Compaq OSI/APLMGR D43, OSI/FTAM D43 manual Compaq Ftam Responder Architectural Overview

Introduction to the Compaq FTAM Responder The Responder and Underlying Subsystems

Figure 1-2. Compaq FTAM Responder Architectural Overview

	User Application
Application Layer	API
	Tandem FTAM

Presentation Layer			TAPS
		(OSI/AS)
Session Layer
Transport Layer
			TSP		TSP
Network Layer			(OSI/TS)		(TCP/IP)
	NSP
Data Link Layer	(X25AM)	NSP				NSP
				NSP
		(TLAM or PAM)
				(X25AM)		(TLAM or PAM)
	Controllers	Controllers		Controllers		Controllers
Physical Layer
	RS-232C	50-ohm		RS-232C,		50-ohm
	RS-449			RS-449,
		Baseband				Baseband
	X.21, V.35			X.21, V-35
	WAN	LAN		WAN		LAN

CDT 204.CDD

PDUs from a remote FTAM initiator are received by the Compaq system at the Physical Layer and are transmitted up through the appropriate communications controller (or adapter), NSP process, TSP process, and TAPS process to the FTAM responder process.

OSI/FTAM Responder Manual—425199-001

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