Introduction to Tandem X.25 Capabilities

PAD-Related Standards
What is X.25?
1–8 065307 Tandem Computers Incorporated
X.28
X.28 defines how an asynchronous device communicates with a PAD in a public data
network in the same country (see Figure 1-5).
X.29
X.29 defines the procedures that an X.25 DTE must follow to control the operation of a
PAD during communications with an asynchronous DTE through the PAD (see
Figure 1-5).
Figure 1-5. PAD-Related Standards
X.28
X.28
X.29
X.3
005
PAD
PSDN
X.3
PAD
X.25 DTE