IBM RS/6000 44P - Manual (Page 89)

v Update Operator Panel
The service processor displays Operator Panel data on the ASCII terminal if a
remote connection is active.
v Environmental Monitoring
The Service Processor provides expanded error recording and reporting.
v System Firmware Surveillance (Heartbeat Monitoring)
The service processor monitors and times the interval between system firmware
heartbeats.
v Responding to System Processor Commands
The service processor responds to any command issued by the system processor.
Run-time Phase
This phase includes the tasks that the service processor performs during steady-state
execution of the operating system.
v Environmental Monitoring
The Service Processor monitors voltages, temperatures, and fan speeds (on some
servers).
v Responding to System Processor Commands
The service processor responds to any command issued by the system processor.
v Run-Time Surveillance (Heartbeat Monitoring)
If the device driver is installed and surveillance enabled, the service processor
monitors the system heartbeat. If the heartbeat times out, the service processor
places an outgoing call. This is different from the Bring-up Phase scenario where two
reboot attempts are made before placing an outgoing call.
Service Processor Procedures in Service Mode
When the system is in service mode, the following service processor parameters are
suspended:
v Unattended Start Mode
v Reboot/Restart Policy
v Call-Out
v Surveillance
When service mode is exited, the service processor parameters revert to the customer
settings.
Chapter 3. Using the Service Processor 71