Page 1¶

COSMOS X.21 Option¶

Operator Guide¶

ND-30.033.01

ND
Norsk Data

Page 2¶

COSMOS X.21 Option¶

Operator Guide¶

ND-30.033.01

Page 3¶

NOTICE¶

The information in this document is subject to change without notice. Norsk Data A.S assumes no responsibility for any errors that may appear in this document. Norsk Data A.S assumes no responsibility for the use or reliability of its software on equipment that is not supplied or supported by Norsk Data A.S.

The information described in this document is protected by copyright. It may not be photocopied, reproduced or translated without the prior consent of Norsk Data A.S.

Page 4¶

PRINTING RECORD¶

Printing	Notes
06/84	Version 01

Publ. No. ND–30.033.01
COSMOS X.21 Option Operator Guide
June 1984

NORSK DATA A.S
P.O. Box 25, Bogerud
0621 Oslo 6, Norway

Page 5¶

Manual Updates¶

Manuals can be updated in two ways, new versions and revisions. New versions consist of a complete new manual which replaces the old manual. New versions incorporate all revisions since the previous version. Revisions consist of one or more single pages to be merged into the manual by the user, each revised page being listed on the new printing record sent out with the revision. The old printing record should be replaced by the new one.

New versions and revisions are announced in the ND Bulletin and can be ordered as described below.

The reader's comments form at the back of this manual can be used both to report errors in the manual and to give an evaluation of the manual. Both detailed and general comments are welcome.

These forms, together with all types of inquiry and requests for documentation should be sent to the local ND office or (in Norway) to:

Documentation Department¶

Norsk Data A.S
P.O. Box 25, Bogerud
0621 Oslo 6, Norway

Page 6¶

Preface¶

THE PRODUCT¶

This manual describes the product:

COSMOS X.21 Option ND 10403

THE READER¶

This manual should be read by all system operators (supervisors) in charge of installing, loading, testing and maintaining the product COSMOS X.21 Option.

PREREQUISITE KNOWLEDGE¶

Detailed knowledge of the operating procedures of SINTRAN III (version H or later) and the COSMOS Basic Module with Inter System XMeSsage, (IS XMSG) is assumed.

Familiarity with the basic requirements in the CCITT X.21 recommendation is helpful, but not essential.

The following manuals supply additional information about products closely related to the COSMOS X.25 Option:

Manual	Number
SINTRAN III System Supervisor Manual	ND-30.003
COSMOS Operator Guide	ND-30.025

ND-30.033.01

Page 7¶

TABLE OF CONTENTS¶

Section	Page
1 INTRODUCTION	1
1.1 Synopsis	1
1.2 The CCITT X.21 Standard	1
1.3 The Different Processes of COSMOS X.21	3
1.4 The Different X.21 Processes	5

| 2 HOW TO START COSMOS X.21 OPTION | 7 | | 2.1 Synopsis | 7 | | 2.1.1 System Prerequisites | 7 | | 2.1.2 The XMSG-COMMAND Program | 7 | | 2.1.3 Special X.21 XMSG Commands | 8 | | 2.1.4 Explanation of Parameters | 9 | | 2.2 The X21-NET-START:MODE File | 9 | | 2.2.1 How to Stop the X.21 System | 11 | | 2.2.1.1 Normal Stopping Procedure | 12 | | 2.2.1.2 Manual Stopping Procedure | 12 | | 2.2.2 Initializing the X.21 Processes | 13 | | 2.2.3 Network Definitions | 13 | | 2.2.4 The SINTRAN LOAD-MODE File | 15 | | 2.2.5 The SINTRAN HENT:MODE:MODE File | 16 |

| 3 HOW TO CONFIGURE THE COST PARAMETERS | 17 | | 3.1 Synopsis | 17 | | 3.2 The Cost Parameters | 17 | | 3.3 Call Charge Independent of Line Speed | 18 | | 3.4 Call Charge Dependent of Line Speed | 18 | | 3.5 Minimum Time Charge | 19 |

APPENDIX¶

| A | THE X.21 RELATED XMSG COMMANDS | 21 | | B | THE XMSG-COMMAND PROGRAM PARAMETERS | 53 |

| Index | 58 |

ND-30.033.01

Page 8¶

List of Figures¶

Title	Page
1. A Sketch of an X.21 Connection	1
2. Example of Two Connection Types	2
3. Protocol Relationship within a COSMOS Networking System	3
4. The COSMOS X.21 Option Protocols	4

ND-30.033.01

Page 9¶

List of Tables¶

Title	Page
1. The SINTRAN RT Names of the Different X.21 Processes	5
2. The Special X.21 Commands	8
3. The General XMSG Commands	9

ND-30.033.01

Page 10¶

List of Examples¶

Title	Page
1. The X21-NET-START:MODE File	10
2. Stopping the X.21 Network Server	12
3. Manual Stopping of the X.21 Processes	12
4. Initializing the Network Server	13
5. Initializing the X.21 Processes	13
6. Defining Names of Remote Systems	14
7. Starting the Network Server	14
8. Defining the Local Endpoint	15
9. Defining the Remote Endpoints	15
10. Defining the System Route	15

ND-30.033.01

Page 11¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION

1 INTRODUCTION¶

1.1 Synopsis¶

The first part of this chapter gives a short introduction to the CCITT network protocol X.21, starting with a section about system prerequisites.

The second part gives a short presentation of the COSMOS X.21 Product.

The last part outlines the different processes involved in the product.

1.2 The CCITT X.21 Standard¶

The CCITT X.21 Standard is a general purpose interface between Data Terminal Equipment (DTE) and Data Circuit terminating Equipment (DCE) for synchronous operation on public data networks. It is the so-called line switched network type.

Your responsibility	Carriers' responsibility
![DTE]	![DCE] X.21 Public Data Network
![DCX]

Figure 1. A Sketch of an X.21 Connection

The broken vertical line denotes the X.21 interface.

The X.21 system must always run on an ND-100 computer, or the 100 part of the ND-500 computer.

ND-30.033.01

Page 12¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION¶

The DTE may also be a gateway for a COSMOS LAN, where it will provide the users with the same functions as provided inside the LAN. This means that you can access any remote ND system in the X.21 network and use any of the following ND communication applications:

RTA - Remote Terminal Access
FA - File Access
FT - File Transfer
RS - Remote Spooling
etc.

