X25AM Configuration and Management Manual

Configuring an X25AM Subsystem
X25AM Configuration and Management Manual—523424-004
3-16
Numeric Range Validation
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AUTOLOAD: The microcode for the CLIP is downloaded when the CLIP sends a
status probe with an error status or when X25AM detects an error in the CLIP.
•
NOAUTOLOAD: The microcode for the CLIP is not downloaded when the CLIP
sends a status probe with an error status or when X25AM detects an error in the
CLIP.
CALLUSERDATA
CALLUSERDATA or NOCALLUSERDATA enables or disables the call user data (CUD)
field in a call request packet.
•
CALLUSERDATA: The default value is 4 bytes of zeroes (00 00 00 00).
•
NOCALLUSERDATA:
For an application using the process-to-process (PTP) protocol for a subdevice,
the default value is no bytes of user data.
For an application using the interactive terminal interface (ITI) protocol for a
subdevice, the default value is 4 bytes of zeroes (00 00 00 00).
The value can be altered with the SCF line attribute CUD.
CIRCUITS n
The CIRCUITS value determines the maximum number of subdevices (PVCs plus
SVCs) that can be added to a line. The subdevices must be added to a line through
SCF or SPI.
The number of configurable subdevices depends on the modifiers PACKETSIZE and
L3WINDOW. For higher packet sizes (more than 256 bytes), the number of subdevices
which can be configured may be less than 510.
All subdevices default to SVCs, beginning with 1. You can use SCF to alter the number
of PVC (SCF line attribute PVCRANGE) and SVC (SCF line attribute SVCRANGE)
assignments but not to change the total number of circuits.
Default: CALLUSERDATA
Units: Not applicable
Alternate Modifier: NOCALLUSERDATA
Default: 32
Units: Integers
Range: 1 through 510