed in the least significant 6 bytes, e.g.,  

03 indicates 2 robbed bits in bit positions 0 and 1.

Digital Loss:   Shows if a pad was encountered and if so, what was the digital loss.  

2000 means 0dB.

W – Enhance result messages

  ATW0    Shows result code (RING, CONNECT) without additional info 

(default)
  ATW1    Result is presented with extended result codes

RING and CONNECT including ISDN address, all others include 

error causes. 

Message RINGING will be displayed with an outgoing call.

&W – Store active configuration

The active configuration will be stored in non volatile memory.
  AT&W0
  AT!&W

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21

!&W – Store active configuration

The active configuration for the analogue modem will be stored in non volatile memory.
AT!&W
X – Reduce result messages
Reduces the number of result messages after trying to set up a connection
  ATX0  “CONNECT” only
  ATX1  “CONNECT” with line speed, “BUSY”, “NO DIALTONE” not used
  ATX2  “CONNECT” with line speed, “BUSY” not used
  ATX3  “CONNECT” with line speed, “NO DIALTONE” not used
  ATX4  “CONNECT” with line speed, all messages used (default).

Z – Load stored settings

The active configuration will be replaced by the stored configuration.
Must be the last command in an AT command line.
  ATZ
This command will also cause a soft reset of the analogue modem with a recall of stored 
configuration profile.

&Z – Store call-number

Stores dialling number nn as entry number x into the telephone list (x = 1..3).
  AT&Zx=nn  set entry number x to dialling number nn
  AT&Zx  shows entries number x.
  AT&Z  show all entries.

#Z – Define own msn

Defines the msn nn for the data port.
If the number is set to “*“ (default), all incoming calls are acceptable.
The msn can be displayed by command AT#H or AT&V1.
  AT#Z=nn
The msn is automatically stored to non volatile RAM.

**<cmd> – Execute configuration command

Executes one configuration command, for definition of commands  
see IDW-90+Configurator commands section.
  AT**<cmd>

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Table 1 S-registers

Register  Function  Range  Units  Saved  Default  Note

S0  Rings to Auto-Answer   0–255   rings   *  1

S1  Ring Counter   0–255   rings    0

S2  Escape Character ASCII   0–255  ASCII  *  43 (02Bh)

S3   Carriage Return Character   0–127   ASCII  *  13 (0Dh)

S4  Line Feed Character   0–127  ASCII   *  10 (0Ah)

S5  Backspace Character   0–128  ASCII   *  8

S6  Dial delay  0–255  ASCII  *

S7    Wait Time for Carrier, Silence,  

S9   Enable PNP functionality  

S10   Lost Carrier To Hang Up Delay   1–255  0.1 s   *  14  PSTN

S16   Last occurred CAPI/ISDN  

S30   Disconnect inactivity timer  

S36   LAPM Failure Control   –   –   *  7  PSTN

S40    General Bit-Mapped Options  

S41    General Bit-Mapped Options  

S46   Data Compression Control   –   –   *  138  PSTN

S48   V.42 Negotiation Control   –   –   *  7  PSTN

S86    Analogue Call Failure  

S90   Last incoming ISDN calling  

S91    PSTN Transmit Attenuation Level   0–15  dBm   *  13  PSTN

S93   Unknown AT command handling  0,1  ASCII  *  0 

S210   V.34 Symbol Rate   0–255  –    13 (0Dh)  PSTN

* Register value may be stored in the user profiles with the &W command.

or Dial Tone  0-60  s  *  50

for Windows  0–1  ASCII     1

error cause  –   –      

See *idle  0-255  10s  *  0 

Status  –   –   *  104 (68h)  PSTN

Status  –   –   *  195 (C3h)  PSTN

Indication   0–26  –    21  PSTN

number (CLIP)  –   –      

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S0 – Number of Rings to Auto-Answer

S0 sets the number of the rings required before the modem automatically answers a call.
Setting this parameter to zero disables auto-answer mode.
  0   No automatic call acceptance, acceptance of an incoming call is controlled

by the data terminal (command ATA after RING)

  1  Immediate call acceptance by the terminal adapter (default)

  2..n   Call acceptance through the terminal adapter after n “RING ” messages.

  Note:  The time between two ring messages can be configured using the  

IDW-90-configuration command “ringtimer “(default =5 sec.)

S1 – Ring Counter

Ring Counter (read only), S1 is incremented each time the modem detects a ring signal.

S2 – Escape Character

S2 holds the decimal value of the ASCII character used as the escape character.
The default value 43 corresponds to an ASCII '+'..

S3 – Carriage Return Character

S3 sets the command line and result code terminator character. Default: 13 Carriage 
Return

S4 – Line Feed Character

S4 sets the character recognised as a line feed. The Line Feed control character is output 
after the Carriage Return control character if verbose result codes are used. Default: 10 
Line Feed.

S5 – Backspace Character

S5 sets the character recognised as a backspace. The terminal adapter will not recognise 
the Backspace character if it is set to a value that is greater than 128 ASCII. This charac­ter can be used to edit a command line. When the echo command is enabled, the modem 
echoes back to the local DTE the Backspace character, an ASCII space character and 
second Backspace character; this means a total of three characters are transmitted each 
time the modem processes the Backspace character.

Default: 8 (Backspace)

S6 – Dial delay

This S-register defines how many seconds the unit will delay a call attempt.
The timer starts counting after the ATD command has been sent to the adapter.

S7 – Wait time for Carrier

S7 sets the time the terminal adapter will wait for synchronization and also the time the 
analogue modem will wait for carrier. Default: 50 sec

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S9 – Enable PNP functionality for Windows

S9 enables and disables the Windows Plug and Play identification of the terminal adapter.
(default = 1, enabled)

S10 – Lost Carrier To Hang Up Delay (analogue)

S10 sets the length of time, in tenths of a second, that the analogue modem waits before 
hanging up after a loss of carrier. This allows for a temporary carrier loss without causing 
the local modem to disconnect. When register S10 is set to 255, the modem functions as 
if a carrier is always present.
The actual interval the modem waits before disconnecting is the value in register S10
minus 0.6s.
Therefore, the S10 value must be greater than 0.6s or else the modem disconnects 
before it recognises the carrier.
Range: 1 – 255 tenths of a second

Default: 14 (1.4 seconds)

S16 – Last ocurred CAPI/ISDN error cause

See Table 6  ISDN causes and their explanation (DSS1) 84 and Table 8 CAPI causes and 
their explanation.91

S30 – Disconnect Inactivity Timer

S30 sets the length of time, in tens of seconds, that the modem will stay online before 
disconnecting when no data is sent or received. In error-correction mode, any data trans­mitted or received will reset the timer. In other modes, any data transmitted will reset 
the timer.
Range: 0–255 tens of seconds (0–2 550 seconds) See configuration command “idle”.

S36 – LAPM Failure Control (analogue)

Bits 0 – 2 This value indicates what should happen upon a LAPM failure. These fallback 
options are initiated immediately upon connection if S48=128.If an invalid number is 
entered, the number is accepted into the register, but S36 will act as if the default value 
has been entered.
  0  Modem disconnects.
  1  Modem stays on-line and a Direct mode connection is established.
  2   Reserved.
  3   Modem stays on-line and a Normal mode connection is established.
  4   An MNP connection is attempted and if it fails, the modem disconnects.
  5    An MNP connection is attempted and if it fails, a Direct mode connection is

established.
  6   Reserved.
  7    An MNP connection is attempted and if it fails, a Normal mode connection

is established.(default)

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25

S40 – General Bit Mapped Options Status (analogue)

S40 indicates the status of command options.
  Default: 0 (00h) (00000000b)
  Bits 0 – 1   MNP Extended Services (-Kn)

0  Disable extended services (-K0) (default) 
    1  Enable extended services (-K1) 
    2   Enable extended services (-K2)

  Bits 2 – 7   Reserved.

S41 – General Bit Mapped Options Status (analogue)

S41 indicates the status of command options.
  Default: 195 (C3h) (1100011b)
  Bits 0 – 1   Compression selection (%Cn)
        0  Disabled (%C0 )
        1   MNP 5 (%C1)
        2  V.42 bis (%C2)
      3   MNP 5 and V.42 bis (%C3) (default)
  Bits 2,  6   Auto retrain and fallback/fall forward (%En)
        0 0  Retrain and fallback/fall forward disabled (%E0)
        0 1  Retrain enabled (%E1)
      1 0  Fallback/fall forward enabled (%E2) (default)
  Bits 3 – 5, 7   Reserved.

S46 – Data Compression Control (analogue)

S46 controls selection of compression. The following actions are executed for the given
values:
  S46
  136   Execute error correction protocol with no compression.
  138   Execute error correction protocol with compression. (default)

S48 –V.42 Negotiation Control (analogue)

The V.42 negotiation process determines the capabilities of the remote modem. However, 
when the capabilities of the remote modem are known and negotiation is unnecessary, 
this process can be bypassed if so desired.
  S48
  0   Disable negotiation; bypass the detection and negotiation phases; and

proceed with LAPM.
  7  Enable negotiation. (default)
  128    Disable negotiation; bypass the detection and negotiation phases; and

proceed at once with the fallback action specified in S36. Can be 

used to force MNP.

S86 – Call Failure Reason Code (analogue)

When the internal analogue modem issues a NO CARRIER result code, a value is writ­ten to S86 Register to help determine the reason for the failed connection. S86 records 
the first event that contributes to a NO CARRIER message. The S86 register is only 
updated when the NO CARRIER is sent as result from a broken connection to an ana­logue subscriber. The code definitions are:

26

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S86
  0  Normal hangup,no error occurred.
  1  Reserved.
  2  Reserved.
  3  Call Waiting caused disconnect.
  4   Physical carrier loss.
  5   No error correction at the other end.
  6  No response to feature negotiation.
  7   This modem is async only; the other modem is sync only.
  8   No framing technique in common.
  9  No protocol in common.
  10  Bad response to feature negotiation.
  11   No sync information from the remote modem.
  12   Normal hang-up initiated by the remote modem.
  13   Retransmission limit reached.
  14   Protocol violation occurred.
  15   Lost DTR.
  16   Received GSTN clear down.
  17   Inactivity timeout.
  18  Speed not supported.
  19  Long space disconnect.
  20  Key abort disconnect.
  21   Clears previous disconnect reason.
  22   No connection established.
  23   Disconnect after three retrains.
  24   Call Waiting tone detected.
  25  Extension pickup detected.
  26  Remote hang-up detected.

S90 – Last incoming ISDN calling number (CLIP)

S90 displays the ISDN line identification of the last incoming call.

S91 – PSTN Transmit Attenuation Level (analogue)

S91 sets the transmit attenuation level from 0 to 15 dBm for the PSTN mode, resulting 
in a transmit level from 0 to – 15 dBm.

Default: 13.

S93 – Unknown AT command handling

Controls the response to unknown AT-commands
  0   Undefined AT commands will be responded to with ERROR (default)
  1  Undefined AT commands will be responded to with OK

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27

S210 – V.34 Symbol Rates (analogue)

The bits in this parameter control V.34 symbols rates and enables/disables V.34  
asymmetric rates. This parameter is used for diagnostic purposes only.
  Bits 0 – 2 
  Selects the range of allowed V.34 symbol rates.
  Bit      Symbol Rates (baud)
  2  1  0 
  0  0  0  2 400 only
  0  0  1  2 400 only (no 2 734)
  0  1  0  2 400, 2 800
  0  1  1  2 400, 2 800, 3 000
  1  0  0  2 400, 2 800, 3 000, 3 200
  1  0  1  2 400, 2 800, 3 000, 3 200, 3 429 (default)
  Bit 3 
Enable/disable V.34 asymmetric rates.
    0 = Disable asymmetric rates
   1 = Enable asymmetric rates (default)
  Bits 4 – 7 Reserved.

  Default: 13.

Table 1 S-registers

Short Form  Long Form  Description  Note

0  OK   A command line has been executed

1   CONNECT <rn>   Connection established 

2  RING <rn>  Indicates an incoming call  (SETUP received)

3  NO CARRIER <xx>   No synchronization (xx = ISDN error cause)  

4  ERROR   Illegal command or error that can not be  

    3.   A command parameter within the command  

5  CONNECT  1 200 <rn>   A connection with a line speed of 1200 bit/s  

6  NO  DIALTONE <xx>  No access to ISDN network (xx = ISDN error)

7  BUSY<xx>  Number engaged (xx = ISDN error cause)

( rn = call number of remote site)

or if the the call was to an analogue destination. 
Replaces BUSY and NO DIALTONE.  
Dependent on ATXn setting. Also sent when  
the modem auto-disconnects due to loss of  
carrier.

indicated otherwise e.g.  

1. The command line contains a syntax error.  

2.  The modem cannot execute a command  
contained in the command line, i.e., the  
command does not exist or is not  
supported. see register S93

line is outside the permitted range.

has been established.  
(V110 or analogue connection)

28

6620-3200

Table 2 cont.

Short Form  Long Form  Description  Note

8  NO ANSWER<xx>   No connection; called number can not be  

9  CONNECT 600 <rn>  Connection, line speed 600 bit/s.  1

11  CONNECT 4 800 <rn>   Connection, line speed 4 800 bit/s.  

12  CONNECT 9 600 <rn>   Connection, line speed 9 600 bit/s.  

13  CONNECT 7 200 <rn>  Connection, line speed 7 200 bit/s.  1

14  CONNECT 12 000 <rn>  Connection, line speed 12 000 bit/s.   1

15  CONNECT 14 400 <rn>  Connection, line speed 14 400 bit/s.  1

16  CONNECT 19 200 <rn>   Connection, line speed 19 200 bit/s.  

19  CONNECT 64 000 <rn>  Connection, line speed 64 000 bit/s. 

59  CONNECT 16 800 <rn>  Connection, line speed 16 800 bit/s  1

61  CONNECT 21 600 <rn>  Connection, line speed 21 600 bit/s  1

62  CONNECT 24 000 <rn>  Connection, line speed 24 000 bit/s  1

63  CONNECT 26 400 <rn>  Connection, line speed 26 400 bit/s  1

64  CONNECT 28 800 <rn>  Connection, line speed 28 800 bit/s  1

84  CONNECT 33 600 <rn>  Connection, line speed 33 600 bit/s  1

91  CONNECT 31 200 <rn>  Connection, line speed 31 200 bit/s  1

Note 1. Analogue modem result code.

reached (xx = ISDN error cause) or if the the  
call was to an analogue destination. The modem  
is attempting to originate a call if a continuous  
ringing signal is detected on the line until the  
expiration of the timer S7.

