Siemens INSYS Pocket ISDN-TA User manual

Operating Manual
Pocket ISDN - TA
ISDN Terminal Adapter
Version 3.0 / 03.01

Operating Manual Pocket ISDN-TA
Exclusion of Liability
The present manual by INSYS MICROELECTRONICS GmbH (hereinafter referred to
as INSYS) reflects the present state of the art of the products described therein. We
have endeavored to give a description that is as complete and clear as possible
in order to make work with our products as easy as possible for you. All the same,
the manual may contain technical inaccuracies and typing errors. As a result of
the rapid advance in the art, we must also reserve the right to incorporate
technical alterations and developments without separate advance notice.
That is why INSYS does not give any warranty for the contents of the manual and
for its continuing applicability.
Nor is INSYS liable for any loss of information or any incorrect use of information that
might result from consultation of the manual. Particularly, INSYS is not liable for
damage, nor indirect damage (including damage caused by financial loss, delays
affecting business transactions or interruptions of business and similar
consequences), arising from the use or improper use of this manual, not even in
the case where it was pointed out to INSYS or an agent of INSYS that such damage
might be sustained. This does not, of course, affect our legal liability for damages
based on any intent or gross negligence.
With respect to the data given in this manual, INSYS does not warrant the non-
existence of industrial property rights (trademarks, patents, utility models, etc.). Nor
are trade names, brand names, company names and product names in general
use but are subject to the relevant trademark, patent, utility model and registered
design rights.
The information must neither in whole nor even in part be copied, translated,
reproduced or in any other way transferred to or stored on any electronic medium
or other machine.
The purchase and use of software are governed by the General Conditions of
Delivery and Payment as well as the Terms of License of INSYS.
If any of the provisions on the exclusion of liability or on use are or become
ineffective for statutory reasons, this will not affect the other provisions.

Table of Contents I
Table of contents
1INTRODUCTION 1
1.1 Product description 1
1.2 Internet Access 1
1.3 AOL/CompuServe Access 2
1.4 T-Online 2
1.5 Remote LAN Access 2
1.6 Service 2
1.7 License 2
2INSTALLATION 3
2.1 Contents 3
2.2 Installation procedure 3
2.3 Windows 9x/ME/2000 Software Installation 3
2.3.1 Preparation (Windows9x/ME/2000) 4
2.3.2 Installation (Windows9x/ME/2000) 4
2.3.3 Uninstallation 5
2.4 Windows NT 4.0 Software Installation 5
2.4.1 Preparation (WindowsNT4.0) 5
2.4.2 Installation (WindowsNT4.0) 5
2.5 Configuration 6
3USING THE POCKET ISDN-TA WITH APPLICATION SOFTWARE 8
3.1 Configuration for Internet 8
3.1.1 Configuration under Windows 9x/ME/2000 8
3.2 Configuration for AOL/CompuServe 9
3.3 Configuration for T-Online (Germany only) 9
4CONFIGURING THE POCKET ISDN-TA 10
4.1 AT command set 10

II Operating manual Pocket ISDN-TA
4.1.1 ISDN specific AT commands 20
4.1.2 AT command S register set 22
4.1.3 AT result codes 23
4.2 ISDN access control 24
4.3 User to User Signalling UUS1 25
4.4 Subaddressing 26
4.5 Using Multilink PPP 26
4.5.1 Details on Multilink PPP 27
4.5.2 Call Bumping 28
4.5.3 Bandwidth on demand ("BOD") 28
4.6 Software update 29
4.6.1 Software update 29
5DIAGNOSTIC AND ERROR MESSAGES 30
5.1 Error messages from AT command set 30
5.2 Table of ISDN causes and their explanation (DSS1) 30
5.3 CAPI causes and their explanation 32
6APPENDIX 34
A1: Technical data: 34
A2: LED displays 34
A3: Pinout of the ISDN connector 35
A4: Pinout of the V.24/V.28 interface TA (DSUB 9) 36
A5: Pinout of the V.24/V.28 interface TA (DSUB 25): 36
A6: Cable layout for connection of terminals with 25 pin connectors (male or
female) to a TA 37
A7: Cable layout to connect a PC with 9 pin male plug through a serial COM-
port to a TA 38

