PDU Transmissions from the PC
Browser
IP
Software
CSLIP/PPP
Or Other
Subnet
Software
User PC
APDU
APDU
CH
Computer (Transport) Layer
(CPDU) TCP PDU
Application Layer
CPDU
IH
Internet Layer
TCP
Software
Internet PDU (IPDU)
SnT
IPDU
SnH
Subnet PDU (SnPDU)
CSLIP or PPP
Subnet Layer
Application PDU
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