(V.110 or analogue connection)

(V.110 or analogue connection)

(V.110 or analogue connection)  1

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29

4.1 Call number display

In AT command mode, call number display (does not belong to the AT command stand­ard) can be turned on by issuing the command ATW1. If turned on, the call number of 
the caller is shown with the Connect- or Ring-message (in pointed brackets), depending 
on the signalling in D-channel.
If the IDW-90 is used with the public network then the call number of the remote site 
(including area code) is displayed.

Example:  TxD  RxD
    ATW1

OK
      RING <040890880>
    ATA
      CONNECT 64000 <040890880>

4.2 Error cause display

Example:  Tx data  Rx data
    ATW1

OK
    ATD12345
      NO CARRIER <34A2>

In AT command mode, error cause display (does not belong to the AT command stand­ard) can be turned on by issuing the command ATW1. The shown error causes use the 
coding defined by the CAPI definition. ISDN error causes from the ISDN network are 
always coded as 34xxH, where xx represents the hexadecimal version of the ISDN error 
cause (see page 84). All other causes are CAPI error causes (see page 91).

4.3 Serial status lines

The behaviour of the output serial status lines DSR, CTS, DCD, RI and the input serial 
status lines DTR, RTS can be configured with AT and configurator commands

After power on all serial status lines from the TA will be inactive.
The serial status line DSR can be configured to signal the activation of the current com­mand set (cdsr=0). When changing the command set (cmds) the DSR line goes off during 
this change phase.
The serial input status lines DTR and RTS will be controlled of an interrupt in the IDW­90 firmware. With regard of this behave the maximum input level change must be lower 
than 1kHz.

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6620-3200

The RS-232 control circuits will be described for the three different states:
  no connect phase:   The TA has no ISDN connection.

The serial data (commands and responses) will be used to 

configure the TA (command mode).
  dial phase:  The TA has started to establish an ISDN connection and is 
  and  waiting for the synchronization.
  disconnect phase:   The TA disconnects the existing connection

(B-channel and D-channel connection).
  connect phase:  ISDN data connection is established  
     (D-channel and B-channel connected).

Serial data will be sent or received according to the  

configured B-channel protocol (data mode).

Table 3 Serial status line control

Status line  Description  no connect  dial/disc.  connect

CTS  0: CTS follows RTS  =RTS/flc.*  =RTS/flc.*  =RTS/flc.**

  1: CTS always ON  ON/flc.*  ON/flc.*  ON/flc.**

  2: CTS follows DTR  =DTR/flc.*  =DTR/flc.*  =DTR/flc.**

DCD  0: DCD always ON  ON  ON  ON

  1: DCD indicates a connection  OFF  OFF  ON

  2: DCD follows DTR  =DTR  =DTR  =DTR

DSR  0: DSR always ON  ON  ON  ON

  1: DSR indicates a connection  OFF  OFF  ON

  2: DSR follows DTR  =DTR  =DTR  =DTR

  3: DSR follows DCD  =DCD  =DCD  =DCD

   5: DSR Off Hook  OFF  ON  ON 

flc.*   CTS signals the serial flow control from TA (DCE) to the DTE in the command mode and 

data mode (flc=5).

flc.**   CTS signals the serial flow control from TA (DCE) to the DTE in the flow control modes  

3 or 5 (flc=3 or flc=5).

(connection establishment started) 

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31

  DTR:  Data terminal ready

The serial status line DTR is used to control the ISDN connection.

0: No control

    Outgoing calls:   The DTR level will be ignored to establish  

a connection.

    Incoming calls:   Incoming calls will be accepted independent  

of DTR status.

    Disconnection:   DTR drop does not disconnect an active  

connection.

2: DTR line will be considered

    Outgoing calls:   The DTR level will be considered. 

DTR off in the command mode refuses the call  
procedure with ERROR.

    Incoming calls:   Incoming calls will be accepted only when DTR  

is ON. The incoming call request can be refused 
with changing DTR to off.

    Disconnection:   DTR drop disconnects an active connection or  

a call during the dial phase.  
If DTR will be dropped immediately after sending 
serial data there is no guarantee to transmit this 
data to the destination side. 
A delay of (configured "txfwd" time + 10ms) 
between sending the last data byte and dopping  
the DTR line would send out the last data stream.

4: DTR ignore and DTR drop disconnects

    Outgoing calls:   The DTR level will be ignored to establish  

a connection.

    Incoming calls:   Incoming calls will be accepted independent of DTR 

status.
    Disconnection:  DTR drop disconnects an active connection.
       If DTR will be dropped immediately after sending

serial data there is no guarantee to transmit this 

data to the destination side.
       A delay of (configured "txfwd" time + 10ms)

between sending the last data byte and dropping the 

DTR line would send out the last data stream.

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6620-3200

  RTS:  Request to send (flow control)

This serial status line is used for the flow control between the DTE device and the  
IDW-90 (DCE).
  0:  No flowcontrol
  3:  Hardware flowcontrol RTS/CTS in the data mode
  5:  Hardware flowcontrol RTS/CTS in data mode and command mode

•   If the DTE activates the flow control (RTS=off) the TA needs up to 3 characters 
to stop the serial data stream to the DTE.

•   If the connection will be cleared during an active flow control (RTS=off) the 
received data will be sent to the DTE device when RTS becomes active. The 
reported result code will also be sent with RTS on. 
The control lines to indicate the active connection (DCD) and the "off hook" 
state (DSR) will be changed without recognizing the current flow control state.

  CTS:  Clear to send (flow control)

This serial status line is used for the flow control between the TA (DCE) and the  
DTE device. 
  0:  No flowcontrol
  3:  Hardware flowcontrol RTS/CTS in the data mode
  5:  Hardware flowcontrol RTS/CTS in data mode and command mode

•   If the TA activates the flow control (CTS=off) the TA will buffer up to 256 bytes 
from the DTE device.

•   If the connection will be cleared with DTR=off during an active flow control 
CTS=off) the current connection will be cleared after a short timeout. 
The received serial data from the DTE during the connection will be erased  
after clearing the connection. 
The control lines to indicate the active connection (DCD) and the "off hook" 
state (DSR) will be changed without recognizing the current flow control state.

RI:  Ring indicator
The serial status line RI becomes active during an incoming call request.
If the incoming call will be accepted or the call request ended the RI control circuit  
goes off.

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4.4 ISDN access control

Using these commands you can setup a table, to allow only dedicated callers to get a 
connection to the IDW-90.
If this list is empty (default) or one entry is set to star (*), any incoming call is allowed.
Every incoming call that does not fit to one of the entries of acctab will be ignored. The 
received calling party number is compared to every entry starting at the last digit and is 
stopped when the shorter number is completely compared.

acctabx nn/ss  set entry number x to ISDN number nn and subaddress ss
  acctabx -  clear entry number x
  acctabx *  allow all incoming calls to be accepted
  acctabx  show entry number x
  acctab  show all entries

Maximum number of entries = 5; x = 1..5
Maximum length of ISDN number = 20 digits
Maximum length of subaddress = 20 digits
The ISDN number nn can contain wildcards:
  * : represents one or more digits
  ? : represents exactly one digit

Note:  If a subaddress is set, the received calling subaddress must be identical to the  

subaddress that is set.

Examples:
  acctab1  1234567890  accept only specified number
  acctab2  *456*  accept all numbers with 456 somewhere in the middle
  acctab3  ?2345678??    accept all numbers with 2345678 in the middle preceded

by one digit and followed by two digits.

  acctab2  *1234/987   accept all numbers that end with 1234 and have the  

subaddress 987
  acctab3  *  accept all incoming calls without subaddresses
  acctab3  -  clear entry no. 3

Note:  If you are not sure in which format the calling number will be presented with an 

incoming call, please use the command ATW1 to see the the format of the calling 
number in the RING message. This number can be entered into the acctab.

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4.5 Sub addressing

With outgoing and incoming calls the transmission of subaddresses can be performed 
using the ISDN supplementary service SUB. The subaddress is transmitted transparently 
from the calling party to the called party before the B channel connection is fully estab­lished.
Please note, that this ISDN service typically has to be enabled by the ISDN service pro­vider and may be charged additionally.

The subaddress is separated by an “/” from the called number.

The functionality Subaddressing can be used with the dialling procedures AT-command 
set, and automatic call.

Examples:
  ATDisdnnumber[/subaddr]
    isdnnumber  Dialling called party number 
    subaddr  Called subaddress

RING [<rn>[/subaddr]]
  CONNECT [<rn>[/subaddr]]

rn    Calling party number
    subaddr  Calling party subaddress

The calling subbaddress can be set up using the configuration commands subi and subo.

Note:- The subaddress can be entered additionally into all tables that contain  

ISDN numbers for dialling or checking an ISDN address.

4.6 Automatic call establishment “Hotline” call

Automatic call establishment can be activated in three ways:

  1. Initiated by an activation of the DTR control line (cmds= 6).

2.  Initiated by activity of the Data line from DTE (cmds=7), autobauding is disabled 
in this mode.

  3. Initiated at power on reset, “always on” (cmds=8).

Autobauding is not supported when cmds is set to 6,7 or 8. Please select a baudrate  
with DIP-switches or AT command. If autobauding is selected DTE baudrate will be  
set to 9600 bit/s (br=4). 
The status line DCD/DTR can be used to indicate a successful connection, 
(see command cdcd and cdtr).
If a connection cannot be established successfully an automatic retry will be started.  
The duration of trying to establish the connection and the pause for next retry can  
be configured. 
The dialled numbers are taken from the table catab, all numbers from the call table 
catab will be taken one after each other. The parameter cato sets the timeout for estab­lishing the call, capa the pause between call attempt and catry the number of retries.
The call can be disconnected through deactivating DTR see cdtr parameter, or through 
using the inactivity timer idle. 
To return to the AT- or Configurator command set the DIP-switches can be used SW3:5­SW3:7.

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4.7 Transparent I/O

4.7.1 Digital Input

The digital input gives the following functionality:

1. Establishing a data connection to a predefined target number.

   When the input is switched (pulsed), the modem will establish a data connection  

to the stored predefined number. After a time, specified in the modem, without  
data exchange, the connection shall be released (inactivity timer).

2. Sending a SMS Message to a predefined targetnumber.

   When the input is switched (pulsed), the modem will establish a connection to an 

SMS service centre defined by a predefined number. The SMS Messages can handle 
at least 160 characters. TAP and UCP protocols is supported.

3. Sending a Text Message to a predefined targetnumber.

   When the input is triggered, the modem establishes a connection to the stored tel-

ephone number and send out a short text message.

4. Switch the remote digital output.

   When the input is triggered, the modem establishes a connection to the stored 

number of a remote unit and sends out a command, that switches (pulses) the 
remote output according to a predefined sequence.

5. Execute AT-Command string

   Execute a pre-programmable AT command string stored in the table of entries.  

This can for example be used for switching DTE communication parameters  
for online an offline mode by using two entries

6. Transparent I/O

   When the input is triggered, the modem establishes a connection to the stored 

number of a remote unit and sends out a command. After a connection is estab­lished, the I/O is bi-directional

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4.8 Digital Output

t

L

>3t

max

t

H

>3t

max

The digital output gives the following functionality:

  1. Change over contact (SPDP).

  2.  Remote controlled. 

• Transparent I/O transfer 

• Static set ON/OFF 

• Pulsed via string pattern “101.. “

  3. Follow DCD or DTR.

1. Output Contact

The output shall have the possibility to switch if an incoming call is detected. This will  
be detected via an incoming ring signal. It will be controlled via an AT-Command or a  
S-register.

2. Remote controlled

The output can be programmed to follow a remote modem data input. A remote unit 
can also set/reset the output as well as transferring a sequence of set- and resets of  
the output.

3. Follow DCD/Network

The output can be programmable to follow the local DCD or DTR signal.
To accept any operation on the output from remote modems the “Remote IO Enable”

DIP switch must be set “ON”

5. Input Pulsing

For the pulsing of an input, some timings must be kept. The parameters t
programmable from 10 to 2550 s. When determining the number of pulses there must be 
more than 3t

 counting is restarted. When the input has been in its inactive state for more than 

3t

max

 after, x valid pulses, the number of pulses counted is accumulated.

3t

max

 separating the pulse sequences. If a pulse is in active state for more than 

max

min

 and t

max

 are 

tmin < tL < t

tmin < tH < t

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max

37

5.1 Using Multilink PPP

To enable Multilink PPP handling within the IDW-90 please enable the B channel protocol 
ML-PPP: prot = 31.

ML-PPP may be used with two different authentication protocols during the link estab­lishment phase:

  •   PAP (password authentication protocol, RFC 1334)

  •   CHAP (challenge handshake authentication protocol, RFC 1994) with variants 

1. MD5 according to RFC 1321 

2. Microsoft Chap according to RFC 2433.

The simpler PAP transmits the user password as clear text over the line, whereas  
CHAP uses encryption. Which protocol is actually used depends on:

•   the local PC: if the dialup network configuration requests password  
encryption only CHAP will be used,

•   the remote host configuration: it may (e.g.) allow both PAP and  
CHAP, CHAP only etc..

5.1.1 Restrictions on Windows95

The CHAP protocol requires that the local side (PC or TA) responds with the proper, 
encrypted password when requested by the remote host. Since Windows95 does not 
respond on repeated requests CHAP can be used on the second link only if the TA 
knows the password. It must be stored in the TA’s NVRAM:

•   Enter “at**chappwd=<password>” to input your password in the TA. 
Warning: The input echo is shown in clear text, it should be hidden from  
unauthorized persons. Nevertheless, commands as “AT&V1” display the  
password as a sequence of asterisks (“*”).

  •   Enter “AT&W” to store the setting in the TA.

If the password chappwd is not stored on the TA (or is wrong) and remote and/or  
local dialup network configuration require password encryption, the second link will be 
physically established for a short time, and will then be disconnected. As a consequence 
the Multilink option is disabled for the current connection.

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5.2 Bandwidth on demand (“BOD”)

Enabling this feature will cause the IDW-90 to use the multilink PPP protocol to enhance 
the ISDN throughput using the second B channel automatically:

•   If the throughput of the internet connection is higher than a definable value  
a second B channel connection will be established automatically and used for  
data transfer.

•   If the throughput of the internet connection is lower than a definable value  
the second B channel connection will be disconnected automatically.

at**bod=0  disable BOD (default)
  at**bod=1  enable BOD
  at**bodiv=<incrValue>   Throughput level to add 2nd B channel connection

(in kbit/s) (default=40)

  at**bodit=<incrTime>   duration that bodiv has been reached to add 2nd  

B channel (in secs) (default=30)

  at**boddv=<decrValue>   Throughput level to release 2nd B channel connection  

(in kbit/s) (default=40)

  at**boddt=<decrTime>   duration that boddv has been reached to release  

2nd B channel (in secs) (default=30)

Note: call bumping (cmlp) has higher priority than bandwidth on demand.

