Customizing the Modem Configuration Files

You can create your own modem configuration files or modify the samples provided. After you customize your modem configuration files, you must access them through the Configure Remote Maintenance Policy Service Aid rather than from the service processor menus.

If you have already set up your serial ports, line speeds, authorizations, and telephone numbers from the service processor menus, use the service aid to specify your customized modem configuration files.

If you have not already set up your serial ports, line speeds, authorizations, and telephone numbers from the service processor menus, use the service aids to set them while you specify your customized modem configuration files.

To disable Auto-Reliable Mode testing of the remote modem, use the sample modem configuration file /usr/share/modems/modem_f.cfg as a model that you can modify, as follows:

1.Find the necessary command in your modem manual.

2.Copy the /usr/share/modems/modem_f.cfg file to a new file with a different name (for example, modem_fx.cfg).

3.In the new file (modem_fx.cfg), change the line Send "ATE0T\r" to Send "ATcccE0T\r" where ccc is the added command as specified in your modem manual, as follows.

Change the third line of each of the following stanzas:

vcondout

vcondin

vripo

4.Save the changes.

IBM 7852-400 DIP Switch Settings

If you are using a 7852-400 modem to enable service processor communications, for proper operation, the dual inline package (DIP) switches must be set according to the following table:

Switch

Position

Function

 

 

 

1

Up

Force DTR

2

Up

Flow Control &E4

3

Down

Result Codes Enabled

4

Down

Modem Emulation Disabled

5

Up

Auto Answer Enabled

6

Up

Maximum Throughput Enabled

7

Up

RTS Normal Functions

8

Down

Enable Command Mode

9

Down

Remote Digital Loopback Test Enabled

10

Up

Dial-Up Line Enabled

11

*Up

AT Responses Enabled (Extended Responses Disabled)

12

*Down

Asynchronous Operation

166Eserver pSeries 690 User's Guide

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IBM pSeries690 manual Customizing the Modem Configuration Files, IBM 7852-400 DIP Switch Settings

pSeries690 specifications

The IBM pSeries690, also known as the IBM eServer p690, is a high-performance server within IBM's line of Power Systems, designed primarily for enterprise-level workloads. Launched in the early 2000s, it distinguished itself as one of IBM's flagship offerings, aimed at delivering exceptional scalability, reliability, and processing power.

At the heart of the pSeries690 is the IBM POWER4 processor, a revolutionary architecture that significantly enhanced processing capabilities. The system supports multiple processor configurations, allowing businesses to customize performance based on their specific applications. Each pSeries690 can be configured with up to 32 POWER4 processors, providing a maximum processing power that is well-suited for demanding enterprise applications, complex databases, and large-scale transaction processing.

One of the standout features of the pSeries690 is its ability to handle massive amounts of memory — up to 1TB of total RAM. This is particularly advantageous for businesses that run memory-intensive applications or require high availability for critical tasks. The server’s advanced memory architecture contributes to faster data access and improved overall system performance.

Additionally, the IBM pSeries690 employs the innovative AIX operating system, which is tailored for high performance and reliability. AIX comes equipped with features such as dynamic logical partitioning (LPAR), allowing resources to be allocated flexibly and efficiently across different workloads. This technology supports virtualization, enabling multiple operating environments to run concurrently on a single physical server, optimizing resource utilization.

The pSeries690 also includes robust fault tolerance and reliability features. Redundant components, hot-swappable parts, and advanced error detection mechanisms ensure that the system remains operational even in the event of hardware failures. This reliability is crucial for mission-critical applications where downtime can lead to substantial financial losses.

Networking capabilities of the pSeries690 are enhanced by support for high-speed connections, including Gigabit Ethernet and the ability to integrate with various network topologies. This versatility facilitates seamless connectivity in complex IT environments.

In conclusion, the IBM pSeries690 remains a powerful and reliable choice for enterprises seeking to manage and optimize their most demanding workloads. Its combination of cutting-edge processing capabilities, expansive memory support, and robust virtualization features makes it a significant player in the realm of enterprise computing. As businesses continue to evolve, the core strengths of the pSeries690, especially in terms of scalability and reliability, ensure that it continues to meet the needs of demanding applications.