Introduction 1
1Introduction
We are very pleased to see that you have bought a INSYS product and would like
to express our appreciation.
This documentation is valid for the product:
•POCKET ISDN-TA hardware version V2.0 or higher
Software version V5.351 or higher
1.1 Product description
• The POCKET ISDN-TA connects a PC (or other device with serial port)
to the ISDN. It gives access to online services as the Internet,
AOL/CompuServe and T-Online and is also suitable for remote LAN
access. You can see it as a digital replacement for an analogue
modem.
To work with POCKET ISDN-TA you need
• an ISDN Basic Rate Interface (BRI) (replacing an analogue telephone
line). The basic rate access can be ordered by your local telephone
company or PTT.
• a PC with online software for a modem (see chapter 3)
The serial port of the PC should be capable of a data rate of up to 115.2 kbps
(230.4 kbps for Multilink PPP to increase performance). This might require an
additional PC card for older PCs.
1.2 Internet Access
There are three ways to access the Internet via ISDN:
• by synchronous PPP or Multilink PPP
• by bit rate adaptation V.120
• by B channel protocol X.75
It depends on the access facilities of your Internet service provider (ISP) or
Point-of-presence (POP) which one you may use (see figure 1).
ISDN network
Pocket
ISDN-TA
PC with
Online Software
Online (POP) Access Server
CompuServe Access Server
T-Online Host System
async
V.24
ISDN
Basic
Rate
Access
Figure 1: Usage of the Pocket ISDN-TA to access an Online Service

2 Operating manual Pocket ISDN-TA
1.3 AOL/CompuServe Access
AOL/CompuServe is accessed via ISDN by the protocol V.120 or X.75 (see picture
1). It depends on the access facilities of your AOL/CompuServe access point
which one you have to use (see figure 1). The increasingly common protocol used
is X.75.
1.4 T-Online
T-Online (German Online Service) is accessed via ISDN by the protocol T.70NL /
X.75 or synchronous PPP (see figure 1).
1.5 Remote LAN Access
To access a LAN remotely via ISDN you have to choose the appropriate protocol
that is used by the ISDN router on the LAN.
1.6 Service
INSYS has installed a Windows-NT-Server just for test purposes. The Server supports
the RAS (Remote Access Service) with full 64 kbps in one single B channel. The RAS
service gives the possibility to connect PC's using Windows-2000/NT or
Windows9x/ME with each other.
You have to install on your Windows PC the Dialup Networking – see the Windows
helpdesk how to install and use. Please select at your machine the protocol stack
TCP/IP.
The POCKET ISDN-TA has to be set to HDLC async to sync (like the configuration for
Internet access) by selecting the Modem “TA Internet PPP”.
The ISDN number is ++49 40 89088 328.
Please use the username "guest" and password "guest".
1.7 License
The POCKET ISDN-TA has the following license number for the connection to the
PSTN according to CTR3/A1:
CE-0682 X for Europe (EC), Switzerland, Norway.
POCKET ISDN-TA is conforming to the European safety requirements IEC 60 950.
Please use only the delivered power supply or an original replacement from INSYS.
Connect the POCKET ISDN-TA only to the S0-interfaces with SELV (Safety Extra Low
Voltage) related to EN60950.
The POCKET ISDN-TA is conforming to the European rules of EMC. EN50081-1, here
EN55022 Class B, for electromagnetic field emission and EN50082-1 for immunity
against electromagnetic interference.

Installation 3
2Installation
2.1 Contents
This packet contains the following items:
• ISDN Terminal adapter POCKET ISDN-TA in desktop box
• Mains plug power supply adapter
• ISDN interface cable
• DTE interface serial cable
• Floppy disk with installation software Windows9x/ME/2000 and WindowsNT
• This user manual
2.2 Installation procedure
• Connect the serial port (DTE) of the POCKET ISDN-TA to the serial port
(COM-port) of the PC by using the supported DTE interface serial cable.
Please make sure that the COM-port of the PC is not used for other purposes
or by other communication programs.
• Connect the ISDN port of the POCKET ISDN-TA to the basic rate interface
(BRI) of the ISDN using the delivered ISDN cable.
• Connect the power supply with the POCKET ISDN-TA and plug it into mains.
Please reference to page 6 for selecting the correct plug for interfacing.
Now the power-up sequence described in chapter 0 should appear.
The POCKET ISDN-TA is now ready for use; please refer to the next chapter for the
configuration to use the PC together with the POCKET ISDN-TA.
2.3 Windows 9x/ME/2000 Software Installation
This chapter describes the installation, configuration and usage of the POCKET
ISDN-TA for the operating system Windows 9x/ME/2000.
The following components will be installed:
•Modem driver into the modem list
•CAPI 2.0 driver
•Configuration program