5.3 IDW-90+Configurator command set

The settings of the IDW-90 for the serial interface and the S0 interface are called  
configuration. The IDW-90 is delivered with a set of pre-set values. The following section 
shows how the configuration commands allow viewing and alteration of the of the  
IDW-90 configuration. The values can be stored in non volatile memory, such that they 
will remain unchanged even if the power supply is disconnected.

The IDW-90 can be configured in the following ways:

  •   by using IDW-90+ Configurator commands entered by a locally connected PC.

•   by using IDW-90+ Configurator commands entered via the ISDN access  
(remote configuration).

  •   by using the AT command set entered by a locally connected PC.

  •   By setting DIP-switches.

The configurator can be entered in the following ways:

  •   remotely via ISDN by using the ATD<CALLEDnumber>e command

•   remotely from any modem by using the remote access escape sequence  
‘++++’ and log on to the remote access configurator

•   by using a special command from the asynchronous DTE command interface  
(AT: “ATCONF”).

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5.4 Configuring the IDW-90 with AT commands

To execute one IDW-90+configuration command cmd from the AT command mode, 
issue the command: “at**cmd” .
To call up the IDW-90+configurator please use the command “atconf”.
Now leave the IDW-90+configurator by the command “quit”.
Note:  After altering one of the profile values you have to give the additional commands

save and go. This is necessary to save and activate these new parameters.

5.5  Configuration using the IDW-90+Configurator commands 
(remote)

There are two methods to remotely configure an IDW-90. Both methods are described 
here for backward compatibility and compatibility with other Westermo modem prod­ucts. Method 1 has the advantage that its transparent on the remote site and can even  
be performed when the remote IDW-90 is connected on the other B-channel.
Method 2 has the advantage that configuration can be made from any ISDN terminal 
adapter or modem supporting analogue modulation (PSTN or GSM).

5.5.1 Method 1 

The IDW-90 to be configured is referred here as “remote IDW-90”.
The IDW-90 to configure is referred as “local IDW-90”.
Please make sure that the remote IDW-90 is connected to the ISDN line and  
powered up.

  •   Connect the local IDW-90 to ISDN interface

  •   Connect the PC's COM port to the DTE interface of the local IDW-90.

  •   Connect the power supply to the mains socket.

  •   Start a terminal emulation program (i.e. Windows-Terminal)

  •   Configure the local IDW-90 with the B channel protocol X.75 and blocksize 2048.

  •   Set up an ISDN connection to the remote IDW-90 to be configured by using 

the command: ATD<ISDN-No>e<CR>. The extension “e” at the end of the calling 
number gives a connection to the internal remote access of the remote IDW-90. 
The called IDW-90 configurator acknowledges by requesting the remote pass­word. Enter the correct password (default: no password, just return). Now work 
with the configurator by using the IDW-90+Configurator commands.

  •   Configure the parameter for the remote IDW-90 from your terminal program 

and store them (if required).

Example:  
  To change the used B channel protocol to X.75  enter the following commands:
   prot 10<CR>  (set protocol to X.75 – blocksize 2048)
   save<CR>  (save the new configuration)
  Hint:   The active set of parameters can be displayed on screen by the

configurator with the command “show<CR>”. 
If necessary the remote IDW-90 can be reset using the command 
“reset<CR>”.

  •   Hang up the ISDN connection by leaving the configurator using the command 

quit. Leave your terminal program. After the next reset the changes will be active.

Now the configured remote IDW-90 with the new set of parameters can be used. 

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5.5.2 Method 2

The IDW-90 to be configured is referred here as “remote IDW-90”.
The modem used  to configure is referred as “local modem”.
Make sure that the remote IDW-90 is connected to the ISDN line and powered up.

  •   Connect the local modem to its media (ISDN, PSTN or GSM)

  •   Connect the PC's COM port to the DTE interface of the local modem.

  •   Connect the power supply to the mains socket.

  •   Start a terminal emulation program (i.e. Windows-Terminal)

  •   Configure the local modem protocol

•   1.   If local connection is ISDN, configure with the B channel protocol X.75  
and blocksize 2048.

•   2.   If local connection uses some analogue modem no special configuration  
needs to be done at remote IDW-90.

  •   Set up an ISDN connection to the remote IDW-90 to be configured by using the 

normal dial command: ATD<ISDN-No><CR>. When connected send the remote 
escape sequence <++++>. The called IDW-90 configurator acknowledges by 
requesting the remote password.  enter the correct password (default: no  
password, just return). Now work with the configurator by using the  
IDW-90+Configurator commands.

  •   Configure the parameter for the remote IDW-90 from your terminal program 

and store them.

  •   Example: 

To change the used B channel protocol to X.75 enter the following commands:
   prot 10<CR>  (set protocol to X.75 – blocksize 2048)
   save<CR>  (save the new configuration)
  Hint:  The active set of parameters can be displayed on screen by the configurator

with the command “show<CR>”. 
If necessary the remote IDW-90 can be reset using the command 
“reset<CR>”.

  •   Hang up the ISDN connection by leaving the configurator using the command 

quit. Leave your terminal program. After the next reset the changes will be active.

Now the configured remote IDW-90 with the new set of parameters can be used.

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5.6 Remote access control

By using the following commands a table can be set up which allows only dedicated call­ers to get a connection to the remote management facilities inside the TA.
If this list is empty (default) or one entry with a star (*) is set, any incoming call is 
allowed.
Every incoming call that does not match one of the entries of racctab will be rejected 
with the ISDN cause “call rejected”.

  racctabx  nn/ss   set entry number x to ISDN number nn  

and sub address ss
  racctabx  -  clear entry number x
  racctabx  *  Allow all incoming calls to be accepted
  racctabx    Show entry number x
  racctab    Show all entries

Maximum number of entries = 5
Maximum length of ISDN number = 20 digits
Maximum length of sub address = 20 digits
The ISDN number can contain wildcards:
  *: represents one or more digits
  ?: represents exactly one digit

Example:
  racctab1  1234567890  ; accept the only specified number
  racctab2  *456*  ; accept all numbers with 456 somewhere in the  middle
  racctab3  ?2345678??    ; accept all numbers with 2345678 in the middle preceded

by one digit and followed by two digits.
  racctab3  *  ; accept all incoming calls
  racctab3  -  ; clear entry no. 3

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5.7 List of IDW-90+Configurator commands

The IDW-90+Configuration commands typed in must have the correct syntax and be 
complete, including all blanks. Capital/small letter use is not important. The entry is not 
case sensitive.
The values in bold are factory defaults. The usage is:
  [?]<command>[=parameter]
Example to set the ISDN B channel protocol to X.75:
  prot=10
Example to show the selected ISDN protocol:
  prot
Example to show all selectable ISDN protocols:
  ?prot

Some major IDW-90+ commands are shown here as a preview:
  show  show the normally used parameter
  showall  show all changeable parameters
  quit  leave IDW-90+Configurator
  help  show all available commands
  defa  setup default parameter set
  defa 1  setup factory default parameter set
  save  store parameter (non volatile)

<cmd>? – More information for one command
Displays the allowed values for one selected command <cmd>.

Table 4 List of Configurator commands

Configurator Command  Description

acctab  Isdn access control

atsx, atopt, atrej  AT command parameter set

autoreset  TA reset option

bc  Bearer capability

bod  Bandwidth On Demand enable

bodiv  BOD increase value

bodit  BOD increase timer

boddv  BOD decrease value

boddt  BOD decrease timer

br  Baudrate asynchronous

brn  Line baudrate asynchronous V.110

bsize  Frame length

catab  Automatic call table

cato  Call timeout to abort

capa  Call pause

catry  Calls retry

ccts  CTS control

cdcd  DCD control

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Configurator Command  Description

cdsr  DSR control

cdtr  DTR control

chappwd  Set password for PPP chap authorisation

cipm  Cip value mask

cipo  Cip value outgoing

cmds  Command set (note 1, page 85)

dabort  Dial abort

dbits  Asynchronous databits

defa  Default settings

dhtc  Highest 2-way channel (X.25 D channel)

dltc  Lowest 2-way channel (X.25 D channel)

dte  B channel link address

flc  Flow control

ftei  Tei value point to point, fixed tei

fwload  Load new firmware

fwstart  Start new firmware

htc  highest 2-way channel (X.25 B channel)

hlc  Higher layer compability

help 

idle  Idle data timeout

iinit  ISDN initialisation after power ON

isdn  ISDN D channel protocol

k  Windowsize

lcgr  Logical group number X.25

llc  Low layer compatibility

load  Load stored parameter setting

loadsw  load DIP-switches parameter setting

msni  Multiple Subscriber Number for incoming calls

msno  Multiple Subscriber Number for outgoing calls

nui  Nui and password

prot  B channel protocol

prty  Asynchronous parity

ptp  ISDN interface type

pvc  X.25 connections permanent virtual circuits usage

quit, exit  Activate parameter changes

racctab  Access table setup for remote access

reset  Reset IDW-90

ridle  Idle data timeout for remote connection

ringtimer  Delay of RING messages

rmsg  Message for remote access

rmsn  Multiple Subscriber Number for remote

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Configurator Command  Description

rstmsg  Startup message

rsttim  Startup timer

rsub  Subaddress for remote access

save  Store parameter changes

sbits  Number of stopbits.

sertrc  Serial link trace

show  Show parameters

showall  Show all parameters

status  Status of serial line and ISDN

subi  Sub address for incoming calls

subo  Sub address for outgoing calls

swstatus  TA-DIP Switches status

tdi  Timer delay incoming call

tei  TEI value

trcnnn  commands for internal trace

txfwd  Timer for data forwarding

t320  Timer delay ISDN disconnect

v110llc  Usage of LLC for V.110 connections

v110flc  Usage of V.110 flowcontrol

*wcb  Callback security

*wcbpwd  Callback/secure access password

*wcbtab  Secure callback table

*wiod  General IO delete entry

*wiol  General IO list

 *wiot  General IO test

* wrap  Remote access password

w  B channel windowsize L3

xnr  Own X.25 address

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acctab – isdn access control

Using these commands a table can be set up which allows only dedicated callers to get a
connection to the TA.

acctabx nn/ss  set entry number x to ISDN number nn and subaddress ss
  acctabx -  clear entry number x
  acctabx *  Allow all incoming calls to be accepted
  acctabx   show entry number x
  acctab   Show all entries

Note:  for a detailed description see section ”ISDN access control” on page 39

atsx, atopt, atrej – AT command parameter set

AT command set only:
  Handle AT specific settings.
  Show and change AT S registers by entering the new value.
  ats0  show setting of S0-Register
  ats0=1  set Register S0 to 1
  atopt  show option register (bit-values):
    bit 0  : 01 => ATV1
    bit 1  : 02 => ATW1
    bit 2  : 04 => ATQ1
    bit 3  : 08 => ATE1
    bit 4  : 10 => ATS9=0
  atrej  show reject register => setting of AT#R (0,1)

autoreset – TA reset option

The autoreset command has a default value of 0, but if the value is 1 then the unit will 
reset every time a disconnect occurs.
If the value is more that 1 and less that 255 the unit resets periodically by the number of  
minutes specified by this command.
  Example:  autoreset=0 (default)
  autoreset=1
  autoreset=20

bc – Bearer capability

Bearer capability for outgoing data calls.
  bc = 0000 (default)

bod – Bandwidth On Demand enable

0 disable BOD (default)
  1 enable BOD

bodiv – BOD increase value

  bodiv=<incrValue>   Sets the bit-rate in kbit/s at which a second B channel  

is connected (default=40).

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bodit – BOD increase timer

  bodit=<incrTime>   Sets the time in seconds the bit-rate has to exceed the increase 

value before the second B-channel is connected (default=30)

boddv – BOD decrease value

  boddv=<decrValue>  Sets the bit-rate in kbit/s at which  the second B channel is  

disconnected (default=40).

boddt – BOD decrease timer

  boddt=<incrTime>   Sets the time in seconds the bit-rate has to be below the 

increase value before the second B-channel is disconnected 
(default=30)

br – Baudrate asynchronous

Selection of the asynchronous baudrate for the DTE interface
  0: Autobauding, (automatic local bit rate adaption) (default)
  1: 1 200 bit/s
  2: 2 400 bit/s
  3: 4 800 bit/s
  4: 9 600 bit/s
  5: 19 200 bit/s
  6: 38 400 bit/s
  7: 57 600 bit/s
  8: 115 200 bit/s
Note: Autobauding (br = 0) is available for AT command set only.

brn – Line baudrate asynchronous V.110

Selection of the asynchronous baudrate for V.110 line (B channel)
  0: Line baudrate equals local baudrate (default)
  1: 1 200 bit/s
  2: 2 400 bit/s
  3: 4 800 bit/s
  4: 9 600 bit/s
  5: 19 200 bit/s
  6: 38 400 bit/s

bsize – Frame length

Maximum length of a data frame (default 2048)  
Note! changing the B-channel protocol will affect the bsize parameter.  
This setting is valid for both received and transmitted data frames.
  prot=X.25-B  128
  prot=X.31-D  128
  prot=X.75  2048
  values:  32 .. 2048

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catab – Automatic call table

With this command the priority table of automatic DTR and TxD calling number is  
set-up.
The IDW-90 will call the numbers defined in order from catab1 to catab3 until a con­nection is established. The character # is used as prefix to signal that the call shall use an 
analogue connection.
  catabx  nn  set entry number x to receiver number nn.
  catabx  -  clear entry number x
  catabx    show entry number x
  catab    show all entries

Maximum number of entries = 3
Maximum length of  number = 20 digits.

In example below entry 1 tells IDW-90 to make a call using the analogue modem, while 
entry 2 and 3 making ISDN –ISDN connections.

