Introduction to Tandem X.25 Capabilities

X25AM Parameters
B–4 065307 Tandem Computers Incorporated
Table B-3 lists the X25AM parameters for switched and permanent virtual circuits and
logical channel assignments.
Table B-3. X25AM SVCs, PVCs, and LCNs
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Parameter
Possible
Values
Default
Values
SCF
Attribute
SYSGEN
Modifier Comments
Virtual Circuit SVC
PVC
SVC PVC CIRCUITS The maximum number of circuits
must be specified thru SYSGEN,
using the CIRCUITS modifier.
Circuits are SVC by default. A
subdevice can be specified as a
PVC using SCF.
Type of SVC Two-Way
Incoming
Outgoing
Two-Way CALLS TWOWAYCALLS
NOCALLS
INCOMINGCALLS
NOINCOMINGCALLS
OUTGOING CALLS
NOOUTGOING CALLS
This parameter applies to all
SVCs configured for the line. It
can be specified as a modifier in
SYSGEN or as a line attribute in
SCF.
PVCRANGE 1–4095 None PVCRANGE — Specifies the range of logical
channels to be used for PVCs.
For TRANSPAC (NETID), the
range is 0–4095.
Configured as a line attribute in
SCF.
SVCRANGE 1–4095 Depends on
value of
CIRCUITS.
SVCRANGE Specifies the range of logical
channels to be used for SVCs. If
no PVCs are specified, the
SVCRANGE begins with 1 and
its maximum limit depends on
the value of CIRCUITS.. If some
subdevices are defined as PVCs,
the minimum value of
SVCRANGE must be higher than
the maximum value specified for
PVCRANGE.