The figure below illustrates two connection types:

Diagram

Figure 2. Example of Two Connection Types

Connection Diagram¶

Component	Description
ND	terminal
ND-100
COSMOS Local
Area Network
DCX
X.21 Public	Data Network

ND-30.033.01

Page 13¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION

1.3 The Different Processes of COSMOS X.21¶

In the figure below, the protocol relationship between the different products/processes in a COSMOS environment are sketched:

	Remote Spooling			Remote File Access	ND-MAIL
		File Trans.	TAD	T-Lib	XM Lib
		XMSG Transport Layer
		XMSG Network/Datagram Layer
	X.21 Network Server	X.25 Netw Server	XMSG XLAP (Mini LAPB)	Ethernet Network Server
		X25.3 (PL)
		X25.2 (LAPB)
X.21 Driv.	HDLC DMA Driver	Megalink Driver	Ethernet Driver

Figure 3. Protocol Relationship within a COSMOS Networking System

As shown in the figure above, COSMOS X.21 uses the same link level protocol, X25.2, as COSMOS X.25 Option. The CCITT term for the process is Link Access Procedure Balanced (LAP B).

ND-30.033.01

Page 14¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION¶

In the figure below, the relationships between the different processes in the COSMOS X.21 Option are shown:

+------------------------------------+
| XMSG Network/Datagram Layer        |
+------------------------------------+

+------------------------------------+
| COSMOS X.21 Network Server         |
| (The network server is active only |
| during the connection              |
| establishment phase)               |
+------------------------------------+

+-------+-------+-------+-------+
| CX21L0| CX21L1| CX21L2| CX21L3|
+-------+-------+-------+-------+
|          HDLC DMA Driver      |
+-------------------------------+

+----------------+ +----------------+ +----------------+ +----------------+
| HDLC Interf.   | | HDLC Interf.   | | HDLC Interf.   | | HDLC Interf.   |
| Card           | | Card           | | Card           | | Card           |
+----------------+ +----------------+ +----------------+ +----------------+

  DCX              DCX              DCX              DCX
  +----------------------------------------------------------+
  |                        X.21 Public Data Network          |
  +----------------------------------------------------------+

Figure 4. The COSMOS X.21 Option Protocols

When a connection is established (and no timeout has occurred), the data will flow directly between the XMSG Network/Datagram Layer and the network server, which sends the data to the link level process (CX21L0). The link level process will pass the data to the HDLC driver which handles the HDLC interface card.

The number of HDLC links must be specified when ordering SINTRAN. The maximum number will normally be 4 links. For details, see the Program Description document that comes with the system floppy diskettes.

ND-30.033.01

Page 15¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION

1.4 The Different X.21 Processes¶

The SINTRAN RT names of the different X.21 real-time processes are listed in the table below:

SINTRAN RT name	Type of process
X21NS	COSMOS X.21 Network Server
CX21L0	COSMOS X.21 Link Level process no. 0
CX21L1	COSMOS X.21 Link Level process no. 1
CX21L2	COSMOS X.21 Link Level process no. 2
CX21L3	COSMOS X.21 Link Level process no. 3
CX21LTM	COSMOS X.21 Link Timer process
CX21PF	COSMOS X.21 Power Failure process
CX21LG	COSMOS X.21 Log process

Table 1. The SINTRAN RT Names of the Different X.21 Processes

These SINTRAN RT processes (programs) above constitute the real-time environment of the COSMOS X.21 Option. Together with the HDLC interface card and the operating system prerequisites (i.e., SINTRAN drivers and special monitor calls) and COSMOS Basic Module, COSMOS X.21 Option offers the end user totally transparent solution.

In the following chapter we will explain the steps necessary to operate — start, stop and configure — a COSMOS X.21 Option network.

ND-30.033.01

Page 16¶

COSMOS X.21 Option Operator Guide¶

Page: 6

Document ID: ND-30.033.01

Page 17¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2 HOW TO START COSMOS X.21 OPTION¶

2.1 Synopsis¶

This chapter explains the XMSG commands necessary to operate the COSMOS X.21 Option.

After an introductory explanation of the XMSG command program, the different steps involved in the operation of X.21 are introduced sequentially.

2.1.1 System Prerequisites¶

Before reading any further, you should make sure you install your COSMOS X.21 Option properly.

This is explained in the Product Description document, that comes with the system floppy diskettes.

When you have loaded the system, include the command

@MODE X21INS-LOAD-SEGM:MODE,,,,

in the SINTRAH MENT-MODE file after XMSG has been loaded.

It is possible to follow the procedures explained in this chapter manually and step by step start the system.

2.1.2 The XMSG-COMMAND Program¶

This command program is the central tool of all COSMOS networking systems. The product XMSG binds together the different options available under the COSMOS 'umbrella' and its command program is the central tool for the system supervisor/operator.

ND-30.033.01

Page 18¶

2.1.3 Special X.21 XMSG Commands¶

The following XMSG commands are of special interest when operating the COSMOS X.21 Option:

Command
*Define-network-direct-connection
*Define-network-local-endpoint
*Define-network-remote-endpoint
*Define-network-remote-groupnumber
*List-network-local-endpoints
*List-network-remote-endpoints
*List-network-remote-systems
*Remove-network-local-endpoint
*Remove-network-remote-endpoint
*Remove-network-remote-groupnumber
*Remove-network-remote-system
*Start-network-server
*Stop-network-server
*Define-network-connection (only valid for version A of the COSMOS X.21 Option)

Table 2. The Special X.21 Commands

In addition, some general XMSG commands might prove useful. Such commands will be explained where they are used in the different examples.

Page 19¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

Here are the most important general commands:

Command
*Define-local-system
*Define-remote-name
*Exit
*Get-error-message
*Help
*List-links
*List-names
*List-routing-info
*List-systems
*Remove-system
*Set-advanced-mode
*Set-priveleged

Table 3. The General XMSG Commands

See appendix A for an extensive description of the different commands necessary to operate COSMOS X.21 Option. For a complete explanation of all the XMSG commands, see the COSMOS Operator Guide.