Example:
  catab1 #00461661200
  catab2 004616480250
  catab3 0123987652

cato – Call timeout to abort

Time to abort a call if not successfully connected after n seconds.
  n = 3..255, (default 15 s).

capa – Call pause

Automatic call: set a call pause for n seconds before next call attempt.
  n = 0 .. 255, n=0 no call retry, (default 3s).

catry – Calls retry

Automatic call: max. no of tries of every number entry in catab.
  n = 1 .. 255 (default 1)

ccts – CTS control

CTS control
  0: CTS follows RTS
  1: CTS always ON (default)
  2: CTS follows DTR
See also 4.3 Serial status lines

cdcd – DCD control

DCD control
  0: DCD always ON
  1: DCD indicates a connection (default)
  2: DCD follows DTR
  3: DCD indicates link level established (X.31-D only)
See also 4.3 Serial status lines

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cdsr – DSR control

DSR control
  0: DSR always ON (default)
  1: DSR indicates a connection
  2: DSR follows DTR
See also 4.3 Serial status lines

cdtr – DTR control

Usage of DTR to control ISDN connection
  0:-No control:
           Incoming calls will be accepted independent of DTR status;

DTR drop does not disconnect an active connection.
  2: DTR off disconnects (default)
           Incoming calls will be accepted only when DTR is ON;

DTR drop disconnects an active connection.
  4: DTR is evaluated: 
           Incoming calls will be accepted independent of DTR

status; DTR drop disconnects an active connection
See also 4.3 Serial status lines

chappwd – Set password for PPP chap authorisation 

(only required for WINDOWS 95)

Enable ML-PPP CHAP authorisation by setting the password corresponding to the user 
name used for the PPP connection. If the server does not handle CHAP an automatic 
fallback to PAP is performed.

  chappwd=<password>  set password for CHAP

Note:   Since the password is shown in plain text it may be disclosed by unauthorised 

persons.

cipm – cip value mask

Selects the bearer services that can be accepted with an incoming call. The definition 
of hbhbhbhb (double word) is the CIP mask as defined in the CAPI 2.0 specification 
(default 00010016h).
  Example:    cipm=00010016: Accept analogue incoming calls

cipm=00000001: Accept all incoming calls.

See also AT command AT#C1.

cipo – cip value outgoing

Selects the bearer service that will be sent with an outgoing call.
The value for hbhb (word) is the CIP value as defined in the CAPI 2.0 specification 
(default 0002h).
  Example:   An outgoing call as a voice call: cipo =0004.
See also AT command AT#C2.

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cmds – Command set (note 1, page 85)

Command set for connection control
  0:   AT command set (default)
    6:   Automatic dialling when DTR is set
    7:   Automatic dialling when TxD is received by the IDW-90
    8:   Automatic dialling always connect
  10:   IDW-90+Configurator 
  12:  Incoming calls only (no active connections)

dabort – Dial abort

Dialling will normally be aborted by characters coming from the DTE, by setting  
parameter dabort =0 characters received during the dial procedure will be ignored.
  0:   Dialling will not be aborted by incoming characters.
  1:   Characters from DTE aborts dial during the connection process (default).

dbits – Asynchronous databits
Number of data bits asynchronous chars (default: 8) 7, 8

defa – Default settings

Sets up factory default parameter setting.
  defa 0: setup all parameters concerning data port
  defa 1: setup all parameters including ISDN protocol and msn settings.

dhtc – highest 2-way channel (X.25 D channel)

Highest switched virtual logical channel for incoming and outgoing X.25 connections.
  dhtc = {1...4095}, default: 1

dltc – lowest 2-way channel (X.25 D channel)

Lowest switched virtual logical channel for incoming and outgoing X.25 connections.
  dltc = {1...4095}, default: 1

dte – B channel link address

Selects the Layer 2 link addresses for ISDN B channel. Only valid for protocols that are 
HDLC based  (X.75, LAPB).
  0  Calling side reacts as DTE, called side reacts as DCE (default, X.75 standard)
  1  TA reacts as DTE (own adr = 01)
  3  TA reacts as DCE (own adr = 03)
Note: The value will be changed by setting the B channel protocol (prot).

flc – Flow control

Flow control to DTE
  0:  No flow control
  3:  Hardware flow control RTS/CTS (default)
  4:  Software flow control XON/XOFF 
  5 :   Hardware flow control RTS/CTS in data mode and command mode
For further information see also chapter 4.3 Serial status lines

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ftei – tei value point to point, fixed tei

Reserved functionality, Point to Point mode only:
Value of the terminal equipment identifier for fixed tei connections. This value is set to 0 
per default and should not be changed.

0..63 tei value as defined will be used (default: 0)
  127  automatic tei procedure will be used

Note:   Changing the type of ISDN access by setting the parameter "ptp" will automati-

cally change the parameter "ftei". These values become active after sending "save" 
command and a reset of the TA.

fwload – load new firmware

This commands loads new firmware into the TA without starting the new firmware.  
For transferring the firmware file  XMODEM1K protocol is used.
The firmware will be stored into the upper unused part of the flash memory.  
While uploading the following checks will be performed:

  • That the overall firmware checksum is correct

  •  The firmware type written in the module header of the firmware must be  

compatible with the hardware- and allowed firmware type (stored inside the 
Bootloader).

fwstart – start new firmware

This command starts new firmware previously stored within the TA.
The firmware stored in the upper part of the flash memory will be loaded into the  
executable part of the FlashProm and started, if the following conditions are met:

  •  The overall firmware checksum must be correct.

  •  The firmware type written in the module header of the firmware must be 

compatible with the hardware- and allowed firmware type (stored inside the 

Bootloader).
Starting includes a hardware reset of the TA.
Note:   If new functionality has been added, your last stored configuration may be lost.

htc – highest 2-way channel (X.25 B channel)

Highest switched virtual logical channel for incoming and outgoing X.25 connections.
  htc = {1...4095}, default: 1

hlc – Higher layer compability

Higher layer compatibility for outgoing call.
  (see Note 2 page 81)

help

Displays help texts for all commands

idle – Idle data timeout

Timer to disconnect the ISDN B channel connection after inactivity.
  0:  inactive (default)

  1..n:  delay time to disconnect , n=1 to 255. (10..2550 s).

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iinit – ISDN initialisation after power ON

Defines the behavior of the TA after Reset. If set to 1 the ISDN interface will automati­cally be activated after Power ON. As a result, the LED L1 will show the correct state 
regarding the ISDN line.
If set to 0, the TA stays passive to the ISDN line after power On, the LED L1 will stay 
blinking until the first successful communication through the ISDN line takes place.
  iinit 0:   no activation after Power On
  iinit 1:   Automatic activation after Power On
  iinit 2:   Automatic activation every time the S-Bus is deactivated
  iinit 3:   Automatic Tei-Request after Power On
  iinit 4:   Automatic Tei-Request and LAPD link setup after Power On
  iinit 5:    Automatic Tei-Request and LAPD link setup and RESTART after

Power On (ISDN point to point mode, all connections will be 
cleared)

  iinit 6:   Automatic Tei-Request and LAPD link setup permanently

isdn – ISDN D channel protocol

Selects ISDN D channel protocol
  0:  DSS1 (Euro-ISDN) (default)
  12:  leased line with usage of just B channel B1.
  13:  leased line with usage of just B channel B2.

k – Windowsize

Layer-2 protocol: windowsize (default:7). k = {1..7}
Value will be automatically changed with changing B channel protocol.

lcgr – Logical group number X.25

Logical group number for X.25 packet layer protocol.
  lcgr = {0..255}, default: 0

llc – Low layer compatibility

Low layer compatibility for outgoing calls (Hex bytes)
  (see note 2 and 3, page 81)

load – Load stored parameter setting

All parameters stored in non volatile RAM will be loaded.

loadsw – load DIP-switches parameter setting

Parameters entered via the DIP-switches will be loaded and active in the same manner as 
at power up.

msni –  Multiple Subscriber Number for incoming calls

Own MSN (Multiple Subscriber Number) for incoming calls.
  msni *  global msn, all incoming calls will be accepted. (default)
  msni nn  set "msni" to nn = string of digits (max length = 22)
  msni -  no acceptance of incoming calls
  msni  show current setting of "msni".

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msno – Multiple Subscriber Number for outgoing calls

Own MSN (Multiple Subscriber Number) for outgoing calls.
  msno -  no "msn" value will be used for outgoing calls. (default)
  msno nn  set "msno" to nn = string of digits (max length = 22)
  msno  show current setting of "msno".

nui – Nui and password

Setup nui and password sent with an outgoing X.25 call packet.
nui and password has to be entered as ASCII characters.
(X.25 B channel and X.31 D channel only).

prot – B channel protocol

Transmission protocol for data transfer

 -0:   V.110 asynchronous  (Mainly for access to GSM network)  

 -3:  HDLC async to sync    (Async PPP to sync PPP, conversion single link i.e. for Internet / PPP 

 -4:  HDLC transparent  (octets are packed into HDLC frames)

 -5:  Byte transparent  (raw B channel data)

10:  X.75- SLP  (For file and data transfer i.e. for BBS access, (default)

13:  V.120  For file and data transfer i.e.AOL/CompuServe access

20:  X.31 B channel   (X.25 B channel, access to X.25 packet switched network over  

21:  X.31 D channel   (X.25 D channel, access to X25 packet switched network over  

31:  ML-PPP    (ML-PPP, Async to sync PPP conversion in Multilink PPP mode,  

dial-up network access)

B-channel)

D-channel

for internet access)

prty – Asynchronous parity

Parity of asynchronous character (default: no parity)
  0:   No parity.
  1:   Even parity.
  2:   Odd parity

ptp – ISDN interface type

Select type of ISDN interface:
  0:   select multipoint mode (to connect ISDN terminals, (default)
  1:   select point to point mode (to connect ISDN switching systems)

pvc – X.25 connections permanent virtual circuits usage

Enable usage of permanent virtual connections instead of switched logical
connections. X.25 channel number 0 will be used.
  pvc = 1:  enable (default 0)

quit, exit – Activate parameter changes

Activates the actual parameter settings and leave the configurator
(without storing the parameter in non volatile memory).

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racctab – Access table setup for remote access

Using these commands you can setup a table, to allow only dedicated callers for remote 
management to get a connection to the IDW-90.

racctabx  nn   set entry number x to ISDN number nn
  racctabx  -  clear entry number x
  racctabx  *  Allow all incoming calls to be accepted
  racctabx    show entry number x
  racctab    Show all entries

Note:  for a detailed description see page 47

reset – Reset IDW-90

Resets the whole functionality of the IDW-90 by forcing a hardware reset. 

ridle – idle data timeout for remote connection

Timer to disconnect the remote connection after inactivity (sec).
  0:  inactive

1..n:  delay time to disconnect in seconds (1..255).
  60:   60 seconds (default)

ringtimer – Delay of RING messages

Delaytime between two RING messages, if S0 register is set not equal to 1, value in  
100 ms. Default 50 (5 seconds).

rmsg – Message for remote access

Controls whether a message for establishment or??disconnect message on the remote 
port, If display enabled “rmon” for established and “rmoff” for disconnected remote con­figuration access is sent out on the remote local port. ??????????
  0:  display no messages (default)
  1:  display messages

rmsn – Multiple Subscriber Number for remote

MSN (Multiple Subscriber Number) for remote configuration
  *: no specific MSN, all incoming calls accepted

rmsn *  global msn, all incoming remote calls will be accepted. (default)
  rmsn nn  set "rmsn" to nn = string of digits (max length = 22)
  rmsn -  no acceptance of incoming remote calls
  rmsn  show current setting of "rmsn".

rstmsg – Startup message

Startup message:
"+++ Press <CR>,  <CR>, <ESC>, <ESC> to enter IDW-90+Configurator +++"
after start up can be displayed with a fixed speed of 9600 bps, 8 data bits, no parity, 
1 stop bit.
  0:  inactive, no startup message will be sent after power on. (default)
  1:  active, startup message will be sent after power on

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rsttim – Startup timer

Startup delay timer after reset. Within this period the configuration can be entered after 
reset.
  1 .. 255 :  reset phase in 100 milliseconds, default: 40 (4 seconds)

rsub – Subaddress for remote access

SUB (sub address) for remote configuration
  *: no specific SUB, all incoming calls accepted (default).

rsub *  global SUB, all incoming remote calls will be accepted, (default).
  rsub nn  set "rsub" to nn = string of digits (max length = 22)
  rsub -  no acceptance of incoming remote calls
  rsub  show current setting of "rsub".

Note:  The remote connection needs to get an incoming call with a special LLC value "88 

90 21 58 00 BB" which is automatically set in the additional "e" of the dial com­mand from the connecting IDW-90.

save – Store parameter changes

Stores the actual set of parameters in non volatile memory.

sbits – Number of stopbits.
Sets the number of stopbits 1 or 2, (1 default).

sertrc – serial link trace

Controls the part of serial output to the trace module.
  bit 0 :  enable serial data to the trace log.
  bit 1 :  enable serial status lines to the trace log.
   available values:  0, 1, 2, 3
 (Default 3, enable serial data and status lines).

show – Show parameters

Displays the actual set of parameters, see &V1.

showall – Show all parameters

Displays all the accessable parameters

status – Status of serial line and ISDN

Returns the status of the serial line and ISDN channels.
Example: current status information IDW-90

Current status information IDW-90
serial line: DTR:on, RTS:on, DSR:on, CTS:on, DCD:off, RI:off
ISDN: L1:down
Dch: Prot:DSS1 State:disconnected, CdPN:, CgPN:, prev error: 0
Bch: Prot:X.75 SLP State:disconnected, CdPN:, CgPN:

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subi – sub address for incoming calls

Own SUB (sub address) for incoming calls.
  subi *  global subi, all incoming calls will be accepted, (default).
  subi nn  set "subi" to nn = string of digits (max length = 22).
  subi -  no acceptance of incoming calls.
  subi  show current setting of "subi".

subo – sub address for outgoing calls

Own SUB (sub address) for outgoing calls.
  subo nn  set "subo" to nn = string of digits (max length = 22).
  subo -  no use of “SUB” value for outgoing calls, (default).
  subo  show current setting of "subo".

swstatus – TA-DIP Switches status

Returns the status of the TA-Configuration switches.
This command has the same function and result as ATI7 command.
  See ATI7 command for presented result.

tdi – Timer delay incoming call

Delay time between receiving ISDN incoming data call and signalling via RING 
or CONNECT message.
  0:  no delay (default)

  1..n:  delay time in 50 ms ticks.   VAD är MAX n

tei – TEI value

X.31 D channel only:
Terminal equipment identifier. This value must be identical to the tei of your basic rate 
access, will be defined by your ISDN supplier.
  tei=1 (default)

trcnnn – commands for internal trace

The usage of the commands for internal trace are described in chapter 9.

txfwd – Timer for data forwarding

If no character is entered within the defined period, the received data will be transmitted 
to the ISDN using the selected transmission protocol. (comparable to the functionality of 
X.29 parameter 2, data forwarding timer)
  0:  minimum delay time (appr. 10 ms)

  1..n:  delay time in 50 ms ticks. (default: 1)

Note: Valid for AT command set and X.25 B channel or X.25 D channel only.

