3274

 

AS/400

AS/400

Sequence

 

Prompt

Parameter

Number

Notes

 

 

 

 

Connection

CNNNBR

411

3274 DTE Address

number

 

 

For X.25 SVCs, the connection number specified on the

 

 

 

 

 

 

CRTCTLRWS command and in sequence number 411 must

 

 

 

match.

 

 

 

 

Exchange

EXCHID

215

Physical Unit Identification

identifier

 

 

For switched connections, the 5-digit hexadecimal value specified

 

 

 

 

 

 

for sequence number 215 must match the last 5 digits of the

 

 

 

exchange identifier specified on the CRTCTLRWS command.

 

 

 

 

X.25 link

LINKPCL

403

Logical Link Control

protocol

 

 

For X.25 connections, values specified must match. Specify

 

 

 

 

 

 

LINKPCL(*QLLC) on the CRTCTLRWS command; specify 1

 

 

 

(QLLC) for sequence number 403.

 

 

 

 

Link type

LINKTYPE

331

BSC/SDLC/X.25 Protocol

 

 

 

Values specified on the CRTCTLRWS command and in

 

 

 

sequence number 331 must match as follows:

 

 

 

v If LINKTYPE(*SDLC), 331 = 1

 

 

 

v If LINKTYPE(*X25), 331 = 2

Local network

NETADR

410

Host DTE Address (HNAD)

address

 

 

For X.25 SVCs, the network address specified on the

 

 

 

 

 

 

CRTLINX25 command and in sequence number 410 must match.

 

 

 

 

Modem data

MODEMRATE

318

Full- or Half-Speed Transmission

rate select

 

 

The values specified for the MODEMRATE parameter on the

 

 

 

 

 

 

CRTLINSDLC and CRTLINX25 commands must match sequence

 

 

 

number 318 as follows:

 

 

 

v If MODEMRATE(*FULL), 318 = 0

 

 

 

v If MODEMRATE(*HALF), 318 = 1

NRZI data

NRZI

313

NRZ or NRZI Encoding

encoding

 

 

For SDLC lines only, the values specified must match as follows:

 

 

 

 

 

 

v If NRZI(*NO), 313 = 0

 

 

 

v If NRZI(*YES), 313 = 1

Short-hold

SHM

362

X.21 Switched Options

mode

 

 

If SHM(*YES) is specified on the CRTCTLRWS command, digit 7

 

 

 

 

 

 

or 8 of question 362 must be set to 1. (For example, xxxxxx10

 

 

 

indicates that the DCE is supported for direct calls.)

 

 

 

 

Station address

STNADR

302

Control Unit Address

 

 

 

Value specified for item 302 must match that specified on the

 

 

 

CRTCTLRWS command.

 

 

 

 

Example: Connecting an AS/400 to a 3174 control unit

Configuration parameters must be coordinated when you connect an AS/400 system to a 3174 controller.

Chapter 7. Communicating with remote workstation controllers 61

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IBM manual Example Connecting an AS/400 to a 3174 control unit, 3274 AS/400, Prompt Parameter Number

AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.