2.1.4 Explanation of Parameters¶

An explanation of the most commonly used input parameters to the XMSG-COMMAND program is included in Appendix B. All the special X.21 parameters are included.

2.2 The X21-NET-START:MODE File¶

In this section we will have a closer look at the X21-NET-START:MODE file. The different commands will be explained as they appear in the mode file. Below is an example of what the mode file may look like after all the substitutions explained in the Product Description document are done.

ND-30.033.01

Page 20¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

In the following example we assume that SEGMENT 301 contains data and the TPS buffer pool. The network server, X21NS, is loaded onto SEGMENT 302 and the link level routines are loaded onto SEGMENT 303.

@(UTILITY)XMSG-COMMAND:PROG
STOP-NETWORK-SERVER X21NS,,
EXIT
@ABORT X21NS
@ABORT CX21L0
@ABORT CX21L1
@ABORT CX21LTM
@ABORT C25LG
@CC Set TOILG. Defined in file X25C-LOGRTN
@LOOK-AT SEG 303
113772/1

@CC Start X.21 network server
@LOOK-AT SEG 301
2064/0
0

@RT X21NS
@HOLD 0,0
@HOLD 5,2
@CC Allow Connect from both sides
@LOOK-AT SEG 303
125060/1
127756/1

@RT CX21L0
@RT CX21L1
@(UTILITY)XMSG-COMMAND:PROG
SET-PRIVILEGED
H cc Define remote systems
DEFINE-REMOTE-NAME,,DOLE, 284
DEFINE-REMOTE-NAME,,ND-284, 284
DEFINE-REMOTE-NAME,,KLARA, 400
DEFINE-REMOTE-NAME,,ND-400, 400
H cc Start X.21 network server
START-NETWORK-SERVER,X21NS,,,Y
H cc Define connections to the public network
Define-net-local-endpoint X21NS,,,,,Y,1273,1370,48,100736,,
Define-net-remote-endpoint DOLE,X21NS,,100113,200,128,0,48
Define-net-remote-endpoint KLARA,X21NS,,100104,200,128,0,48
DEFINE-SYSTEM-ROUTE,,ORION,DOLE
EXIT
@cc END OF FILE

| Example 1. The X21-NET-START:MODE File |

Note that this is only an example, but it is based upon the startup mode file on the system floppy diskettes. The system included startup mode file may change, so you must compare it to the example above before beginning to include your own connection definitions.

ND-30.033.01

Page 21¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

The mode file should be called from the SINTRAN LOAD-MODE file after the XMSG startup mode file has been run. This is explained in the Program Description document.

@MODE (UTILITY)X21NS-NET-START:MODE...

It is impossible to start the COSMOS X.21 Option before XMSG has been started.

It is possible to define a new connection by giving the appropriate commands in the XMSG-COMMAND program. But each time the system is stopped, SINTRAN is restarted (warmstart) or XMSG is restarted, you have to give the same sequence of commands again to be able to reestablish your connection. Permanent connections should thus be defined in the X21NS-NET-START:MODE file.

In the following sections we will look at the different commands given in the startup mode file, explaining them in a way which should make you capable of configuring your X.21 system after your needs. The different commands are explained in the same sequence as they appear in the startup mode file.

In the examples below we assume that the commands are executed manually. All user input is underlined. For a complete explanation of the parameters see Appendices A and B.

2.2.1 How to Stop the X.21 System¶

There are two ways of stopping the X.21 system. The normal way is to give the XMSG command Stop-network-server, which will perform a normal closedown of the system. This is shown in the next section. In the following section we will explain how to stop the system if the Stop-network-server command does not work.

ND–30.033.01

Page 22¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2.2.1.1 Normal Stopping Procedure¶

Normal stopping of the X.21 system is done as follows:

@(UTILITY)XMSG-COMMAND:PROG ␍
XMSG command program (ND-10130/10373H) of 84.01.14 09:13
Compiled for version 1983.07.13 (Release H)
XMSG Kernel version 1983.07.13 (Release H)
Options:
    ND-100 only. PIT3. Trace.
    Inter-system: File server. Network gateway.

X-C:STOP-NETWORK-SERVER X21NS␍
*- Warning: You can now bypass system protection mechanisms -*
OK

X-C:_

Example 2. Stopping the X.21 Network Server

When the network server is stopping a message, saying that the network server has stopped, is printed on the SINTRAN error device (console).

2.2.1.2 Manual Stopping Procedure¶

In some special situations it may not be possible to stop the X.21 system with the Stop-network-server command. Then you must abort the different processes manually, using the SINTRAN command ABORT. This is shown in the example below:

@ABORT X21NS␍
@ABORT CX2110␍
@ABORT CX2111␍
@ABORT CX211TM␍
@ABORT C251LG␍

Example 3. Manual Stopping of the X.21 Processes

The different RT programs names are abbreviations (or acronyms) for the process names. See chapter 1.

ND-30.033.01

Page 23¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

When the manual procedure has been used, you must patch one location (resetting a counter) on the segment 301 (the segment containing data and the TPS buffer pool). The procedure is shown below:

@LOOK-AT SEG 301
2064/ 0 0
0

Example 4. Initializing the Network Server

2.2.2 Initializing the X.21 Processes¶

When the network server has been initialized, the next step is to start the X.21 processes:

@RT X21NS
@CC Allow CONNECT from both sides
@LOOK-AT SEG 303
12506/ 0 1
12775/ 0 1

@RT CX21L0
@RT CX21L1

Example 5. Initializing the X.21 Processes

The reason for allowing CONNECT from both sides, which is not standard LAPB, is to speed up the establishment of a logical connection. One specified location for each link level routine must be patched (by changing its value from 0 to 1). In the example above, only two link level routines are used. In the standard X21NS-NET-START:MODE file, where four link level processes are used, four locations are patched.

2.2.3 Network Definitions¶

When all the processes have been successfully initialized or started, the next step is to define to the system the different names and DTE numbers of the systems in the network you want to establish a connection with. You must also identify to your own system your own DTE number(s).

The name of the local system is previously defined in the XMSG-START:MODE file.