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t320 – Timer delay ISDN disconnect

Delay time between the clear message of the last X.25 connection and an automatic 
ISDN disconnect. Only valid for X.25 B channel.
  0:  immediate ISDN disconnect (default)

1..n:  delay time in seconds (1..254).
  255:  immediate ISDN disconnect
Note:  The released X.25 connection will be signalled due to the selected mode

(via response “NO CARRIER”, CLR xxx or DCD goes inactive). The  unreleased 
ISDN connection is not signalled, also the released ISDN connection has no signal.

v110llc – Usage of LLC for V.110 connections

If set the LLC parameter will be used for incoming and outgoing V.110 connections.
  0:   LLC is ignored and not created 
  1:    Ougoing call: An LLC is sent deriving from the settings of the

TA incoming call: The received LLC is used to setup the  
parameters for the V.110 connection. (default).

v110flc – Usage of V.110 flowcontrol

0:  V.110 flowcontrol via xbits will be ignored. (default).
  1:  V.110 flowcontrol via xbits enabled

*wbrk – break and data packing

  0:    Break and data packing disabled. Break detected on the DTE side ignored. 

(default)

  1-255:   Break and data packing enabled . When a break is detected on the local  

DTE side the modem will send a break to the remote side.  
The length of the break is set in increments of 10ms according to this 
parameter (10 – 2550 ms). The parameter set the break length at the  
local modem.

When the “Break and data packing” is enabled data are packaged in frames before being 
transferred between the modems. Packing of data in frames enables the possibility to 
transfer break signals over the line independent of line protocol but will lower the 
transferee rate slightly. With that in mind the “Break and data packing” shall only be used 
when break handling over the line is necessary. 
Note! Modem in both ends must have the *wbrk enabled but doesn’t need to have the 
same parameter value.

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*wcb – callback security

The callback functionality makes the established link more secure. After an incoming call 
the adapter will make a callback to either a preconfigured number or to the incoming 
number. The callback can be protected by a password. The unit can also be configured  
for a secure access without callback.
If the password is enabled, the calling part will be prompted for the password directly 
after connection. When the password is entered correctly, the adapter will disconnect 
the current link and make a callback after a preconfigured number of seconds (configura­tor command: capa [default 3]). 
If the unit is configured as ”secure access”, it will allow data only after the password is 
correctly entered.
After 3 retries of entering wrong password or after 60 seconds, the link will be discon­nected and the callback/secure access aborted.
The number to callback must be entered in the *wcbtab number table  
(*wcbtab1, *wcbtab 2 or *wcbtab 3).
The passwords is stored in: *wcbpwd1, *wcbpwd2 or *wcbpwd3.
When making a callback to a number stored in *wcbtab, the password in *wcbpwd1 is 
connected to the number in *wcbtab1 (and *wcbpwd2 to *wcbtab2 and *wcbpwd3 to 
*wcbtab3)
A callback to an analogue modem can be done with ID90-V90 and by storing an ’#’ 
before the number in catab. (see also the catab command in this manual)
For an even more secure connection the *wcb can be combined with the acctab  
command.

Callback control:
  0:  callback disabled (default)
  1:   callback enabled, No password needed, callback number only in position1 in

*wcbtab (wcbtab1)

2:   callback enabled, No password needed, callback to incoming number
  3:   access security enabled, Password in one or more positions in  wcbpwdx

(x= 1, 2 or 3). If a correct password is detected the connection is opened  

without any callback

  4:   callback enabled, Password in one or more positions in *wcbpwdx  

(x= 1, 2 or 3), callback to number in wcbtab, (*wcbpwd1 corresponds  

to *wcbtab1...)

  5:   callback enabled, Password in one or more positions in *wcbpwdx  

(x= 1, 2 or 3), callback to incoming number

  6:   callback enabled, Password in one or more positions in *wcbpwdx  

(x= 1, 2 or 3), callback to number that is entered after password check is OK.

see also the following commands: *wcbtab, *wcbpwd, capa, acctab

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*wcbpwd – callback/secure access password

This command is used to store the password used in the callback and the secure access 
functionality.
Three different passwords can be stored.

Example:
  *wcbpwd1=qwerty
  *wcbpwd2=asdfgh
  *wcbpwd3=zxcvbnm
  *wcbpwd3=- Delete the password
The password may contain any writeable character. 
The maximum number of characters is 20.
see also the following commands: *wcbtab, *wcb, capa

*wcbtab – Secure callback table

This command is used to store the numbers used in the callback and the secure access 
functionality.
Three different numbers can be stored.
The character # is used as prefix to signal that the call will use an analogue connection 
  wcbtabx  nn  set entry number x to receiver number nn.
  wcbtabx  -  clear entry number x
  wcbtabx    show entry number x
  wcbtab    show all entries

Maximum number of entries = 3
Maximum length of  number = 20 digits.

In the example below, entry 1 tells IDW-90 to make a call using the analogue modem, 
while entry 2 and 3 are for making ISDN –ISDN connections.

Example:
  wcbtab1 #00461661200
  wcbtab2 004616480130
  wcbtab3 0123987652
see also the following commands: *wcbpwd, *wcb, capa

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*wdpp – data packing parameters

  Syntax:   *wdpp=<timeout>,  <package length> 

*wiod=?

  <timeout>   This timeout gives the time triggering a package transfer. The 

timeout specifies  in units of 10ms the maximum time between 
characters not triggering a package transfer. Legal values 1 to 9 
(10 to 90 ms), default 10 ms.

  <package length>   This value specifies the maximum number of characters in each 

package. An elapsed timeout overrides the length value and forces 
a package transfer. Legal values ranging from 1 to 255 characters. 
(default 255)

  Examples:   Set timeout = 30ms and package length = 128 characters 

*wdpp=3,128

OK
    Request current setting
    *wdpp?
    *wiod: 3,128

    OK

Request the format string
    *wdpp=?
    *wdpp: (1-9),(1-255)

    OK

  Result Codes:  OK 

    ERROR    Otherwise

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*wiod – General IO delete entry

This command deletes one or more  IO entries in the list.
  Syntax:   *wiod=<index>[,<stop_index>]

*wiod=?
   <index>  Index of first entry to delete
    [,<start,stop>]  Last entry to delete

  Examples:   Delete entry 2 

*wiod=2

    OK

     Delete entries 3,4,5,6,7 

*wiod=3,7

    OK

     Request the format string 

*wiod=? 

*wiod: (1-10)[,(1-10)]

    OK

Result Codes:  OK 

    ERROR  Otherwise

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*wiol – General IO list

This command is used to program the list of IO entries with parameters and data. 
The list can contain up to 10 entries
  Syntax: 
     Set up a service entry:

*WIOL=<entry>, <service>, <flag>, <timeout>, <priority>, <data1>,

<data2>, <data3>, <data4>, <data5>, <data6>

     Request the format string: 

*WIOL=? 
*WIOL : (1-10), (0-7),(0-3), (0-255), (0-1), (0-20 char),  
(0-160 char), (0-20 char), (0-2), (0-8 char), (0-20 char)

     List all table entries. Listing will pause every 3rd entry and wait 

for any key hit to continue. ESC will terminate.

     *WIOL? 

List entry 3. 
*WIOL=3?

  <entry>  IO entry number, up to 10 entries can be defined.

  <service>  IO entry service 

0=NONE  No service defined for this entry

1=DIAL  Makes a connection to the number defined in <data1>.

2=SMS   <data1> Destination number of the SMS 

3=TEXT   Make a connection to number defined in <data1> and transfer text defined in 

4=EMAIL  Reserved for future use, service not implemented.

5=OUT   Make a connection to the number defined in <data1> and set/pulse the remote  

6=CMD  AT command specified by <data1> is executed when the entry is triggered.

7=TRANS   Makes a connection to number defined by <data1>, IO is transferred transparently 

<data2> SMS-message 
<data3> SMS service provider number 
<data4> SMS protocol type (0=NONE, 1=UCP, 2=TAP) 
<data5> Password if required by provider.

<data2>.

output according to pattern defined in string defined in <data2>.   
The connection is terminated after the pattern is transferred.

between the two units. The transparent mode must be ended by a timeout.

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  <flag>   Defines whether the establishment of service shall be retried, the 

time between retries is controlled by register S7.

0=NO  No retry, tries once to perform requested action

1=RETRY  Retry infinitely to establish service according to current table entry.

2=RETRY_3  Do 1 try and max 3 retries.

3=NEXT_OK   If current service ends with OK the service specified by next table entry  

4=NEXT_ERR   The unit will execute service specified by next table entry if fail to  

will be triggered. 
If fail to perform/establish  the current entry service the unit will return to idle.

perform/establish current service. 
If service according to current table entry terminates normally the unit will 
return to idle and wait for any new event trigger.

  <timeout>   Timeout is used in Dial and Transparent IO. The timeout is designed 

as an inactivity timer and will be retriggered for each Data / IO 
transfer. The timeout is the only normal way to terminate Dial and 
Transparent IO, see Table 5 for reference of state after termination 
by timeout. 
Setting a timeout for any other service than transparent IO will not 
cause any failure but will not have any function.

<timeout>  Function of <timeout>

= 0  The service will not be terminated

= 1 – 255   The timeout is specified in units of 10s. 

Valid values 1 – 255 *10 s  (10s – 2550s)

  <priority>  Priority of the service specified.

<priority>  Function of <priority>

= 0   An existing connection will not be terminated. 

Retries will be made according to setting of <flag>, time between retries  
is set by register S7.

= 1   The current connection will be terminated before the connection specified  

by service is established.

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  <data1>   The interpretation of this field depends on the service specified for 

the entry. The field accepts 0 – 20 characters.

Service  Function of  <data1>

DIAL  Number to connect to.

SMS  Phone number of SMS receiver.

TEXT   Phone number of TEXT receiver, if left empty the TEXT is sent out on the local 

EMAIL  Reserved.

OUT   Phone number of the modem where the output shall be set. If <data1>,   

CMD   AT command string to be executed when the entry is triggered, can be used to 

TRANS   Phone number of the modem to which the transparent IO should occur.  

  <data1>  Makes a connection to the number defined and start 

  <data1>=empty  Transparent IO transfer will use an existing data connection.

DTE connection.

is empty the transfer will be to the local digital output.

modify the trigger condition. 

For dependencies of other parameters and line type. See Table 5.

=number  Transparent IO transfer between the two units. 

  <data2>   Interpretation of field <data2> is also service dependent the size  

is 0 – 160 characters.

Service  Parameter <data2>

DIAL  Not used

SMS  The SMS message

TEXT  Text message

EMAIL  E-mail message

OUT  A sequence of “101.. “ to be transferred to the addressed output

CMD  Not used

TRANS  Not used

  <data3>  Field <data3> is only used for SMS and EMAIL service. 

Service  Parameter <data3>

SMS  SMS provider number.

EMAIL  Reserved for ISP number

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  <data4>  Field <data4> is only used for SMS and EMAIL service. 

Service  Parameter <data4>

SMS   SMS protocol 

EMAIL  Reserved for mail protocol

0 = No protocol, 1= UDP, 2 = TAP

  <data5>  Field <data5> is only used for SMS and EMAIL service. 

Service  Parameter <data5>

SMS  Password for access to SMS provider

EMAIL  Reserved for password to mail server

  <data6>  Field <data6> is only used for EMAIL service. 

Service  Parameter <data6>

EMAIL  Reserved for username to mail server

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Table 5 Dial and Transparent IO connection types

Connected  Data 1  prio  Line Type

No  Empty  No  LL  Illegal.

No  Empty  Yes  LL  Illegal.

No  Number  No  LL  Illegal.

No  Number  Yes  LL  Illegal.

Yes  Empty  No  LL   Normal Transparent IO over leased line.  

Yes  Empty  Yes  LL   Normal Transparent IO over leased line.  

Yes  Number  No  LL   Normal Transparent IO over leased line,  

Yes  Number  Yes  LL   Normal Transparent IO over leased line,  

No  Empty  No  CS  Error, try to establish service failed.

No  Empty  Yes  CS  Error.

No  Number  No  CS  Normal Transparent IO over Circuit switched. 
line

No  Number  Yes  CS  Normal Transparent IO over Circuit switched. 
line

Yes  Empty  No  CS   Use current connection for I/O transfer. 

Yes  Empty  Yes  CS   Use current connection for I/O transfer.  

Yes  Number  No  CS   Due to that line is busy and no priority set  

Yes  Number  Yes  CS  Disconnect and dial Number.

See Note 1

See Note 1

number discard. See Note 1

number discard. See Note 1

The Empty data 1 will override priority.  
See Note 1

See Note 1

the modem will retry connection according  
to <flag>.

LL = Leased line PSTN or ISDN

CS = Circuit switched PSTN, ISDN or GSM

Note 1   The existing data connection will be paused during transparent IO transfer.  

The modem will use the flow control specified by flow control command. If no 
flow control set DTE data will be discarded during the Transparent IO transfer. 
When the transparent IO transfer is terminated by timeout the connection will 
revert to data-mode and activate CTS / sending XON.

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  Example 1:   Define entry #1 for SMS service with 3 retries, priority, receiver  

of SMS 016480251, message “Hello Westermo”, provider 
00491712521002, TAP protocol, password PG1

    *WIOL =1,2,2,0,1,0164251,Hello Westermo,00491712521002,2,PG1

    OK

  Example 2:   Define entry #4 for Transparent IO service with retry for ever, prior-

ity, timeout  400s, remote modem number  016480250 

    *WIOL =4,7,1,40,1,016480250

    OK

  Exampel 3:   List the entry table: 

*WIOL?

     1_Service= SMS 

1_Flag= RETRY_3 
1_Timeout=0 
1_Priority=YES 
1_Data1=016480251 
1_Data2= Hello Westermo 
1_Data3=00491712521002 
1_Data4=TAP 
1_Data5=PG1 
1_Data6=  
2_Service= DIAL 
2_Flag=RETRY 
2_Timeout=0 
2_Priority=NO 
2_Data1=12345 
2_Data2=  
2_Data3= 
2_Data4= 
2_Data5= 
2_Data6=  
. 
. 
10_Data5= 
10_Data6=

    OK

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67

     List entry 4 

*WIOL=4?

     4_Service=TRANS 

4_Flag=RETRY 
4_Timeout=040 
4_Priority=YE 
4_Data1=016428250 
4_Data2=  
4_Data3= 
4_Data4= 
4_Data5= 
4_Data6=

  Exampel 4:   Read the format string. 

*WIOL=? 
*WIOL : (1-10), (0-7), (0-3), (0-255), (0-1), (0-20 char), (0-160 char),  
(0-20 char), (0-2), (0-8 char), (0-20 char)

    *WIOL= <entry>, <service>, <flag>, <timeout>, <priority>, <data1>,

<data2>, <data3>, <data4>, <data5>, <data6>

     Request the format string: 

*WIOL=?

