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N:\mkt\MANUALS\HP8924C\APPMOD\BOOK\chapters\amcproc.fb
Chapter 9, 264 Using the Analog Call Processing Subsystem
Using Remote (HP-IB) Control
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Figure 3
CALL CONTROL Screen with Decoding Error Message Display
Call Processing Status Register Group
See
“Analog Call Processing Subsystem Status Register Group”
in the Status
Reporting chapter of the HP 8924C User’s Guide for a detailed description.
Using the Call Processing Status Register Group To Control Program Flow
The Analog Call Processing Subsystem uses annunciators to indicate its current
state. That is - if the Analog Call Processing Subsystem is in the connected state,
the
Connect
annunciator will be lit.
Bits 0 through 5 of the Condition register in the Call Processing Status Register
Group mirror the condition of the annunciators. That is - if the
Connect
annunciator is lit, bit 5 of the Condition register will be TRUE, logic 1, and all
other bits will be FALSE, logic 0.
Under most circumstances a control program will need some means of
determining the state of an interaction between itself (the control program), the
Analog Call Processing Subsystem and the mobile station.
For example - if the control program wishes to register a mobile station, it (the
control program) will have to send a command to put the Analog Call Processing
Subsystem into the
Active
state, then, once in the
Active
state, send a
registration message by putting the Analog Call Processing Subsystem into the