HP 8921A Programmer's Manual page 453

Reading A Call Processing Subsystem HP-IB Error Messages
Figure 33 CALL CONTROL Screen with Decoding Error Message Display
Call Processing Status Register Group
If an error occurs while in the Call Processing Subsystem, an appropriate error
message will be placed in the Error Message Queue. The control program can
read the Error Message Queue to retrieve the error message.
Queue Group," in chapter 5, on page 268
Message Queue.
If an error occurred while attempting to decode data messages received from the
mobile station on the reverse control channel or reverse voice channel, the raw
data message bits are displayed in hexadecimal format in the upper right hand
portion of the
CALL CONTROL
shows the layout of the
Figure 33 on page 453
decoding error has occurred. The raw data bits can be read by the control program.
Refer to the
Display field description, on page 465
read data in the upper right hand portion of the
See "Call Processing Status Register Group," in chapter 5, on page 274
detailed description of the Call Processing Subsystem Status Register Group.
See "Status Reporting Structure Overview," in chapter 5, on page 244
information on status register groups and status reporting.
Chapter 8, Programming The Call Processing Subsystem
Using the Call Processing Subsystem's Remote User Interface
for detailed information on the Error
screen.
CALL CONTROL
CALL CONTROL
See "Error Message
screen when a
, for information on how to
screen.
for a
for detailed
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