ND-30.033.01

Page 24¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

Firstly you must start the XMSG-COMMAND program and define the COSMOS names of the remote X.21 systems:

@{UTILITY}XMSG-COMMAND:PROG ↵

XMSG command program (ND-10130/10373H) of 84.01.14 09:13
Compiled for version 1983.07.13 (Release H)
XMSG kernel version 1983.07.13 (Release H)
Options:
ND-100 only. PIT3. Trace.
Inter-system: File server. Network gateway.

X-C:
X-C:SET-PRIVILEGED ↵
OK

X-C:DEFINE-REMOTE-NAME,DOLE,123 ↵
OK

X-C:DEFINE-REMOTE-NAME,,KLARA,321 ↵
OK

X-C:_

Example 6. Defining Names of Remote Systems

The next step is to start the network server.

X-C:START-NETWORK-SERVER,X21NS,,,Y ↵
OK

X-C:_

Example 7. Starting the Network Server

ND-30.033.01

Page 25¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

When the network server has been started successfully, you must define connections to the public network. Firstly you must identify to the system its own DTE number(s). At the same time you specify some of the configuration parameters. For a detailed description of the parameters, see Appendices A and B. All the DTE numbers used in this manual is fictious.

X-C:Define-net-local-endpoint X21NS,,,,,X,1273.1370.48.123456,,
OK
X-C:

Example 8. Defining the Local Endpoint

After the local endpoint has been defined, you must identify the remote endpoints:

X-C:Define-net-remote-endpoint DOLE,X21NS,,123457.200.128.0.48 ↵
OK
X-C:Define-net-remote-endpoint KLARA,X21NS,,123458.200.128.0.48 ↵
-----------------------------------------------------------------
OK
X-C:

Example 9. Defining the Remote Endpoints

The last step is to define the route to the system(s) at the remote end. These systems may also be beyond the remote X.21 gateway system.

X-C:DEFINE-SYSTEM-ROUTE,,ORION,DOLE ↵
OK
X-C:EXIT ↵
@

Example 10. Defining the System Route

2.2.4 The SINTRAN LOAD-MODE File¶

You should include the command:

@MODE,X21NS-NET-START:MODE,,

ND-30.033.01

Page 26¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

in the SINTRAN LOAD-MODE:MODE file after XMSG has been started. If your XMSG-START:MODE file include a general LIST-ROUTING-INFO listing, you should include the MODE command in the XMSG-START:MODE file before the LIST-ROUTING-INFO command.

2.2.5 The SINTRAN HENT-MODE:MODE File¶

As explained previously, you should include the command:

@MODE X21NS-LOAD-SEGM:MODE,,

after XMSG has been loaded.

Page 27¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO CONFIGURE THE COST PARAMETERS¶

3 HOW TO CONFIGURE THE COST PARAMETERS¶

3.1 Synopsis¶

This chapter gives an outline of how to determine the cost parameters according to the different tariff structures yielding in different countries.

Information about the tariff structure yielding in your country should accompany the subscription agreement documents, issued by your local common carrier (PTT).

3.2 The Cost Parameters¶

The three parameters connect_charge, connect_cost and connect_time of the command Define-network-remote-endpoint are all tied together in a way which is dependent of the tariff structure used by the PDN.

This implies that the meaning of a parameter may differ, depending on the differences in tariff structures. To be able to choose the correct strategy for your network system, you must consult your local PDN authority (common carrier).

In the following sections the three different cost parameters will be explained. It is important to be aware that it is the relationship between the parameters which determines the systems costs strategy, and not the different parameters by themselves.

The three parameters are all integers, subsequently you must transform your local currency into integers. In addition the parameter connect cost must be multiplied by 100 when used. This means that if the connect cost is 22, you must enter 2200.

In this manual, we define currency as the currency unit used in the different national tariffs. The currency unit in Germany is Pfennig. In Norway, Sweden and Denmark, the currency unit is øre (oere).

Generally we can say that the connect charge is what you have to pay for establishing (or trying to establish) a connection. The Connect cost is what you have to pay for keeping an active connection.

The names of the three parameters are:

Parameter	Unit	Type
Connect charge	(100*currency)	Integer
Connect cost	(currency/minute)	Integer
Connect time	(Basic Time Units)	Integer

In the following three sections we will give the three most important tariff structures.

ND-30.033.01

Page 28¶

3.3 Call Charge Independent of Line Speed¶

Call charge independent of the line speed means that the cost is independent of the transmission speed of the lines used in a connection.

Then you should use only two of the three cost parameters below:

Parameter	Description
`<connect charge>`	the charge specified in the tariffs.
`<connect cost>`	the cost specified in the tariffs.
`<connect time>`	not used (i.e., zero).

It is important to remember that when one of the parameters is not used, it must always be zeroed.

3.4 Call Charge Dependent of Line Speed¶

If the call charge depends on the line speed, this is what you should input in the costs parameters:

Parameter	Description
`<connect charge>`	not used (i.e., zero).
`<connect cost>`	the cost specified in the tariffs.
`<connect time>`	the ratio between charge specified in the tariffs and the cost specified in the tariffs. This value then gives time equivalent to the call charge. This value must be preceded with a minus sign ('-').

The formula to calculate the parameter <connect time> is as follows:

[ \text{} = \frac{\text{charge specified in tariffs}}{\text{cost specified in tariffs}} ]

Note that the charge specified in the tariffs in the formula above, must not be multiplied by the constant (i.e., 100) used when giving the parameter <connect charge>.

ND-30.033.01

Page 29¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO CONFIGURE THE COST PARAMETERS¶

3.5 Minimum Time Charge¶

If the user is accounted for a minimum time (instead of a call charge), then the costs parameters should contain the following values:

Parameter	Description
\<connect charge>	\<connect cost> times \<connect time> (must be specified).
\<connect cost>	The cost specified in the tariffs.
\<connect time>	The minimum time the user will be charged for.

ND-30.033.01

Page 30¶

COSMOS X.21 Option Operator Guide¶

ND-30.033.01

Page 31¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

APPENDIX A¶

ND-30.033.01

Page 32¶

COSMOS X.21 Option Operator Guide¶

Page intentionally left blank.

ND-30.033.01

Page 33¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: CLEAR-PRIVILEGED¶

No:	Parameter Name:	Default Value:
1

Rules: Only permitted for user SYSTEM.

Related Commands:
Set-privilege
Set-advanced

Function: Clears the state set by the command Set-privileged.

