Differences in X.25 Support, Versus 1984 Ccitt

NS X.25 Migration: NS 3000/V to NS 3000/iX

Differences in X.25 Support

There are differences in X.25 support between NS 3000/V and

NS 3000/iX which need to be considered when you migrate as described in the following paragraphs.

1980 Versus 1984 CCITT

NS 3000/V supports CCITT 1980 and NS 3000/iX supports both 1980 and 1984.

General Level 3 Differences

In MPE V X.25, a Reset is sent to initialize or clear a Permanent Virtual Circuit. In MPE/iX X.25, a Reset is not sent to initialize or clear a Permanent Virtual Circuit.

MPE V X.25 has a timeout on an interrupt collision. MPE/iX X.25 does not.

Level 3 Access with NetIPC

In addition to the X.25 features supported on NS 3000/V, NetIPC 3000/XL provides the following CCITT 1984 features:

•Fast select facility.

•The capability of modifying and reading the facility ﬁeld in call packets.

•A new option in IPCDEST (called the destination network address option) allows you to directly specify an X.25 address or PVC number instead of a remote node name. See the NetIPC 3000/XL Programmers Reference Manual for more information. If using this feature, you can conﬁgure POOL as an X.25 Address Key with its security option set to “O” (outbound) in the X.25 SVC Address Key Paths screen to allow outbound calls to any destination address.

•IPCCONTROL request 12, reason for error or event, on NS 3000/V can return 14 (network shutdown), 15 (restart sent by local network), 16 (level 2 failure), 17 (restart sent by local protocol module), and 18 (restart packet received). IPCCONTROL on

NS 3000/XL only returns 10 (Clear), 11 (Reset), or 12 (Interrupt).

•In NS 3000/V, IPCSHUTDOWN does not complete until a clear conﬁrmation arrives. In NS 3000/XL, IPCSHUTDOWN completes immediately.

•In NS 3000/V, IPCCREATE requires that the network name be padded with nulls. In NS 3000/XL, IPCCREATE requires the network name be

204	Appendix B

E3000 MPE/IX, E3000/IX specifications

The HP E3000 series, particularly the E3000/IX and E3000 MPE/IX, represents a significant milestone in the evolution of business computing, developed by Hewlett-Packard (HP) during the late 1970s and early 1980s. These systems were designed to provide robust, reliable, and efficient operation for mid-sized businesses, leveraging the power of the MPE (Multi-Programming Executive) operating system.

One of the main features of the HP E3000 series is its multitasking capability. MPE/IX allows for multiple applications to run concurrently, maximizing the utilization of system resources. This is particularly beneficial for organizations that require simultaneous access to various business applications, ensuring enhanced productivity and efficiency.

The HP E3000/IX architecture is built on a powerful 16-bit or 32-bit microprocessor, enabling it to handle substantial workloads. The system architecture is known for its modular design, which allows for easy upgrades and customization. This flexibility is essential for businesses that need to adapt to changing demands without overhauling their entire computing infrastructure.

Another notable technology incorporated into the HP E3000 series is its support for a range of storage solutions. The E3000 systems were compatible with various disk drives, providing organizations with options for data storage that matched their performance and capacity requirements. Additionally, they featured advanced data management capabilities, such as built-in backup and recovery systems, ensuring that critical business information remained secure and accessible.

Beyond hardware capabilities, HP E3000/IX and MPE/IX systems provide extensive programming support. They included tools for developing custom applications, with support for languages such as COBOL, BASIC, and FORTRAN. This versatility made it easier for businesses to tailor their software solutions to their specific needs, enhancing operational effectiveness.

Networking capabilities were also a significant innovation of the E3000 series. The systems offered robust support for various networking protocols, allowing for seamless integration with other computing environments. This facilitated communication and collaboration within an organization, as well as with external partners and clients.

In summary, the HP E3000/IX and E3000 MPE/IX systems were pivotal in delivering reliable computing power to mid-sized enterprises. With their multitasking operating system, modular architecture, advanced data management, and programming support, these systems provided an adaptable and comprehensive solution for evolving business needs. The legacy of the E3000 series is evident in how it paved the way for modern enterprise computing, focusing on flexibility, scalability, and efficiency.

HP E3000 MPE/IX manual Differences in X.25 Support, Versus 1984 Ccitt, General Level 3 Differences

Models: E3000 MPE/IX E3000/IX