ACC X.25 Protocol User's Guide

ZX25D X.25 Protocol Driver
Virtual Circuit Definitions
Chapter 3 55
Seven possible valid combinations of these option bits are covered by the
predefined device types defined in /opt/acc/cfg/zcomdevice.txt.
One of these predefined types is typically used in the device parameter of
the virtual circuit terminal definition statement.
Additional customization of the option words may be achieved either by
modifying zcomdevice.txt and using the ‘ZDGEN’ program to create a
new device type, or by using the “option” parameter.
‘ZDGEN’ and ‘TTGEN’ are documented in the ACC Utilities Reference
Guide.
Predefined
Name
VC
Typ
e
Description
Optio
n
Word
X25.SVC SVC outgoing calls 0x800
X25.SVC.IN SVC incoming calls, null call address 0x050
X25.SVC.AUTO SVC outgoing calls on enable 0x820
X25.SVC.OUT SVC outgoing calls 0x800
X25.SVC.IO SVC in/out going calls, null call
address
0x850
X25.SVC.NULL SVC in/out going calls, null call
address
0x850
X25.SVC.IO.D SVC in/out going, deactivate after
message
0x868
X25.PVC PVC 0x080