4 Operating manual Pocket ISDN-TA
2.3.1 Preparation (Windows9x/ME/2000)
Please check the following requirements before installing the software for
Windows9x/ME/2000:
•PC-System with connected POCKET ISDN-TA.
•Access to a 3,5“ Floppy disk drive and hard disk
•Installed Microsoft Windows 9x/ME/2000 operation system
•Windows 9x CD-ROM (Installation disks) (typically not required for ME/2000)
•Installation disk SW-TA/Win9x/WinNT4.0/Win2000
2.3.2 Installation (Windows9x/ME/2000)
1. When the POCKET ISDN-TA is connected and power up while booting your
PC with Windows9x/ME/2000, the Plug and Play feature of the POCKET ISDN-
TA will get active, so Windows9x/ME/2000 will request an installation disk.
If you want to install manually the POCKET ISDN-TA driver, execute the
program SETUPTA.EXE from the installation disk. This program leads you
through the installation.
2. At the end of the installation you will get information about the installed
software and modem types.
The configuration of the POCKET ISDN-TA will be described in the following
section. You can skip the configuration of the POCKET ISDN-TA now, if
information is missing. The configuration can be done later by using the ISDN
configuration generator.
The installation program creates in addition a program folder with program
icons.
The ISDN Configuration Generator is the configuration program for the
POCKET ISDN-TA.
The file Readme shows actual information and changes of the product
release.
The Patch icons add the POCKET ISDN-TA to the modem list of the
software for the online service. Before configuring and using the online
software (after installation) you have to execute the Patch ICON to add
the POCKET ISDN-TA modem to the modem list of the online application.
After making the patch please use one of the following POCKET ISDN-TA
modems (see also page 9):
America Online: use TA X.75
T-Online Patch: use TA sync PPP
Using the program Uninstall Shield you can uninstall the actual software
and delete the POCKET ISDN-TA modems from the modem list.

Installation 5
3. Please continue from this point with the configuration as described in the
section Configuration.
2.3.3 Uninstallation
If you want to delete the software of the POCKET ISDN-TA from your hard disk,
please start the program UnInstallShield from the program folder POCKET ISDN-TA.
2.4 Windows NT 4.0 Software Installation
This chapter describes the installation, configuration and usage of the POCKET
ISDN-TA for the operating system Windows NT 4.0.
The following components will be installed:
•Modem driver into the modem list
•CAPI 2.0 driver
•Configuration program
2.4.1 Preparation (WindowsNT4.0)
Please check the following requirements before installing the software for
WindowsNT4.0:
•PC-System with connected POCKET ISDN-TA.
•Access to a 3,5“ Floppy disk drive and hard disk
•Installed Microsoft Windows NT operation system
•Windows NT4.0 CD-ROM (Installation disks)
•Installation disk SW-TA/Win9x/WinNT4.0/Win2000
2.4.2 Installation (WindowsNT4.0)
1. Execute the program SETUPTA.EXE from the installation disk. This program
leads you through the installation.
2. At the end of the installation you will get information about the installed
software and modem types.
The configuration of the POCKET ISDN-TA will be described in the following
section. You can skip the configuration of the POCKET ISDN-TA now, if
information is missing. The configuration can be done later by using the
POCKET ISDN-TA ISDN Configurator.
3. Restart Windows to activate new settings.
4. Now you have to add new Modems manually. Please go to
START -> SETTINGS -> CONTROL PANEL -> MODEMS
Select ADD and activate the button "Don’t detect my modem, I will select it
from a list".
Please choose via the DISKETTE button the path to the POCKET ISDN-TA
installation disk and open the file "mdmstdaa.inf".
You can select the following POCKET ISDN-TA modems:

6 Operating manual Pocket ISDN-TA
TA Internet PPP
TA Internet ML-PPP
TA T.70-BTX
TA V.120
TA X.75
Please note, that every modem has to be installed separately.
5. Select the used COM port and finish to end the installation procedure.
2.5 Configuration
Using the ISDN TA Configurator the configuration parameter of the POCKET ISDN-TA
will be set up. If you don’t know the correct parameter please contact the
provider of your ISDN basic rate interface (telephone company).
Please make sure, the POCKET ISDN-TA is connected to the serial interface and
powered.
After providing the settings you can leave the configurator. The POCKET ISDN-TA is
now ready to be used with Modem applications (i.e. Microsoft Dial-Up Networking)
or CAPI compatible application programs.
Displays and control elements
At the back of the POCKET ISDN-TA you will find the connectors for the following
devices:
Fig. 2: Back view of the desktop model POCKET ISDN-TA
PWR: external power supply
S0-Bus: ISDN interface.
RS232: V.24 interface for DTE, i.e. a PC
You can control the status of the POCKET ISDN-TA via 8 LEDs at the front side.
Fig. 3: Front view of the desktop model POCKET ISDN-TA