    *WIOL :  (1-10), (0-7), (0-3), (0-255), (0-1), (0-20 char), (0-160 char), 

(0-20 char), (0-2), (0-8 char), (0-20 char)

    OK

Result Codes:  OK
    ERROR  Otherwise

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*wiop – General IO parameters

This command set the IO parameters.
  Syntax:   *wiop=<tmin>, <tmax>, <type>, <trig>, <norm>

*wiop=? 
*wiop?

  <tmin>   Min trig pulse time in 10 ms increments [1-255]. 

This parameter sets the minimum time the pulse must be active.  
A pulse shorter than this time will be skipped.

  <tmax>   Max trig pulse time in 10 ms increments [1-255] 

Sets the maximum active width of a pulse, if pulse is longer  
the pulse will be skipped.  
The number of pulses will be calculated when the time  
between pulses is longer than 3 times tmin.

  <type>  Trig source and type 

0=NO  Trigger not used

1=LEVEL   Trigger source is the Digital input Level or edge sensitive  

2=PULSE  Pulsed trigger used 

3=DCD  Trigger internally coupled to reflect the DCD signal

4=DTR  Trigger internally coupled to reflect the DTR signal

trigger

  <trig>  Trigger level 

0=NO  Trigger not used

1=HIGH  Defines that a High level triggers the service   

2=LOW  Defines that a Low level triggers the service

3=POS  A positive edge triggers the service.

4=NEG  A negative edge triggers the service.

  <norm>   Normal inactivated state of the output as well as the source  

controlling the output.

0=NO  Output not used

1=IO operation  Controlled by remote IO Transparent or Out 

2   Reserved

3=DCD   Output will be controlled by DCD. An active DCD  

will activate the output. 

4=DTR   Output will be controlled by DTR. An active DTR  

will activate the output.

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69

  Examples:   Set input min pulse width to 500ms max pulse width to 1s, triggered 

on high level and output to follow DCD

    *wiop=50,100,1,1,3

    OK

     Change input type to be pulse triggered 

*wiop=,,2,,

    OK

*wiop?
    *wiop : TMIN=50, TMAX= 100, TYPE=2, TRIG=1, NORM=3

    OK

Result Codes:  OK
    ERROR  Otherwise:

*wiot – General IO test

This command executes the specified entry as if it was triggered by the normal trigger 
condition.
  Syntax:   *wiot =<entry_num>[,<IO_state>]

*wiot =?

   <entry_num>   IO entry index number  (0 – 10) 1 – 10 selects 

the entry at the corresponding index in the table. 
Selecting entry_num =0 selects the local output,

the state of the output is selected with parameter 
IO_state

    [,<IO_state >]   The state to set the local output ( 0 or 1) when 

entry_num is set to 0.

  Examples:  *wiot =2  Trigger and execute entry 2 in the table

    OK

     *wiot =? 

*wiot: (0-10)[,(1-1)]

    OK

Result Codes:  OK
    ERROR  Otherwise

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* wrap – Remote access password

This command sets the remote access password.
  Syntax:   wrap =<password>  Set the password
    wrap =?  Request formatstring
    wrap?  Show current value
   *wrap -  no remote password is set

  <password>   Remote access password (6-20 char:s) setting  

password to – will delete the previous password.

  Examples:  *wrap=QwErTy

    OK

*wrap=?
    *wrap : (6-20 char)

    OK

Result Codes:  OK
    ERROR  Otherwise

w – B channel windowsize L3

B channel layer 3 protocol: windowsize (default:2). w = {1..7}
Value will be automatically changed when changing B channel protocol.

xnr – Own X.25 address

Setup an origination X.25 address.
Only necessary, if not supported from the network (X.31B channel only)

<cmd>? – more information for one command

Displays the allowed values for one selected command <cmd>

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71

?? – help

Displays help texts for all commands

Notes:

(Note 1)   After issuing one of these parameters, execute the “save” com-

mand to store the configuration in non volatile memory. To acti­vate and use the new setting you have to run the “reset” com­mand.

(Note 2)   Command syntax for setting hlc, llc and bc 

An empty parameter has to be entered by "-". 
Example:  Deleting of LLC-value:  LLC -<cr> 
Entering a new LLC:    LLC 8890<cr>

(Note 3)   Different modes for V.110 baudrate adaption

- Outgoing call:
  brn # 0:   ISDN message SETUP will be created with or without LLC(brn)

depending on the setting of dial.v110llc;

     The B channel (V.110 baudrate) will use the baudrate set by brn 

(independent of br or recognized local baudrate)

  brn = 0:   "adaptive": same mechanism as brn # 0; the V.110 baud rate will 

be created by br rsp. the recognized local baud rate.

- Incoming call:
  brn # 0 :   no LLC received: accept incoming call, use in B channel brn for

V.110 baudrate.
    LLC received compliant to brn: accept incoming call
     LLC received not equal to brn: Reject incoming call:

DISCONNECT (cause = incompatible destination).
  brn = 0 :  "adaptive":
     no LLC received: accept incoming call, use in B channel br rsp. the

recognized local baud rate for V.110 baud rate.

     LLC received: accept incoming call, use in B channel the baud rate 

derived from the LLC as V.110 baud rate.

     The usage of the LLC is controlled by the IDW-90+Configurator 

command dial.v110llc.

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6. Software update

The IDW-90 uses a Flash-EPROM for software updates to store the operational software. 
This software can be updated from a local connected PC via the COM port or via a 
remote configuration connection. Carry out the following steps to update the IDW-90:
  …   Start a terminal emulation on your PC with the capability to run an X-MODEM

file transfer (i.e. HyperTerminal).

  …   Enter the AT command "AT**FLASH" to start the update procedure. 

The IDW-90  will send the message "Erasing flash EPROM now. Please wait...".

  …   After erasing of the Flash-EPROM the TA sends out the request for the down-

load procedure with the 1kX-MODEM protocol:  
"Start your XMODEM transfer now (Ctrl-X aborts) ..."

  …   Start the 1kX-MODEM file transfer (send file or upload) by selecting the Transfer 

/ Send File menu point in your terminal emulation and select the new software. 
The internal timeout of each X-Modem block is set to 10 seconds.

  …   After completion you will get  information on whether the software update 

ended successfully or erroneous. 

• Positive result:  • "Loading procedure ended successfully". 

• Negative reason:  • "Checksum error." (for example) 

• Negative result:  • "Flash EPROM software is probably not executable".
  …  The loaded new firmware will automatically start after a software reset.
  …   (Give the IDW-90 about 15 seconds to activate the new software.)
  …   Due to new functionality the last stored configuration setting may be lost,

please check before using.

Note:   Due to an error it may be that no firmware is active within the TA. This will be 

indicated by flashing of the LEDs (Bootloader active). To store a new firmware 
correctly you have to enter the command "AT**FLASH" again and load a firmware 
using the XMODEM protocol as described above. This boot loader supports only 
AT**cmd with fixed baudrate of 115.200 Baud.

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7. Diagnostic and error messages

For the diagnosis of erroneous situations the following functionality is supported.
Check first the behaviour of LED displays, if an ISDN connection can not be established. 
Refer to list of LED displays.

7.1 Error messages from AT command set

In AT command mode, error cause display  (does not belong to the AT command stand­ard) can be turned on by issuing the command ATW1. The shown error causes use the 
coding defined by the CAPI definition. ISDN error causes from the ISDN network are 
always coded as 34xxH, where xx represents the hexadecimal version of the ISDN error 
cause (see page 84). All other causes are CAPI error causes (see page 91).

Error cause display:

  <xx> = ISDN release (error) cause, hexadecimal

Example:  Tx data  Rx data
    ATW1

OK
  ATD12345
      NO CARRIER <34A2>

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7.2 ISDN causes and their explanation (DSS1)

Table 6  ISDN causes and their explanation (DSS1)

ISDN  Explanation  Translation  Translation  
  Cause Code    to AT result   to X.25  
      code  cause +

Number Hex

        diagnostic

  1  0x81  Unallocated (unassigned) number   3  13, 78

  2  0x82  No route to transit network   3  0D, 78

  3  0x83  No route to destination   3  0D, 78

  6  0x86  Channel unacceptable   6  05, 78

7  0x87  Call awarded and being delivered   6  05, 78 
      in an established channel

  16  0x90  Normal clearing   3  00, 78

  17  0x91  User busy   7  01, 78

  18  0x92  No user responding   8  09, 78

  19  0x93  No answer from user (user alerted)   8  09, 78

  20  0x94  Subscriber absent (device off)   8  09, 78

  21  0x95  Call rejected   8  21, 78

  22  0x96  Number changed   3  0D, 78

  26  0x9A  Non selected user clearing   3  00, 78

  27  0x9B  Destination out of order   8  09, 78

28  0x9C  Invalid number format   3  13, 78 
      (incomplete number)

  29  0x9D  Facility rejected   3  13, 78

  30  0x9E  Response to STATUS ENQUIRY   3  13, 78

  31  0x9F  Normal disconnect unspecified  3  00, 78

  34  0xA2  No circuit/channel available   7  01, 78

  38  0xA6  ISDN network out of order   6  05, 78

  41  0xA9  Temporary failure   6  05, 78

  42  0xAA  Switching equipment congestion  6  05, 78

  43  0xAB  Access information discarded   6  05, 78

  44  0xAC  Requested circuit/channel not available   6  05, 78

  46  0xAE  Precedence call blocked   6  05, 78

  47  0xAF  Resource unavailable unspecified  6  05, 78

  49  0xB1  Quality of service unavailable   3  13, 78

  50  0xB2  Requested facility not subscribed  3  13, 78

  53  0xB5  Outgoing calls barred within CUG  3  13, 78

  55  0xB7  Incoming calls barred within CUG  3  13, 78

  57  0xB9  Bearer capability not authorized  3  13, 78

  58  0xBA  Bearer capability not presently available  3  13, 78

  63  0xBF  Service or option not available unspecified  3  13, 78

  65  0xC1  Bearer capability not implemented   3  13, 78

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Table 6 cont.

ISDN  Explanation  Translation  Translation  
  Cause Code    to AT result   to X.25  
      code  cause +

Number Hex

        diagnostic

  66  0xC2  Channel type not implemented   3  13, 78

  69  0xC5  Requested facility not implemented   3  13, 78

70  0xC6  Only restricted digital information bearer   3  13, 78 
      capability is available

79  0xCF  Service or option not implemented   3  13, 78 
      unspecified

  81  0xD1  Invalid call reference value   3  21, 78

  82  0xD2  Identified channel does not exist   3  21, 78

83  0xD3  A suspended call exists but this call   3  21, 78 
      identity does not

  84  0xD4  Call identity in use   3  21, 78

  85  0xD5  No call suspended   3  21, 78

  86  0xD6  Call having the requested call identity   3  21, 78 

      has been cleared    

  87  0xD7  User not member of CUG   3  21, 78

  88  0xD8  Incompatible destination   3  21, 78

  90  0xDA  Non-existent CUG   3  21, 78

  91  0xDB  Invalid transit network selection   3  21, 78

  95  0xDF  Invalid message unspecified   3  21, 78

  96  0xE0  Mandatory information element missing   3  21, 78

97  0xE1  Message type non-existent    3  21, 78 
      or not implemented

98  0xE2  Message not compatible with call state    3  21, 78 
      or message type

99  0xE3  Information element parameter    3  21, 78 
      non-existent or not

  100  0xE4  Invalid information element contents   3  21, 78

  101  0xE5  Message not compatible with call state   3  21, 78

  102  0xE6  Recovery on timer expiry   3  21, 78

103  0xE7  Parameter non-existent or not    3  21, 78 
      implemented passed on

  111  0xEF  Protocol error unspecified   6  05, 78

  127  0xFF  Network interworking error unspecified   6  05, 78

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7.3 X.25 diagnostic codes

Table 7  X.25 diagnostic codes

No.  Restart-   Clear-   Reset-   Diag-   Meaning 
  hex  ind.  ind.  ind.  nostics
  00  X  X  X  –  No additional information
  01  –  –  X  –  Invalid P (S)
  02  –  –  X  –  Invalid P (R)
  10  –  –  –  X  Packet type invalid
  11  X  –  PVC  X  Packet type invalid for state r1
  12  X  –  PVC  X  Packet type invalid for state r2
  13  –  –  –  –  Packet type invalid for state r3
  14  –  X  –  –  Packet type invalid for state p1
  15  –  X  –  –  Packet type invalid for state p2
  16  –  X  –  –  Packet type invalid for state p3
  17  –  X  –  –  Packet type invalid for state p4
  18  –  X  –  –  Packet type invalid for state p5
  19  –  X  –  –  Packet type invalid for state p6
  1A  –  X  –  –  Packet type invalid for state p7
  1B  –  –  X  –  Packet type invalid for state d1
  1C  –  –  X  –  Packet type invalid for state d2
  1D  –  –  –  –  Packet type invalid for state d3
  20  –  –  –  –  Packet not allowed
  21  –  X  PVC  –  Unidentifiable packet
  22  –  X  –  –  Call on one-way logical channel
  23  –  –  PVC  –  Packet type invalid for state at PVC 
  24  –  X  –  X  Packet on unassigned logical channel
  25  –  –  X  –  Reject not subscribed to
  26  X  X  X  –  Packet too short
  27  X  X  X  –  Packet too long
  28  –  X  –  X  Invalid general format identifier
  29  –  X  X  X  Restart or registration packet »0«
  2A  –  X  –  –  Packet type not compatible with facility
  2B  –  –  X  –  Unauthorized interrupt conformation
  2C  –  –  X  –  Unauthorized interrupt
  2C  –  –  X  –  Unauthorized reject
  30  –  –  –  –  Time expired:
  31  –  X  –  –  • for incoming call
  32  –  –  –  X  • For clear indication
  33  –  X  PVC  –  • For reset indication
  34  X  –  –  X  • For restart indication
  35  X  –  –  X  • For call deflection
  40  –  X  –  –  Call set-up, call clearing or registration problem
  41  –  X  –  –  Facility/registration code not allowed
  42  –  X  –  –  Facility parameter not allowed
  43  –  X  –  –  Invalid called DTE address

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Table 7 cont.

