Page 889 - 5G Basics - Core Network Aspects

Transport aspects 2

Table 12-2 – FTU-O state machine primitives

Primitive name Direction Valid state Description
o:_power on ME  FTU-O O-SELFTEST FTU-O power on.
o:_selftest ME  FME O-IDLE Request to start selftest.
O-UNIT-FAIL

o:_selftest_result FME  ME O-SELFTEST Report of selftest result:
– pass;
– fail.
o:_idle_ignore ME  FME Any state Request to move back to O-IDLE state.
o:_L0_request ME  FME O-IDLE Request to move from O-IDLE state to O-SILENT
O-SILENT state or from O-SILENT state to O-INIT/HS state
with continuation to OINIT/TRAIN state.

o:_init result FME  ME O-INIT/HS Report on result of the ITU-T G.994.1 session:
– pass with mode selected;
– silent or no mode selected;
– fail.
o:_training_result FME  ME O-INIT/TRAIN Reports the result of initialization (channel
discovery and channel analysis and exchange
phases):
– pass;
– fail.
o:_end_showtime ME  FME O-SHOWTIME Request for transition from O-SHOWTIME state
to O-DEACTIVATING 2 state upon conditions
defined by fast-retrain policy (see clause
12.1.4).
o:_fast-retrain ME FME O-DEACTIVATING2 Request to transition to O-INIT/TRAIN state
(start of fast retrain).
o:_reinitialization ME FME O-DEACTIVATING1 Request to transition to O-SILENT state (normal
restart after power off or training failure).

o:_L3_request FME  ME O-SHOWTIME Request to transition to O-DEACTIVATING1
state through L3 request/grant eoc message
exchange.

o:_L3_reject FME  ME O-SHOWTIME Reject of the FTU-R request for transition to O-
DEACTIVATING1 state.

Table 12-3 – FTU-R state machine primitives

Primitive name Direction Valid state Description
r:_power on ME  FTU-R R-SELFTEST FTU-R power on.
auto_init ME  FME R-SELFTEST Requests to automatically start initialization (ITU-T
G.994.1 following ITU-T G.9701 initialization) when
transceiver is in the valid state.
r:_selftest ME  FME R-IDLE Request to start selftest.
R-UNIT-FAIL

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