Installation 7
The 4 LEDs at the right show the status of the serial interface to the PC:
R : shows activity of receiving data from the POCKET ISDN-TA and ISDN
line
T : shows activity of transmitted data from the terminal
DTR : shows the status of DTR line, i.e. the terminal is trying to connect via
the POCKET ISDN-TA
DCD : represents the status of the DCD line (V.24); shows normally the
connection to an access server.
Both LEDs, B1 and B2, show the connection state of the ISDN B channels:
If ON this B channel is occupied due to an incoming or outgoing connection (data
or voice).
Both of the LEDs, L1 and L2, show the overall status of the POCKET ISDN-TA in coded
form. The following list describes the view for an error free power on sequence of
the POCKET ISDN-TA.
Status L1L2
1. Power-On-Phase, wait ⊗Θ(about 2 sec)
2. Active phase, ISDN ok ⊗O
3. Connected, ISDN data
connection established ⊗⊗
LED Legend: ⊗On
ΘContinuously blinking
OOff
A complete list you can find in the appendix "LED displays"

8 Operating manual Pocket ISDN-TA
3Using the POCKET ISDN-TA with Application Software
To use the POCKET ISDN-TA with different application software and access points
you have to look for the following items:
• Usually you need a contract with the service provider. They can help
you to get an appropriate application program to run on a PC.
• The service provider will also supply you with the ISDN access number
to call (has to be entered in the application program).
• The TAs parameter must fit the characteristics of the access point
which be recommended in the next chapters.
3.1 Configuration for Internet
To access the Internet via ISDN you have to have a contract with an Internet
service provider (ISP) who runs an ISDN access. To configure the POCKET ISDN-TA
you need the following information from the ISP:
• ISDN access number (to be entered at the PC program)
• Layer two protocol, usually the protocol PPP by selecting Modem
POCKET ISDN-TA Internet PPP.
• Access protocol (to be entered at the PC system software or Internet
software)
To configure the Internet access software on the PC it may be necessary that you
need some additional information like TCP/IP address, user name, password etc.
Please refer to the software manual.
3.1.1 Configuration under Windows 9x/ME/2000
The configuration of the POCKET ISDN-TA can be dependent of the type of access
the Internet provider is supporting. The following types of access are mostly used
for public ISDN access.
• HDLC async to sync conversion
This protocol has to be set up, if the service provider uses an access point
where the protocol PPP is running.
Please get more information from your Internet provider if necessary.

Using the POCKET ISDN-TA with Application Software 9
3.2 Configuration for AOL/CompuServe
You need a contract with AOL/CompuServe to access the AOL/CompuServe
network via ISDN. To configure the POCKET ISDN-TA you need the following
information from AOL/CompuServe:
• ISDN access number
• Layer two protocol, usually the protocol-type X.75 by selecting
Modem POCKET ISDN-TA X.75. Some accesses still use B channel
protocol V.120 (select Modem TA V.120).
How to select the modem see also page 4.
You can use a CompuServe access by running the CIM software package. For
AOL use the AOL software.
3.3 Configuration for T-Online (Germany only)
To use the T-Online service via ISDN you have to have a contract for a T-Online
access. For configuration you have to set up the following parameter:
• ISDN access number, "01910" for a basic rate access.
• The protocol T.70 by selecting Modem TA T-Online.
• Select the appropriate access type in your T-Online access software
(COM port)
Alternatively since summer 1997 another access point for T-Online has been
created (the latest T-Online software package has to be used):
• ISDN access number, "0191011" for a basic rate access.
• The protocol PPP by selecting Modem TA HDLC-PPP.

10 Operating manual Pocket ISDN-TA
4Configuring the POCKET ISDN-TA
The settings of the POCKET ISDN-TA for the V.24 interface and the S0interface are
called configuration. The POCKET ISDN-TA is delivered with a set of pre-set values.
In the following section it will be shown how, by using the configuration
commands, you can examine the configuration of the POCKET ISDN-TA and if
necessary change it. The values can be stored in non volatile memory; this means
they´ll remain unchanged even if the power supply is disconnected.
You can configure the POCKET ISDN-TA in the following ways:
•by using the AT command set entered by the locally connected PC.
•by using TA configuration commands entered by the locally connected PC.
•by using TA configuration commands entered via the ISDN line (remote
configuration).
Normally the configuration via AT commands is sufficient.
The latter case are for more sophisticated configuration and described in the
chapter TA+Configurator command set
4.1 AT command set
All parameter can be changed by using an extended AT command set described
in this chapter.
Please check if the factory setting will fit with your environment. The factory setting
is described (highlighted) in the parameter list shown in chapter "AT command set"
(see below).
If you want another configuration as set in the factory default setting, please do
the following steps:
• Connect the POCKET ISDN-TA to ISDN interface
• Connect the PCs com-port to the DTE interface of the POCKET ISDN-TA.
• Connect the power supply to the mains socket.
• Start a terminal emulation on your PC, please verify that the baudrate
setting of the terminal emulation fits those of the POCKET ISDN-TA.
• Set up the parameter of the POCKET ISDN-TA from the terminal emulation
and save the parameter using the AT command set.
Example:
To change the used B channel protocol to X.75 please enter the
following commands:
ATB10<↵> (set protocol to X.75)
AT&W<↵> (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