No.  Restart-   Clear-   Reset-   Diag-   Meaning 
  hex  ind.  ind.  ind.  nostics
  44  –  X  –  X  Invalid calling DTE address
  45  –  X  –  –  Invalid facility/registration length
  46  –  X  –  –  Incoming call barred
  47  –  X  –  –  No logical channel available
  48  –  X  –  –  Call collision
  49  –  X  –  –   X.25: repeated facility request

X-75: missing transit DNIC
  4A  –  X  –  –  Non zero address length
  4B  –  X  –  –  Non zero facility length
  4C  –  X  –  –  Facility not provided when expected
  4D  –  X  –  –  Invalid CCITT-speciffied DTE-facility
  4E  –  X  –  –   max. number of call redirections or call

deflections exceeded
  51  X  X  X  –  Improper cause code from DTE
  52  –  X  X  –  Non aligned octet
  53  –  –  X  –  Inconsisstent Q bit setting
  54  –  X  –  –  NUI problem
  61  –  X  –  –  DNIC not accessable
  62  –  X  –  –  Unknown transition DNIC
  64  –  X.75  –  –  Wrong use of facility
  65  –  X  –  –  Erroneous length of Net-Indicator
  66  –  X  –  –  Length of Net-Indicator not equal zero
  67  –  –  X  –  Erroneous M-Bit
  71  –  X  X  –  Problem concerning remote net
  72  –  X  X  –  International net problem
  73  –  X  PVC  –  Transmission section out of operation
  74  –  X  PVC  –  International line engaged
  75  –  X  PVC  –  Error in the transit net
  76  –  X  –  –  Error in the destination net – invalid facility found
  78  –  X  –  –  Temporary routing problem
  79  –  X  –  –  Unknown called DNIC
  7A  –  X  X  –  Service
  80  –  –  X  –  Erroneous Q-Bit or
  80  –  X  X  –  No operation means available
  81  –  X  –  –  Single packet not agreed upon or
  81  –  X  X  –  Temporarily out of operation
  82  X  X  X  –  Cause-field not equal  00 (hex.) or
  82  –  X  X  –  Closed by service provider, e.g. DATEX-P
  83  –  X  PVC  –  Incompatible paket length
  84  –  –  X  –  Erroneous M-Bit
  85  –  X  –  –  Rejection of the connection request or 
  85  –  X  –  –  NUI-call no longer granted
  86  –  –  X  –  PVC-Access description erroneous

78

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Table 7 cont.

No.  Restart-   Clear-   Reset-   Diag-   Meaning 
  hex  ind.  ind.  ind.  nostics
  87  –  X  PVC  –  Clear by service provider, e.g. DATEX-P
  88  –  X  –  –  DNIC not accessable
  89  –  X  –  –  Reverse charging not agreed upon
  8A  –  X  –  –  Missing agreement
  8B  –  X  –  –  Missing number of calling station
  8C  –  X  –  –  Erroneous number of calling station
  8D  –  X  PVC  –  Transmission section interrupted
  8E  –  X  PVC  –  Transmission section out of operation
  8F  –  X  PVC  –  Time expired DATEX-P state P1
  90  X  –  –  –  Erroneous coding of cause
  91  –  X  –  –  Erroneous direct call
  92  –  X  X  –  Uncomplete octet found
  93  –  X.75  –  –  Facility valid
  94  –  X.75   –  –  Erroneous use of facility
  95  –  X.75  –  –  Erroneous address in packet »Call-Accepted«
  96  –  –  X  –  Invalid interrupt packet in subnet
  97  –  –  X  –  Invalid interrupt acknowledge in subnet
  98  –  X  –  –   Only single packet with limitation of response

entry permitted
  99  –  –  PVC  –  Incompatible PVC
  9A  –  X  –  –  Erroneous agreement of window size
  9B  –  X  –  –  Missing fields
  9C  –  X  –  –  Erroneous adress length
  9D  –  X  –  –  Erroneous length of facilities
  9E  –  X  –  –  Incomplete field
  9F  –  X  –  –  Incompatible transmission rate class
  A0  –  X  –  –  Group call number out of order
  A1  –  X  –  –  Group call number not accessable
  A2  –  X  –  –  Group call number temprarily out of order
  A3  –  X  –  –  Erroneous address
  A4  –  X  –  –  Erroneous sub address
  A5  –  X  –  –  Erroneous format of net facility
  A6  –  X  –  –  Length of net facility not equal 0
  A7  –  X  –  –  No user data
  A8  –  X  –  –  Missing indicator for national facility
  A9  –  X  –  –  Access to users of the same service blocked
  AA  –  X  –  –  Number temporarily not accessable
  AB  –  X  –  –   User recognition required in the packets

“Connection-Request” and “Call-Accepted”
  AC  –  X  –  –   Called subscriber has not agreed upon the facility

“Single Packet”

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Table 7 cont.

No.  Restart-   Clear-   Reset-   Diag-   Meaning 
  hex  ind.  ind.  ind.  nostics
  AD  –  X  –  –  Network internal Load-Request received *)
  AE  –  X  –  –  Network component error *)
  AF  –  X  –  –  Network failure of a virtual connection *)
  B0  –  X  –  –  Network internal restart request received *)
  B1  –  X  –  –  Erroneous number of called stations in the  
            packet »Call-Accepted«
  B2  –  X  –  –  Unknown network facility
  B5  –  X  –  –  X.32 dial access not available
  B6  –  X  –  –  X.32 dial access not available
  B7  –  –  X  –  Reserved
  C0  –  X  –  –  X.25 dial access: Service data error
  C1  –  X  –  –  X.25 dial access: Service data error
  C2  –  X  –  –  X.25 dial access: User data  erroneous
  C3  –  X  –  –  X.25 dial access: Procedural error
  C4  –  X  –  –  X.25 / X.32 dial access: Modem error
  C5  –  X  –  –  X.25 / X.32 dial access: Modem error
  C8  –  X  –  –  X.25 dial access: successful connection  
            establishment
  C9  –  X  –  –  X.25 dial access: dialling procedure running now
  FF  X  X  X  X  System error

Notes:  X  The diagnostic indication will be used by the above shown packet. 
  –   The diagnostic indication will not be used by the above showed packet.
  PVC   The above shown packet will use this diagnostic indication only with PVC

(Permanent Virtual Call).
  X.75  The diagnostic indication will be used with international connections.
  *)  Only valid for special network components (concentrator).

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7.3.1 X.25 causes in Reset packet

00  Triggered by DTE
  01  Out of operation (virtual connections only)
  03  Remote sequence error
  05  Local sequence error
  07  Temporary network disturbance
  09  Remote station ready  (virtual connections only)
  0F  Network ready  (virtual connections only)
  11  Incompatible destination

7.3.2 X.25 causes in Clear packet

Coding of the field “cause” in packet “Indicate-Cause”.
  00  DTE/CONF  Triggered by the remote DTE/DCE
  01  OCC  Remote DCE busy, dialed number busy/engaged
  03  INV  Facility requested not valid/supported
  05  NC  Temporary disturbance in network
  09  DER  Remote DTE doesn’t answer/out of operation
  0B  NA  Access not available
  0D  NP  No access with this dial number
  11  RPE  Remote procedural error, sequence error
  13  ERR  Local procedural error, sequence error 
  19  RNA  Reverse charging not accepted
  21  ID  Remote DTE/DCE incompatible
  29  FNA   Incompatible connection request; receipt of single

packet not agreed upon

7.3.3 X.25 causes in Restart packet

Coding of the field “Reason for Restart” in the packet “Indicate-Restart”.
  01  Local sequence error
  03  Temporary disturbance in the network
  07  Network ready

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8. CAPI causes and their explanation

Table 8 CAPI causes and their explanation

Coding of the CAPI cause in hexadecimal form

0000  No error

0001  NCPI ignored

0002  Flags ignored

0003  Alert already sent

1001  Too many applications

1002  Logical block size too small

1003  Buffer exceeds 64k

1004  Message buffer size too small

1005  Too many logical connections

1006  Reserved1

1007  Message could not be accepted

1008  Register OS Resource Error

100a  External Equipment not supported

100b  External Equipment only

1101  Bad application ID

1102  Illegal cmd or message length

1103  Message queue full

1104  Message queue empty

1105  Message lost

1106  Unknown notification

1107  Message not accepted

1108  OS Resource Error

1109  CAPI not installed

2001  Bad State

2002  Illegal Identifier

2003  Out of PLCI

2004  Out of NCCI

2005  Out of LISTEN

2006  Out of Fax Resources

2007  Illegal Message Parameters

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Table 8 CAPI causes and their explanation

Coding of the CAPI cause in hexadecimal form

3001  B1 protocol not supported

3002  B2 protocol not supported

3003  B3 protocol not supported

3004  B1 protocol param not supported

3005  B2 protocol param not supported

3006  B3 protocol param not supported

3007  B Prot combination not supported

3008  NCPI not supported

3009  Unknown CIP value

300a  Flags not supported

300b  Facility not supported

300c  Data length not supported

300d  Reset procedure not supported

3301  Layer 1 protocol error

3302  Layer 2 protocol error, i.e. DTE address not correct, TEI not correct

3303  Layer 3 protocol error

3304  Another application got the call

3311  Fax remote station is not fax

3312  Fax training failed

3313  Fax disconnect before transfer

3314  Fax disconnect remote abort

3315  Fax disconnect remote procedure

3316  Fax disconnect local transmitter underrun

3317  Fax disconnect local receiver overflow

3318  Fax disconnect local abort

3319  Fax illegal transmit data   

34xx  Error cause from the ISDN line, xx represents the ISDN cause (see table 4)

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9. Diagnostic using the internal Trace

For more sophisticated debugging an internal trace functionality is implemented.  
This logging mechanism allows writing of ISDN and serial interface activities into  
a wrap around buffer. The type of entries can be selected by a trace mask.

trcmsk – set tracemask

  trcmsk par   Setup the mask to select the type of data to be written  

into the tracebuffer. 
Default: D channel Layer 1 and 3, DTE interfacelines,  
DTE-Data in connection-setup and clearing-phase. 
The parameter par has to be setup in the following way,  
 all bytes have to be entered (default 00 00 00 00 00 00 00 80): 
par := bl1  bl2  bl3  dl1  dl2  dl3  sl1  app

bl1  reserved  00

bl2  B channel frames (layer 2) disabled  00 (default)

  enable HDLC frames  03

bl3  B channel packets (layer 3) disabled  00 (default)

  enable X.25 packets  03

dl1  D channel layer 1 status disabled  00 (default)

  enable C/I codes and states  77 

dl2  D channel LAPD frames disabled  00 (default)

  enable HDLC frames  03

dl3  D channel layer 3 messages disabled  00 (default)

  enable layer 3 messages  72 

sl1  serial line trace disabled  00 (default)

  enable serial trace  05 

app  No call logging  00

  enable call logging  80 (default)

Examples:
    trcmsk 0000007700720500   D channel layer-1 and layer-3, serial data

and status lines

    trcmsk 0003000000720500   D channel layer-3, B-channel layer-2, 

serial data and status lines

    trcmsk 0000030000720500   D channel layer-3, B-channel layer-3, 

serial data and status lines

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trcdln – length of trace entry
  trcdln xx   set trace buffer entries to a maximum length of xx. (default: 256).

trcon – start trace write

  trcon   set trace to active regarding tracemask.

trcoff – stop trace write

  trcoff  set trace to OFF independent of tracemask.

trcclr – clear trace buffer

  trcclr  clear actual tracebuffer contents.

trcread – read trace buffer

  trcread   Output of the complete trace buffer in hexadecimal chars  

(ASCII, max. line length 72 chars). 
Every entry of the trace buffer is output using the following format: 
<Entry number><Timestamp><Type><Length><Data bytes> 
Entry number  Sequence number of entry 
Timestamp  in units of 10 ms 
TypeAndSource   Source of traceentry:

bit0–7 : type from tracemask 

bit8–14 : source of traceentry:
        0500 : D channel layer 1 (dl1)
        0600 : D channel layer 2 (dl2)
        0700 : D channel layer 3 (dl3)
        0900 : Serial line (sl1)
      bit15 :  0xxx : incoming event (from ISDN line)
        8xxx : outgoing event (to ISDN line)
        “FFFF” : Reset for firmware
    Length  Length of following data bytes
    Databytes   Data bytes; continued lines are indicated

by an “>”.

    Coding of trace data bytes dependent of TypeAndSource:

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85

0511/8511:  D channel layer 1 status
  0xF1  Inactive not used
  0xF2  Sensing not used
  0xF3  Deactivate
  0xF4  Awaiting Signal
  0xF5  Identifying Input
  0xF6  Synchronized
  0xF7  Activated
  0xF8  Lost Framing

0512:  D channel layer 1 C/I code (NT to TE)
  0x00  Deactivation Request from F7/F8
  0x01  Reset acknowledge
  0x02  Test mode acknowledge
  0x03  Slip detected
  0x04  Signal received
  0x05  Deactivation Request from F6
  0x07  Power up
  0x08  Activation request
  0x0A  Activation request loop
  0x0B  Illegal code violation
  0x0C  Activation indication priority 8
  0x0D  Activation indication priority 10
  0x0E  Activation indication loop
  0x0F  Deactivation confirmation

8512:  D channel layer 1 C/I code (TE to NT)
  0x00  Timing
  0x01  Reset
  0x02  Test mode SSP
  0x03  Test mode SCP
  0x08  Activation request priority 8
  0x09  Activation request priority 10
  0x0A  Activation request loop
  0x0F  Deactivation indication

86

6620-3200

  0712/8712:    D channel messages, coding refers to Q.931 and ETS 300102-1. 

Coding of Message Type within D channel layer 3 message – 4th  
data byte in trace output:

 Message code   Message name 

  (Hex)

  01  ALERTING

  02  CALL PROCEEDING

  03  PROGRESS

  05  SETUP

  07  CONNECT

  0D  SETUP ACKNOWLEDGE

  0F  CONNECT AKNOWLEDGE

  20  USER INFORMATION

  21  SUSPEND REJECT

  22  RESUME REJECT

  25  SUSPEND

  26  RESUME

  2D  SUSPEND ACKNOWLEDGE

  2E  RESUME ACKNOWLEDGE

  45  DISCONNECT

  46  RESTART

  4D  RELEASE

  4E  RESTART ACKNOWLEDGE

  5A  RELEASE COMPLETE

  60  SEGMENT

  75  STATUS ENQUIRY

  79  CONGESTION CONTROL

  7B  INFORMATION

  7D  STATUS

  7E  NOTIFY

6620-3200

87

  0602/8602:   D channel LAP-D frames, coding refers to Q.921.

  0904/8904:    Serial line received / transmitted data by the IDW-90 in  

command phase (i.e. AT commands and responses).

  0901:  Serial status lines.

  X  X  CTS  RTS  DCD  RI  DSR  DTR

  -  -  0/1  0/1  0/1  0/1  0/1  0/1

     The count of the received value is hexadecimal coded (0x NN). 

An active level (ON) of the serial status line is signalled with  
logical level “1”.

