TS Supplement (Includes RFC-1006 Support)

Changes in the Transport Layer When Using RFC-1006

Introduction to RFC-1006

1–20 107751 Tandem Computers Incorporated

OSI Network Service Primitives

The OSI Network Layer provides the following OSI network service primitives, as

defined in ISO 8073, to the network service user, with the exception of N-ATTACH,

which is a Tandem-specific primitive. Table 1-4 describes the network Service

primitive.

Table 1-4. OSI Network Service Primitives

Connection Establishment

Primitive Function

N-CONNECT.REQUEST A calling network service user indicates that it wants to

establish a connection.

N-ATTACH * A called network service user indicates that it is waiting for

an incoming connection.

N-CONNECT.INDICATION A called network service user is notified that connection

establishment is in progress.

N-CONNECT.RESPONSE A called network service user indicates that it will honor

the request.

N-CONNECT.CONFIRMATION A calling network service user is notified that the

connection has been established.

Data Transfer

Primitive Function

N-DATA.REQUEST A sending network service user sends data.

N-DATA.INDICATION A receiving network service user is notified that data can

be read from the connection.

Connection Release

Primitive Function

N-DISCONNECT.REQUEST A network service user indicates that the connection is to

be closed.

N-DISCONNECT.INDICATION A network service user is notified that the connection is

closed.

Connection Reset

Primitive Function

N-RESET.INDICATION ** A network service user is notified that the connection is

reset.

* This network service primitive is Tandem-specific, not defined in ISO 8073.

* * An ECONNRESET error code is returned on a socket RECV_NW or SEND_NW call when a TCP

connection has been reset.