ND-30.033.01

Page 34¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: DEFINE-LOCAL-SYSTEM¶

No:	Parameter Name:	Default Value:
1	(system number)	(local system)

Rules: Only permitted for user SYSTEM. Not necessary to use in XMSG version I or later (when using SINTRAN version H or later), because system number is given to XKOUT when XKOUT is initialized. It is illegal to redefine the local system.

Related Commands: - List-systems - List-names - List-routing-info

Function: This command defines in own system tables the identity of the local system in its own system tables.

Page 35¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command Name: DEFINE-NETWORK-DIRECT-CONNECTION¶

No:	Parameter Name:	Default Value:
1	\<server name>
2	\<system name>	\<local system>
3	\<remote DTE address>
4	\<speed (x100 baud)>
5	\<own DTE address>

Rules:
Only permitted for user SYSTEM. Applies only to the COSMOS X.21 Option.

Related Commands:
Define-network-local-endpoint
Define-network-remote-endpoint

Function:
If the additional service Direct Call is ordered, this command must be executed in order to give the network server the necessary additional information.

ND-30.033.01

Page 36¶

Command name: DEFINE-NETWORK-LOCAL-ENDPOINT¶

No.	Parameter Name	Default Value
1	{server name}
2	{server system}	{local system}
3	{Charging Request}
4	{Called line identification}
5	{Direct call}
6	{Calling line identification}
7	{X.21 Logical Unit Number}
8	{HDLC Logical Unit Number}
9	{speed (x100 baud)}
10	{Own DTE address}

Rules: Only permitted user SYSTEM. Applies only to COSMOS X.21 Option.

Related Commands:
Remove-network-local-endpoint
List-network-local-endpoint

Function: This command defines the local endpoint of the X.21 based public network in own system tables.

An explanation of the four X.21 facilities parameters is included on the next page.

ND-30.033.01

Page 37¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

EXPLANATION: The four parameters, <Charging request>, <Called line identification>, <Direct call>, and <Calling line identification> are all called X.21 facilities. They may all be looked upon as switches, and may only be answered with yes or no.

Parameter	Description
Charging request	The purpose of this facility is to give the DTE (your endpoint) charging information about the different connections which it is debited for. Used in connection with charge transfer.
Called line identification	The purpose of this facility is to give the calling DTE (your endpoint) the identification of the called DTE.
Direct Call	The purpose of this facility is to simplify the call procedure when only one connection is used. Your endpoint will always call the same remote DTE when this service is used.
Calling line identification	The purpose of this facility is to give the called DTE (your endpoint) the identification of the calling DTE, making it possible for the called DTE to deny a connection before it is fully established.

Remember that the X.21 facilities prompts may only be answered by Yes or No.

All of the X.21 facilities are additional services. The purpose of this group parameter is to inform the network server that they are provided by the PTT and that you want to make use of these additional services.

Page 38¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name : DEFINE-NETWORK-REMOTE-ENDPOINT¶

No:	Parameter Name:	Default Value:
1	\
2	\
3	\	\
4	\
5	\
6	\
7	\
8	\

Rules¶

Only permitted user system. The command applies only to COSMOS X.21 Option.

Remove-network-remote-endpoint
Remove-network-remote-system

Function¶

This command defines the remote system as an endpoint of the network in your own system tables.

Page 39¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: DEFINE-NETWORK-REMOTE-GROUPNUMBER¶

No:	Parameter Name:	Default Value:
1	\
2	\
3	\	\
4	\
5	\

Rules: Only permitted for user SYSTEM. Applies only to the COSMOS X.21 Option.

Related Commands: - Remove-network-remote-groupnumber - Define-network-remote-endpoint

Function: This command defines the groupnumber received by the remote site when ordering the additional service, 'Multiple lines at the same address'.

The parameter \ is the groupnumber of the remote endpoint.

The purpose of this command is to inform your network server that the remote system has multiple lines at the same address. Incoming calls are then directed to any of the (4) lines, depending on their availability, at the remote site.

Page 40¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: DEFINE-REMOTE-NAME¶

No	Parameter Name	Default Value
1	\	\
2	\
3	\

Rules: Only permitted for user SYSTEM. XROUT system must be local.

Related Commands: List-names

Function: This command defines a remote system name in the local system tables.

To delete a name entry in the local XMSG name tables, you just give the system name and answer the third parameter, \, with carriage return (CR).

ND-30.033.01

Page 41¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: DEFINE-SYSTEM-ROUTE¶

No.	Parameter Name	Default Value
1	`<XROUT system>`	`<local XROUT system>`
2	`<system>`
3	`<via system>`

Rules¶

Only permitted for user SYSTEM. The XROUT system must be the local (default) system. The names of the different systems must be defined in local name tables.

List-routing-info

Function¶

The command updates the local system routing tables.

EXPLANATION¶

In the example above, the <via system> parameter may be any system on the route to specified <system>. The routing to (and name of) the <via system> parameter must be known by your local system. The name of the target system must also be defined in own system tables. It is not necessary to define the route to an adjacent system.

Page 42¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: EXIT¶

No	Parameter Name	Default Value
1	(NO PARAMETERS)

Rules: Available to all user categories.

Function: Terminates the XMSG-COMMAND program and returns the user to SINTRAN.

ND-30.033.01

Page 43¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name:	GET-ERROR-MESSAGE

No:	Parameter Name:	Default Value:
1	{Error value (dec)}

Rules¶

Available to all user categories.

Function¶

This command displays the error message corresponding to the XMSG error value given in the input parameter.

Legal input parameters are negative error code and Standard Error Codes (SEC's).

ND-30.033.01

Page 44¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: HELP

No:	Parameter Name:	Default Value:
1	\<commands>	\<all commands>

Rules: Available to all user categories.

Related Commands: Set-advanced

Function: List all commands available to the user if default input parameter is given. If the input parameter \<commands> is specified, a subset of commands (if any) matching the given input will be displayed.

ND-30.033.01

Page 45¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: LIST-LINKS¶

No:	Parameter Name:	Default Value:
1	\	\

Rules: Only permitted user SYSTEM.

Related Commands:
Start-link
Stop-link
Start-network-server
Stop-network-server

Function: This command is used to list the current status of all links being used by XMSG. This means those started by the START-LINK or the START-NETWORK-SERVER commands. You may specify either XMSG link index or link block address.

