Avocent Access Router Cyclades-PR2000 - Manual (Page 60)

Cyclades-PR2000
Chapter 8 - Data-Link Protocols (Encapsulation) 60
Modem or
DSU/CSU
X.25
Switch / DCE Switch / DCE
Router / DTE
Router / DTE
FIGURE 8.2 PUBLIC X.25 NETWORK EXAMPLE
X.25
A Cyclades Router can act either as a DTE (Data-terminal Equipment) connected to a public X.25 network or as
a DTE or DCE (Data circuit-terminating Equipment) as part of a private X.25 network. The first case is discussed
in this chapter. The second case is described in the CyROS Reference Guide. Both Permanent Virtual Circuits
(PVCs) and Switched Virtual Circuits (SVCs) can be defined. A PVC requires that two DTEs be permanently
connected.
STEP ONE
First, the general X.25 protocol parameters are set in the X.25 Menu. A detailed description of the X.25 parameters
and their values for the example is provided in the table below.