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X25AM Programming Manual

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ITI Applications
X25AM Programming Manual—527201-001
2-8
The PACKET ASSEMBLER/ DISASSEMBLER
(PAD)
In most circumstances, your application and the terminal user need not be concerned
with PAD communication and PAD control. This is handled by ITI. Special requirements
necessitate the specification of PAD parameters.
The following table lists the recommendations and special requirements for a PAD.
Figure 2-4 on page 2-9 illustrates PAD operation.
Figure 2-3. Two Kinds of PADs
Recommendation
Number Description of Procedures
X.29 Exchange of information between a PAD and ITI
X.3 Parameters that control PAD operation
X.28 Interface between the PAD and the terminal
VST0203.vsd
X.25
Packet-Switched
Network
PAD
Remote Terminal
PAD
Remote Terminal