A link reserved by a network server is a virtual link. The System Identification (Sysid) then refers to a virtual system within the local system and Sysid will be in the range of 9800 to 9803. Further, the figure in the LUN column, is the XMSG Port number and not the SINTRAN Logical Unit Number. The columns giving HDLC information, (Rcv, Xmit, Hard stat), will always be zero.

Turn to the next page for an explanation of the output listing.

ND-30.033.01

Page 46¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

EXPLANATION: In the table below, the output information of the command List-links is explained.

Term	Description
No	link index in XMSG
Addr.	of link block (XL-block)
State	of connection to adjacent system. Values are:
	DEAD - crashed (fatal timeout or hardware error)
	INIT - being initialised (purely internal)
	CALL - trying to make contact with neighbour
	CONN - contact made.
	RUN - data phase.
Sysid	of neighbour (CONN and RUN states only!)
Rcv	last HDLC A/C bytes received (0 if netw.serv. NS)
Xmit	last HDLC A/C bytes transmitted (0 if netw.serv. NS)
Lun	SINTRAN Logical Unit No (Octal) (Virt.sys.no. if NS)
Timeout	Timeout value in XTU's and counter value
Soft-stat	HDLC software status (should be zero)
-hard	HDLC Hardware status (should be zero)
TXData	Number of DATA frames transm. since last startlink
Retry	Number of retransmits
RXBad	Number of bad frames received (CRC error, etc.)

Note: You should note that the meanings of some of the parameters are different when the link has been reserved by a network server. Then the link is a virtual link and the system is a virtual system.

ND: 30.033.01

Page 47¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: LIST-NAMES¶

No:	Parameter Name:	Default Value:
1

Rules: Available to all users.

Related Commands: List-systems

Function: This command asks an XROUT system to dump out its name table, listing the system, port number and number of free service points for each name in XROUT's tables.

In an inter-system configuration, the command allows access to any XROUT, so the first prompt asks for the system number where the XROUT program is to be found. (Default is local.)

EXPLANATION:¶

The output parameters of this command is:

System - System number
Port - XMSG port number
Free SPs - Number of free XMSG Service Points
Name - Remote system or port name

It is not possible to specify a virtual system.

ND-30.033.01

Page 48¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command Name: `LIST-NETWORK-LOCAL-ENDPOINTS`¶

No.	Parameter Name	Default Value
1
2

Rules: Available to all users. Applies only to the COSMOS X.21 Option. Not implemented in the B version of COSMOS X.21 Option.

Related Commands:
- List-network-remote-endpoints
- Define-network-local-endpoints

Function: This command lists all local endpoints defined in your own system tables.

EXPLANATION¶

In the table below, an explanation of the different columns in the output listing is given:

DTE number - Data Terminal Equipment number of local endpoint.
X.21 LUN - X.21 Logical Unit Number
HDLC LUN - SINTRAN HDLC input Logical Unit Number
Speed (BPS) - Speed in Bits per Second (baud)
IDA - Calling line identification Yes or No (Identification A terminal)
IDB - Called line identification Yes or No (Identification B terminal)
Charg.info - Charging Information Yes or No
Direct call - Direct call Yes or No

The four last parameters are all defined in the parameter in the command DEFINE-NETWORK-LOCAL-ENDPOINT.

Page 49¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command Name: LIST-NETWORK-REMOTE-ENDPOINTS¶

No:	Parameter Name:	Default Value:
1	\<server name>
2	\<system name>	\<local system>
3	\<remote system number>
4	\<speed (x100 BPS)>

Rules: Available to all users. Applies only to COSMOS X.21 Option. Not implemented in the B version of COSMOS X.21 Option.

Related Commands: List-network-remote-systems

Function: This command lists all remote endpoints defined in own system tables.

EXPLANATION:¶

System: Remote system number
Name: Remote system name
DTE number: Remote DTE number
Speed (BPS): Speed in Bits Per Second (baud)

ND-30.033.01

Page 50¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: LIST-NETWORK-REMOTE-SYSTEM¶

No	Parameter Name	Default Value
1	\
2	\	\

Rules: Available to all users. Applies only to COSMOS X.21 Option. Not implemented in the B version of COSMOS X.21 Option.

Related Commands: List-network remote-endpoints

Function: This command lists all remote systems defined in your own system tables.

EXPLANATION: Description of output information:¶

System number - Remote system number
System name - Remote system name
No. of DTEs - Number of DTEs connected to remote system
Group number - Remote group number
Dir. Call - Direct Call (Yes or No)
Conn charge - Connect charge (Dial up cost). Relative value.
Conn cost - Connect cost. Relative value.
Conn time - Connect time. Minimum connect time.
Max idle time (ms) - Maximum idle time before disconnection

ND-30.033.01

Page 51¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name : LIST-ROUTING-INFO¶

No	Parameter Name:	Default Value:
1	\<from system>	\<local system>
2	\<to system>	\<all systems>

Rules: Available to all user categories.

Related Commands: Define-system-route
Remove-system-route

Function: This command lists the routing tables and checks the connections. The parameters \<from system> and \<to system> are both of type 'system' which means that 'system number' or 'system name' may be specified.

The command checks the network by sending connection requests to the remote system(s). It is advisable to identify the name of the \<to system> if you have a lot of connections through a WAN. This is because of the fact that a public data network may be congested, so it may take minutes to get a complete list.

EXPLANATION: Explanation of output parameters:¶

Path according to local tables - this is how the route is defined on the system given in the \<from system> input parameter.

Path according to tables - this is how the route is defined on the system specified in the input parameter (via system) of the command DEFINE-SYSTEM-ROUTE and the following systems (if any).

Actual path - The actual path of the connection. The 'actual path' and 'path according to tables' should be the same. All systems on the route to the target system will be listed here.

ND-30.033.01

Page 52¶

Command name: LIST-SYSTEMS¶

No:	Parameter Name:	Default Value:
1	\	\

Rules: Only permitted for user system if XMSG is older than version H.

Related Commands:
List-names
List-routing

Function: Lists the system(s) that are defined in the local system's tables.

