HP OTS/9000

HP OSI Transport Services/9000 (OTS/9000) networking software provides the Network, Transport, Session, Presentation, ROSE, and ACSE layers of the OSI reference model. OTS/9000 also provides OSI network layer services over the X.25/9000, FDDI/9000, or LAN/9000 link. These layers supply the necessary foundation to run OSI services, such as FTAM and X.400, as well as CMIP, which is part of the HP OpenView product. OTS/9000 provides several application programmatic interfaces to allow developers to write custom applications (XTI and APRI). In addition, OTS/9000 provides RFC1006 functionality. This feature allows running OSI services such as X.400 over TCP/IP connections using any link supported by TCP/IP. OTS/9000 is the main component of HP's OSI product solutions, which include:

OTS/9000 Components

OTS/9000 resides in the kernel and is accessed through the streams facility. OTS consists of the following components:

• ACSE (Association Control Service Element)

• ROSE (Remote Operation Service Element)

• Presentation (OSI Presentation Layer)

• Session (OSI Session Layer)

• Transport (OSI Transport Layer)

• CLTS (Connectionless Transport Service)

• MSDSG (Multi-System Distributed System Gateway)

• RFC1006 (OSI Transport Class 0 over TCP Specification)

• CONS (Connection Oriented Network Service)

• CLNS (Connectionless Network Service)