Configuring the POCKET ISDN-TA 11
with the prefix AT and are terminated with <↵>. Corrections in a command line are
done with <BACKSPACE>. A command line has a maximum of 80 characters. The
command line is automatically cancelled by longer input. Blanks are ignored,
capital/small letters are not significant.
The parameter settings of the POCKET ISDN-TA 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 transparent to the remote device.
Supported commands:
A/ Repeat last command line
This command repeats the commands of the last entered command line.
Note: No prefix AT is required.
A/
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[//<UUS1data>]
UUS1data transmitted data with UUS1 signalling
B B channel protocol
Transmission protocol for data communication in the B channel.
ATB0 : V.110 asynchronous (i.e. for BBS access)
ATB3 : HDLC async to sync conversion (PPP asynchronous, single link PPP,
default)
(i.e. for Internet / dial-up network
access)
ATB4 : HDLC transparent (octets are packed into HDLC frames)
ATB5 : Byte transparent (raw B channel data)
ATB10 : X.75-NL (i.e. for BBS access)
ATB13 : V.120 (for AOL/CompuServe access)
ATB20 : X.31 B channel (X.25 B channel, option)

12 Operating manual Pocket ISDN-TA
ATB21 : X.31 D channel (Option)
ATB22 : T.70-NL-CEPT (for T-Online (videotex) access)
ATB23 : T.90-NL
ATB31 : Multilink PPP (ML-PPP)
%B Set local baudrate
Sets the local baudrate of the POCKET ISDN-TA to the desired value (fix value) or to
autodetection. When autodetection is set, the POCKET ISDN-TA 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 1200 bit/s
AT%B2 Local baudrate set to 2400 bit/s
AT%B3 Local baudrate set to 4800 bit/s
AT%B4 Local baudrate set to 9600 bit/s
AT%B5 Local baudrate set to 19200 bit/s
AT%B6 Local baudrate set to 38400 bit/s
AT%B7 Local baudrate set to 57600 bit/s
AT%B8 Local baudrate set to 115200 bit/s
AT%B9 Local baudrate set to 230400 bit/s
Note: If autobauding is selected (default) and after powering on the TA+POC no
AT command is entered, a response from the POCKET ISDN-TA (i.e. RING) will
be sent with the baudrate 115200 bit/s.

Configuring the POCKET ISDN-TA 13
CONF Enter TA+Configurator
Enters directly into the TA+Configurator, the configuration prompt "#" will be
displayed. Leave the TA+Configurator with the command "quit".
ATCONF
&C DCD control
Selects the behavior of the DCD control line from the POCKET ISDN-TA.
AT&C TA control line DCD is always ON
AT&C1 DCD ON indicates ISDN connection is established and
synchronized (default)
#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,
, also to be found via INSYS URL http:\\www.insys-tec.de.
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 0000).
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 00000004).
Example: AT#C2=00030012 : 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).

14 Operating manual Pocket ISDN-TA
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 TA.
Must be the last command in AT command line.
Any character input while the POCKET ISDN-TA is dialing will cancel the dialing
procedure.
ATD<CALLEDnumber>[/<subaddr>][//<UUS1data>]
[,X[Pxxx-][R ][N<nuipwd> ][G<cug> ]<X25number>][D<userdata>]]
CALLEDnumber: ISDN call number for a dialled B channel connection or
X.25 number for X.31 D channel
subaddr dialled subaddress
UUS1data transmitted data with UUS1 signalling
P : use packetsize xxx for X.25 connection
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)
D : separator for userdata: "D" or ",": user data without protocol ID
"P": user data with protocol ID (“01000000“)
ATDL Dial the last dialled number
ATDS=nDial number nfrom stored telephone number list (n= 1..3)
(See command AT&Z to store numbers)
ATD<CALLEDnumber>e Make a call for remote management (see note).
Note1: To setup the own subaddress see configuration command sub.
Note1: Adding an "e" to CALLEDnumber indicates that a connection to the
internal remote access of a POCKET ISDN-TA shall be performed, the
protocol X.75 (ATB10) has to be used.