Explanation¶

Description of the information listed:

Address: Address of system block descriptor
Sysno: System Number identificator
State: >0 if connected, if <0, timeout while waiting for INIT.
Link: Address of link block descriptor.
Subaddr: Parameter to Network Server to find the way.
Send-seq-recv: Send and receive sequence numbers for secure messages
Hops: Number of LANs and WAN hops to this system (if state >0)

If the link is a virtual link to a network server, Sysno and Subaddr will display the same system number. This is because Sysno and Subaddr then identify a virtual system within the local system.

Page 53¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

No:	Parameter Name:	Default Value:
1	⟨server name⟩
2	⟨system name⟩	⟨local system⟩
3	⟨Own DTE address⟩

Rules: Only permitted for user SYSTEM. Applies only to the COSMOS X.21 Option.

Related Commands: Define-network-local-endpoint
List-network-local-endpoint

Function: This command removes a local endpoint of the X.21 based public network from your own system tables.

ND-30.033.01

Page 54¶

Command Name: REMOVE-NETWORK-REMOTE-ENDPOINT¶

No	Parameter Name	Default Value
1	{server name}
2	{server system}	{local system}
3	{remote DTE address}

Rules: Only permitted user SYSTEM. Applies only to COSMOS X.21 Option.

Related Commands: - Define-network-remote-endpoint - Remove-network-remote-system - List-network-remote-endpoint

Function: An endpoint of the X.21 based public network installed in a remote system is removed from own system tables.

Page 55¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: REMOVE-NETWORK-REMOTE-GROUPNUMBER¶

No:	Parameter Name:	Default Value:
1	{remote system}
2	{server name}
3	{server system}	{local system}
4	{speed (x100 BPS)}

Rules: Only permitted for user SYSTEM. Applies only to the COSMOS X.21 Option.

Related Commands: - Define-network-remote-groupnumber - Remove-network-remote-system - Remove-network-remote-endpoint

Function: This command removes the groupnumber defined by the command Define-network-remote-groupnumber.

ND-30.033.01

Page 56¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: REMOVE-NETWORK-REMOTE-SYSTEM¶

No.	Parameter Name:	Default Value:
1	\
2	\
3	\	\

Rules: Only permitted for user SYSTEM. Applies only to the COSMOS X.21 Option.

Related Commands:
Define-network-remote-endpoint
Remove-network-remote-endpoint
List-network-remote-system

Function: All the endpoints of the X.21 based public network installed in the remote system are removed from your own system tables. The remote system itself is also removed from your own system tables.

Page 57¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: REMOVE-SYSTEM¶

No	Parameter Name	Default Value
1	\	\
2	\

Rules¶

Only permitted for user SYSTEM. It is illegal to specify an XROUT system other than your own.

List-routing-info

Function¶

This command removes the entries of the specified system in the routing tables of your local system. It does not remove the entry in the name table. To remove an entry in the name tables, see the command Define-remote-name.

ND-30.033.01¶

Page 58¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: SET-ADVANCED

No:	Parameter Name:	Default Value:
1

Rules: Available to all user categories.

Related Commands: Set-privileged

Function: Sets the advanced user context. This means that all commands are listed when typing HELP. The command does not let you use privileged commands.

ND-30.033.01

Page 59¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: SET-PRIVELEGED¶

No:	Parameter Name:	Default Value:
1	(NO PARAMETERS)

Rules: Only permitted for user SYSTEM.
Related Commands: Clear-privileged, Set-advanced
Function: This command gives user SYSTEM the right to use privileged functions without getting warnings printed on the screen each time privileged commands are used.

ND-30.033.01

Page 60¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name : START-NETWORK-SERVER¶

No:	Parameter Name:	Default Value:
1	`<server name>`
2	`<system name>`	`<local system>`

Rules: Only permitted for user SYSTEM. Applies to any of the COSMOS Network Options.

Related Commands: Stop-network-server

Function: This command starts the specified COSMOS network server.

Page 61¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Command name: STOP-NETWORK-SERVER¶

No	Parameter Name	Default Value
1	\<server name>
2	\<system name>	\<local system>

Rules: Only permitted for user SYSTEM. Applies to any of the COSMOS Network Options.

Related Commands: Start-network-server

Function: This command stops the specified COSMOS network server.

Page 62¶

COSMOS X.21 Option Operator Guide¶

ND-30.033.01

Page 63¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

APPENDIX B¶

THE XMSG-COMMAND PROGRAM PARAMETERS¶

ND-30.033.01

Page 64¶

I'm unable to convert the blank page. If you have another document with text, feel free to share it!

Page 65¶

Special X.21 Parameters¶

Parameter	Description
`<connect charge>`	In local currency times 100. Local currency must be given as an integer. Further explanation is included in the chapter about costs.
`<connect cost>`	In local currency per minute. Further explanation is included in the chapter about costs.
`<connect time>`	In basic time units (seconds times 50). Further explanation is included in the chapter about costs.
`<HDLC LUN in>`	Logical Unit Number for HDLC input part.
`<X.21 LUN>`	Logical Unit Number for the X.21 datafield.
`<own DTE address>`	DTE number of the DCE-X connected to the public network. ASCII string. Maximum 15 characters (digits) length.
`<remote DTE address>`	DTE number of the remote DCE-X connected to the public network. ASCII string. If the remote system is outside your country, remember the international prefix and leading zeroes if any. May also be the groupnumber of several lines.
`<remote system number>`	Name or number of remote system.
`<server name>`	Name of the server to be started (no default name). The standard name for the X.21 network server is X21NS.
`<server system>`	The system on which the server is to be operated (started or stopped).
`<speed (x100 BPS)>`	Speed rate in Bits per Second (BPS) given as one percent of the transmission speed. To select the speed rate 9600 bps, enter 96. Range is 1200 to 9600. (12 to 96)

Page 66¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

THE XMSG-COMMAND PROGRAM PARAMETERS¶

¶

Additional services:¶

Charging request
Same as Charge Advice. The purpose of this facility is to give the subscriber cost information.

Called line identification
This facility gives the calling DTE the identity of the called DTE.

Direct Call
This facility simplifies the call procedure when only one connection is required.

Calling line identification
The purpose of this facility is to give the called DTE the identity of the calling DTE.

