OSI/TS SCF Reference Manual

Glossary
OSI/TS SCF Reference Manual—424832-001
Glossary-7
presentation context
D-series releases) or the Port Access Method (PAM) (for G-series releases) lines, the
address used by TLAM or PAM to specify the address of the connection to a local area
network (LAN) controller. Preferred binary encoding method.
presentation context. The combination of an abstract syntax and assignment of a transfer
syntax to each on a Presentation Layer
connection. For OSI/AS, the local application
provides a list of up to 16 presentation context definitions, each consisting of a
presentation context identifier, an abstract syntax name, and up to 3 transfer syntax
names. Users of called address can provide up to 15 presentation context definitions; the
presentation context for ACSE is supplied by OSI/AS. The remote application decides
which of the named transfer syntaxes is to be used for each presentation context and
specifies that transfer syntax in the presentation context definition result list.
presentation context definition list. For Compaq OSI/AS, a list containing up to 16
presentation context definitions. Each presentation context definition contains a
presentation context identifier (PCID), an abstract syntax name, and up to 3 transfer
syntax names
presentation context definition result list. For Compaq OSI/AS, a list containing up to 16
elements, each indicating the called application’s acceptance or rejection of one of the
presentation context definitions proposed in the presentation context definition list.
presentation data value (PDV) list. The form in which the Presentation Layer
transmits
data. It consists of a sequence of encoded data values.
presentation default context name. For Compaq OSI/AS, a structure that contains the
default abstract syntax and transfer syntax
to be used if the presentation context
definition list is not present.
presentation default context result. For Compaq OSI/AS, a parameter that indicates the
called application’s acceptance or rejection of the presentation default context name
.
Presentation Layer. Layer 6 in the Open Systems Interconnection (OSI) Reference Model
.
This layer resolves the differences of varying data formats between systems of different
vendors. It transfers data in a system-independent manner, performing appropriate
conversions at each system as necessary.
presentation selector (PSEL). A logical address in the Presentation Layer
through which
presentation services are made available. A single PSEL can service one or more
connections simultaneously.
presentation service access point (PSAP). A network-unique, physical address in the
Presentation Layer
through which connections are established and maintained. Also
called presentation address.
profile. A type of object defining a template that contains configuration parameters for
OSI/AS dynamic subdevices. When a profile is specified for a connection, the
configuration parameters in the profile take precedence over any corresponding
parameters specified for the service as a whole.