Page 837 - 5G Basics - Core Network Aspects

Transport aspects 2

Table 11-31 – Management counter read commands sent by the requesting FTU

Name Length (bytes) Byte Content

Request 2 2 0116 (Note)
NOTE – All other values for byte 2 are reserved by ITU-T.

Table 11-32 – Management counter read responses sent by the responding FTU

Length
Name Byte Content
(bytes)
ACK Variable 2 8116 (Note)
3 to 2 + 4 × (4 + 5 + 2) Bytes for all of the anomaly counter, PM parameter
counter and retransmission test parameter values
(see Table 11-33).
NOTE – All other values for byte 2 are reserved by ITU-T.

Upon reception of the management counter read request command, the FTU shall send the response. Any
function of either the requesting or the responding FTU shall not be affected by the command.

Anomalies are only counted at time periods during the transmission of data symbols and RMC symbols.
Anomalies are not counted in the upstream direction during the downstream transmissions, in the
downstream direction during upstream transmissions and during transmission of the quiet symbols.

The management counter values shall be derived from locally generated defects and anomalies defined
within clause 11.3. The parameters shall be transferred in the order (top to bottom) defined in Table 11-33.
All counter values are defined as 32-bit counters and shall be mapped to the response in order of most
significant to least significant byte. No bytes shall be inserted into the response for the TPS-TC functions
that are currently disabled.

The counters shall be reset at power-up, and shall not be reset upon a link state transition, and shall not be
reset upon read. The time periods when the FTU is powered but not in the showtime state shall be counted
as unavailable seconds (see clause 11.4.4.5).

The field EFTR_min contains the EFTR_min as derived by the far-end receiver. Although this parameter is
reported via the management counter eoc commands, this performance monitoring parameter is not a
counter (see clause 11.4.1.1.6).

Table 11-33 – FTU management counters

Anomaly counters
Counter of the fec anomalies (see clause 11.3.1.1)
Counter of the crc anomalies (see clause 11.3.1.1)

Counter of rtx-uc anomalies (see clause 11.3.1.1)
Counter of rtx-tx anomalies (see clause 11.3.1.1)
PM parameter counters
Counter of the ESs (see clause 11.4.4.1)
Counter of the SESs (see clause 11.4.4.2)
Counter of the LOSSs (see clause 11.4.4.3)
Counter of the LORSs (see clause 11.4.4.4)
Counter of the UASs (see clause 11.4.4.5)

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