ND-30.033.01

Page 67¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

THE XMSG-COMMAND PROGRAM PARAMETERS¶

General XMSG-COMMAND Parameters¶

Parameter	Description
`<commands>`	Used in the HELP command. Default value is all commands.
`<error value (dec.)>`	Used in the GET-ERROR-MESSAGE command. Value less than zero will list XMSG Error Message. A positive value will list XMSG Crash Message. Decimal notation. You may also use SEC's.
`<from system>`	Used in the LIST-ROUTING command. Same as the `<system>` parameter.
`<record address>`	Used in different LIST- commands. Octal numbers.
`<server name>`	Name of the network server (ie., X21NS or X25NS).
`<system name>`	Name of the system (ie., OBELIX or ND-666).
`<system number>`	Number of the system (ie., 685, 10102).
`<system>`	This parameter will accept either `<system name>` or `<system number>`.
`<to system>`	Used in the LIST-ROUTING command. Same as the `<system>` parameter.
`<XROUT system>`	Used in different commands. You are only allowed to specify the local XROUT system in XMSG version H or later. This does not apply to LIST commands.

ND-30.033.01

Page 68¶

Index¶

Term	Page
buffer pool	10
called line	56
calling line	56
CCITT	1
X.21	1
charging request	56
Clear-privileged	23
cold start	16
communication applications	2
connect
charge	17, 55
cost	17, 55
time	17, 55
connection types	2
COSMOS LAN	2
cost
charge	17
parameters	17
counter resetting	13
currency	17
data segment	10
DCE	1
Define-local-system	24
Define-network-direct-connection	25
Define-network-local-endpoint	26
Define-network-remote-endpoint	28
Define-network-remote-groupnumber	29
Define-remote-name	30
Define-system-route	31
direct call	56
DTE	1
error value	57
Exit	32
FA	2
File
Access	2
transfer	2
from system	57
FT	2
gateway	2
general XMSG	9
Get-error-message	33
HDLC	4
LUN	55
Help	34
HENT-MODE:MODE	16
identification	56
initializing X21NS	13
LAN	2
LAP B	3
line
speed	18

ND-30.033.01

Page 69¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

Index¶

Term	Page
switched	1
Link Access	3
links	4
List-links	35
List-names	37
List-network-local-endpoints	38
List-network-remote-endpoints	39
List-network-remote-system	40
List-routing-info	41
List-systems	42
LOAD-MODE:MODE	15
Local Area	2
name definitions	14
own DTE	55
PDN	1
PTT	17
Public Data	1
record address	57
RcmoTe
DTE	55
Spooling	2
system	55
Terminal	2
Remove-network-local-endpoint	43
Remove-network-remote-endpoint	44
Remove-network-remote-groupnumber	45
Remove-network-remote-system	46
Remove-system	47
resetting counter	13
restart	11, 15
RS	2
RT names	5
RTA	2
server
name	55, 57
system	55
Set-advanced	48
Set-priveleged	49
special XMSG	8
speed	55
Start-network-server	50
starting	13
Stop-network-server	51
stopping X.21	11
system	57
name	57
number	57
prerequisites	7
tariff structures	17
to system	57
twoway connect	13
warn start	15

ND-30.033.01

Page 70¶

SEND US YOUR COMMENTS!!!¶

Please let us know if you - find errors - cannot understand information - cannot find information - find needless information

Do you think we could improve the manual by rearranging the contents? You could also tell us if you like the manual!

Are you frustrated because of unclear information in this manual? Do you have trouble finding things? Why don't you join the Reader’s Club and send us a note? You will receive a membership card — and an answer to your comments.

HELP YOURSELF BY HELPING US!!¶

Manual name:	COSMOS X.21 Option Operator Guide
Manual number:	ND-30.033.01

What problems do you have? (use extra pages if needed)

Do you have suggestions for improving this manual?

Your name:	Date:

Company:	Position:

Address:

What are you using this manual for?

NOTE!¶

This form is primarily for documentation errors. Software and system errors should be reported on Customer System Reports.

Send to:¶

Norsk Data A.S
Documentation Department
P.O. Box 25, Bogerud
Oslo 6, Norway

Norsk Data’s answer will be found on reverse side.

Page 71¶

Answer from Norsk Data¶

Answered by _______ Date _____

Norsk Data A.S
Documentation Department
P.O. Box 25, Bogerud
Oslo 6, Norway

Page 72¶

I'm unable to process this image. Could you provide a different one?

Page 1¶

COSMOS X.21 Option¶

Operator Guide¶

Page 2¶

COSMOS X.21 Option¶

Operator Guide¶

Page 3¶

NOTICE¶

Page 4¶

PRINTING RECORD¶

Page 5¶

Manual Updates¶

Documentation Department¶

Page 6¶

Preface¶

THE PRODUCT¶

THE READER¶

PREREQUISITE KNOWLEDGE¶

RELATED MANUALS¶

Page 7¶

TABLE OF CONTENTS¶

APPENDIX¶

Page 8¶

List of Figures¶

Page 9¶

List of Tables¶

Page 10¶

List of Examples¶

Page 11¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

1 INTRODUCTION¶

1.1 Synopsis¶

1.2 The CCITT X.21 Standard¶

Page 12¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION¶

Connection Diagram¶

Page 13¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

1.3 The Different Processes of COSMOS X.21¶

Page 14¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

INTRODUCTION¶

Page 15¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

1.4 The Different X.21 Processes¶

Page 16¶

COSMOS X.21 Option Operator Guide¶

Page 17¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2 HOW TO START COSMOS X.21 OPTION¶

2.1 Synopsis¶

2.1.1 System Prerequisites¶

2.1.2 The XMSG-COMMAND Program¶

Page 18¶

2.1.3 Special X.21 XMSG Commands¶

Page 19¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2.1.4 Explanation of Parameters¶

2.2 The X21-NET-START:MODE File¶

Page 20¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

Page 21¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2.2.1 How to Stop the X.21 System¶

Page 22¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2.2.1.1 Normal Stopping Procedure¶

2.2.1.2 Manual Stopping Procedure¶

Page 23¶

COSMOS X.21 OPTION OPERATOR GUIDE¶

HOW TO START COSMOS X.21 OPTION¶

2.2.2 Initializing the X.21 Processes¶

2.2.3 Network Definitions¶

Page 24¶