Migrating X.25 over ACC to X.25 over PSI

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Note: For X.25/ACC, the X.25 protocol is executed on the ACC adapter rather than in the host.
X.25/PSI
The X.25/PSI software enables X.25 communication over X.25 PSI network adapter. The protocol
implementation in X.25/PSI compares with ACC as follows:
- The ACC Hardware (Layer 1) in X.25/ACC is replaced by the serial WAN interface having PSI
adapter in X.25/PSI.
- The ACC ZCOM I/F driver (Layer 2) in X.25/ACC is replaced by LAP-B layer in X.25/PSI.
- The NLI2ZCOM (Layer 3) in X.25/ACC is replaced by the PLP layer in X.25/PSI.