    Example:

  X  X  CTS  RTS  DCD  RI  DSR  DTR  Hex coded result

  -  -  0/1  0/1  0/1  0/1  0/1  0/1  0xNN

  -  -  ON  ON  OFF  OFF  ON  ON  0x33

  -  -  ON  ON  ON  OFF  ON  ON  0x3B

  -  -  ON  ON  OFF  OFF  ON  ON  0x33

      ON  OFF  OFF  OFF  ON  OFF  0x22

88

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9.1 Call logging

Within the trace module functionality the logging of ISDN connection attempts –  
successful or not – can be selected (default).
The buffer is built as a wrap around buffer, if full, the oldest entries will be deleted.
The maximum number of entries is about 80.

Every entry is formatted in the following way:
EntryNo, dw(timestamp), int(TypeandSource), int(Length), Date, Time, int(Appl), 
int(Service), Duration, int(State), Cause, ChargingInfo, ISDN-No.

For detailed information about the Disconnect cause refer to the chapter on ISDN  
causes.
  The following commands can be used:

  trcmsk     0000000000000080 

Enable call logging

trcread 
    Readout all available logging data

trcclr 
    Clear logging data

  Examples:   Reset 

00000 0000000002 FFFF 
Outgoing Call, normal clearing: 
    00001 0000013349 8A80 002F 98/06/16 14:48 80 02  
    00:00:01 00 349F 0000 291 
 Outgoing Call busy: 
    00002 0000020676 8A80 002F 98/06/16 14:49 80 02  
    00:00:04 FF 3491 0000 500 
Incoming Call, normal clearing: 
    00003 0000020875 0A80 002F 98/06/16 14:59 80 02  
    00:00:06 03 349F 0000 270

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10. Diagnostic using analogue chipset status report

For sophisticated diagnostic and debugging of analogue connections the following  
command is available.

!#UD – Last Call Status Report

!#UD is an action command requesting reporting of logged operation events. It does  
not take parameters and must be the last command in the command line.
The modem logs aspects of their operation for each call, and saves these results until 
cleared by one of the following events:

  1. Power off

  2. Hard reset 

  3. Soft reset = ATZ or AT&F

  4. AT!D or ATD# command issued

  5. Automatic answer (e.g., set register !S0>0 and ring detected)

10.1 Data Call State Model

For purposes of this command, there are four data call states, and associated  
status issues:

  …-Call Setup

•  Calling DCE: get dial tone, generate dial digits,  
detect call progress signals.

    • Answering DCE: detect ringing, detect CallerID, etc.

  …-Negotiation

    • V.25 calling tone/answer tone exchanges.

    • V.8 or V.8bis call function negotiations.

    • V-series modem carrier detection and training.

    • Modem-to-modem protocols (e.g., V.42, V.42bis).

  …-Data Transfer

    • Bit-error rates, for each direction.

    • Rate renegotiation.

    • Retraining.

  …-Call Termination

    • protocol disconnect signals.

    • carrier disconnect signals.

    • loss of carrier.

    • excessive error rates.

90

6620-3200

Command Syntax

In response to this command, the modem will report one or more lines of informa­tion text as defined below. Information text format conforms to V.250; each line is pre­ceded by a <CR><LF> pair, and terminated by <CR><LF>. (CR and LF characters may be 
changed by writing new values to the contents of registers S3 and S4, respectively.)
The modem may generate a single line or multiple lines, followed by a standard OK final 
result code. For example, if call setup failed, only that result is useful. Each information 
text line is formatted as follows, including one or more key=value pairs:

Command  AT!#UD
  Response  DIAG <token key=value [[key=value] [key=value]] ...>

Defined Values
    DIAG  5 hexadecimal characters (44h, 49h, 41h, 47h, 20h)
    <  Left angle bracket (less than sign) (3Ch)
    token   Unique 32-bit hexadecimal string

2A4D3263(32h, 4h1, 34h, 44h, 33h, 32h, 36h, 33h)
    space  space character (20h)
    Key   One- or two-digit hexadecimal number (see Key in Table 8)
    =  Equal sign (3Dh)
    Value  Any string as defined below (Table 8 as appropriate)
    >  Right angle bracket (greater than sign) (3Eh)

Unless otherwise noted, all values are hexadecimal numbers. Any numeric values from 
tables in ITU V.58 are converted to hexadecimal. Multi-digit values are reported MSD 
first. Leading 0’s may be deleted. See examples in Table 17.

callCleared codes from 3.6.4/V.58-1994

callCleared: indicates that the DCE has gone on hook and that the previously existing 
network connection has been cleared. These values are hex, converted from decimal in 
V.58. callCleared codes are described in Table 16.

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91

Table 9 AT!#UD Last Call Status Report Format

Key  Value(s)  Definition

0  2 digits  Diagnostic Command Specification revision number, digit.digit
  1  Table 9  Call Setup Result code
  2  Table 10  Multi-media mode
  3  Table 11  DTE-DCE interface mode
  4  String  V.8 CM octet string, same format as V.250, in quotes
  5  String  V.8 JM octet string, same format as V.250, in quotes
10  0–2F  Received signal power level, in –dBm (0-43)
11  0–1F  Transmit signal power level, in –dBm (e.g., 0–17)
12  0–64  Estimated noise level, in –dBm (e.g., 10–90)
17  0–FFF  Round Trip delay, in units of ms
18  Table 12  V.34 INFO bit map
20  Table 13  Transmit Carrier Negotiation Result
21  Table 13  Receive Carrier Negotiation Result
22  0–1F40  Transmit Carrier symbol rate (0–8 000) in symbol/s
23  0–1F40  Receive Carrier symbol rate (0–8 000) in symbol/s
24  0–FA0  Transmit Carrier frequency (0–4 000) in Hz
25  0–FA0  Receive Carrier frequency (0–4 000) in Hz
26  0–FA00  Initial transmit carrier data rate (0–64 000) in bit/s
27  0–FA00  Initial receive carrier data rate (0–64 000) in bit/s
30  0–FF  Temporary carrier loss event count
31  0–FF  Carrier Rate re-negotiation event count
32  0–FF  Carrier Retrains requested
33  0–FF  Carrier Retrain requests granted
34  0–FA00  Final transmit carrier data rate in bit/s
35  0–FA00  Final receive carrier data rate in bit/s
40  Table 14  Protocol Negotiation Result
41  0–400  Error control frame size in bytes
42  0–FF  Error control link timeouts in transmission
43  0–FF  Error control link NAKs received
44  Table 15  Compression Negotiation Result
50  0–2  Transmit flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133
51  0–2  Receive flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133
52  0–FFFFFFFF  Transmit characters sent from DTE
53  0–FFFFFFFF  Received characters sent to DTE
54  0–FFFF  Transmit characters lost (data overrun errors from DTE)
55  0–FFFF  Received characters lost (data overrun errors to DTE)
56  0–FFFFFFFF  Transmit I- Frame count, if error control protocol running
57  0–FFFFFFFF  Received I-Frame count, if error control protocol running
58  0–FFFF  Transmit I-Frame error count, if error control protocol running
59  0–FFFF  Received I- Frame error count, if error control protocol running
60  Table 16  Termination Cause
61  0–FF  Call Waiting event count

92

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 Table 10 Call Setup Result Codes

 Code  Definition

0  No previous call (modem log has been cleared since any previous calls)
  1  No dial tone detected
  2  Reorder signal detected, network busy
  3  Busy signal detected
  4  No recognized signal detected (e.g., no signal, or nothing recognizable)
  5   Voice detected * if this is a voice modem (e.g., V.253) operating in voice mode

(e.g., +FCLASS=8.0)
  7  Data Answering signal detected (e.g., V.25 ANS, V.8 ANSam)
  8  Data Calling signal detected (e.g., V.25 CT, V.8 CI)
  9  Fax Answering signal detected (e.g., T.30 CED, DIS)
  A  Fax Calling signal detected (e.g., T.30 CNG)
  B  V.8bis signal detected

Table 11 Multimedia Modes

 Code  Definition

0  Data Only
  1  Fax Only
  2  Voice
  3  VoiceView(tm)
  4  ASVD, V.61
  8  DSVD, V.70
  9  Video-telephony, H.324
  A  Other V.80 call

Table 12 Multimedia Modes

 Code  Definition

0  Async data
  1  V.80 transparent synchronous mode
  2  V.80 framed synchronous mode

Table 13 V.34 INFO bit report

  Bits  Source bits  Definition

31–30  INFO0 bit 20; 0 
 20–29  INFOc bits 79–88 
 16–19  INFOc bits 26–29 or 35–38 or 44–47   Pre-emphasis field, selected by the symbol

or 53–56 or 62–65 or 71–74  rate chosen
 12–15  INFOa bits 26–29 
 10–11  MP bit 50; 0 
  0–9  INFOa bits 40–49

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Table 14 gstnModulationSchemeActive from 3.7.2/V.58

 Value  Description

0  V.17 (G3 Fax call)
  1  V.21
  2  V.22
  3  V.22bis
  4  V.23 Constant Carrier (1200/75)
  8  V.27ter (G3 Fax call)
  9  V.29 HD (G3 Fax call)
  A  V.32
  B  V.32bis
  C  V.34
  E  V.90
  81  K56flex
  84  Bell 212A
  85  Bell 103

Table 15 errorControl Active from 3.5.2/V.58

 Value  Description

0  Disable/none
  1  V.42 LAPM
  2  V.42 Alternative protocol (MNP™)
  80  MNP10™

Table 16 compressionActive from 3.2.2/V.58

 Value  Description

0  None
  1  V.42bis
  80  MNP5™

94

6620-3200

 Table 17 callCleared codes from 3.6.4/V.58-1994

Value  Description  Notes 0  V.17 (G3 Fax call)

0  CauseUnidentified   Call setup issues
  1  No Previous call   Not in V.58
  2  Call is still in progress  Not in V.58
  3  Call Waiting signal detected   Not in V.58, only if modem can detect it
  4  Delayed   Same as value 2A, CallAttemptsLimitExceeded
  19  InactivityTimerExpired 
  1F  cct108isOffInhibitsDial   DTR low
  20  cct108turnedOff   DTR drop
  29  BlacklistedNumber 
  2A  CallAttemptsLimitExceeded   Same as “Delayed”, see ETS 300 001
  2B  ExtensionPhoneOffHook   If extension detection supported
  2C  CallSetupFailTimerExpired   e.g., S7 timeout
  2D  IncomingCallDetected   If incoming call while sending dial command.
  2E  LoopCurrentInterrupted 
  2F  NoDialTone 
  31  ReorderTone   Fast busy
  33  EngagedTone   Busy
  34  LongSpaceDisconnect   And if modem program to abort on long space
  3C  CarrierLost   Signal Converter
  3D  TrainingFailed 
  3E  NoModulationinCommon 
  3F  RetrainFailed 
  40  RetrainAttemptCountExceeded 
  41  GstnCleardownReceived 
  42  FaxDetected   If this was not a fax call attempt
  46  InTestMode   Test
  50  AnyKeyAbort  Call Control
  51  DteHangupCommand   If ATH was used to terminate the previous call.
  52  DteResetCommand   If ATZ was used to terminate the previous call.
  5A  FrameReject   Error Control
  5B  NoErrorControlEstablished   Error control was required
  5C  ProtocolViolation 
  5D  n400exceeded   LAPM retransmission Count Timer
  5E  NegotiationFailed 
  5F  DisconnectFrameReceived 
  60  SabmeFrameReceived 
  64  LossOfSynchronization   Data Compression

6620-3200

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11. Example Modem Response and Usage

Table 18  Completed Data Call, with some errors and rate retrain  

during the call

Modem Response line Description  Description

DIAG <2A4D3263 0=09>  This is version 0.9
DIAG <2A4D3263 1=06 2=0 3=0>   Data Answer signal detected; Data only;

DIAG <2A4D3263 5=“C14513902A” 6=“A145”>   V.8 Call Menu indicates: V.8 Joint  

DIAG <2A4D3263 10=1F 11=0C 12=52>   Receive level = -31 dBm; transmit level =  

DIAG <2A4D3263 14=03 15=05 16=10>   Far end echo delay in milliseconds;  

DIAG <2A4D3263 20=C 22=780 24=0C80 26=79E0>   Transmitter: V.34 training completed; V.34 

DIAG <2A4D3263 30=00 31=03 32=01 33=01>   No carrier loss events, 3 carrier rate  

DIAG <2A4D3263 40=1 41=100>   LAPM negotiation completed; 

DIAG <2A4D3263 42=0 43=0>  No error control timeout or link NAKs
DIAG <2A4D3263 44=1 45=400>   V.42bis data compression used;

DIAG <2A4D3263 50=2 51=2>   Hardware transmit and receive  

DIAG <2A4D3263 52=343CC 54=0>   213964 DTE characters transmitted,  

DIAG <2A4D3263 53=7230E6 55=47>   7483622 DTE characters received,  

DIAG <2A4D3263 56=29D 58=0001>   597 (decimal) frames transmitted, 

DIAG <2A4D3263 58=2A4B 59=0004>   10827 (decimal) frames received, 

DIAG <2A4D3263 60=51>  Local PC initiated hangup

Character async

Menu selects:

–12 dBm; noise level = -82 dBm

Far end echo loss in dB; Near end echo 
loss = 16 dB

carrier frequency = 1920; V.34 symbol rate 
= 3 200; initial transmit rate is 31 200 bit/s

renegotiations attempted; 1 carrier retrain 
requested; 1 carrier retrain granted

frame size = 256

dictionary size = 1024

flow control

w/o underrun

71 characters lost due to receive data 
overrun

with 1 frame error

with 4 frame errors

96

6620-3200

Westermo Teleindustri AB • SE-640 40 Stora Sundby, Sweden

Phone [phone]  Fax [phone] 

E-mail: [e-mail] 

Westermo Web site: www.westermo.com

Subsidiaries

Westermo Data Communications AB 
Svalgången 1 
SE-724 81 Västerås 
Phone: [phone] • Fax: [phone] 
[e-mail]

Westermo Data Communications Ltd 
Talisman Business Centre • Duncan  Road 
Park Gate, Southampton • SO31 7GA 
Phone: [phone] • Fax.:[phone] 
E-Mail: [e-mail]

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Goethestraße 67, 68753 Waghäusel 
Tel.: [phone] • Fax.:[phone] 
E-Mail: [e-mail]

Westermo Data Communications S.A.R.L. 
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E-mail : [e-mail]

Westermo Data Communications Pte Ltd 
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Soon Wing Industrial Building 
Singapore 347893 
Phone [phone] • Fax [phone] 
E-Mail: [e-mail]

Westermo Teleindustri AB have distributors in several countries , contact us for further information.

REV.B  6620-3200  2010-04  Westermo Teleindustri AB, Sweden