Page 949 - 5G Basics - Core Network Aspects

Transport aspects 2

Table 12-38 – O-MSG 1 message

Field Field name Format
1 Message descriptor Message code
2 NTR One byte
3 TPS-TC capabilities See Table 12-39
4 PMS-TC capabilities See Table 12-41

5 Downstream rate adaptation downshift SNR margin (RA-DSNRMds) Two bytes
6 Downstream rate adaptation downshift time interval (RA-DTIMEds) Two bytes
7 Downstream rate adaptation upshift SNR margin (RA-USNRMds) Two bytes
8 Downstream rate adaptation upshift time interval (RA-UTIMEds) Two bytes
9 Downstream FRA time window (FRA-TIMEds) One byte
10 Downstream FRA minimum percentage of degraded tones (FRA-NTONESds) One byte
11 Downstream FRA minimum number of rtx-uc anomalies (FRA-RTX-UCds) Two bytes
12 Downstream FRA vendor discretionary criteria (FRA-VENDISCds) One byte
13 Channel-initialization policy (CIpolicy) One byte
14 Fast retrain policy (FRpolicy) One byte

15 Downstream los defect persistency (LOS-PERSISTENCYds) One byte
16 Downstream lom defect persistency (LOM-PERSISTENCYds) One byte
17 Downstream lor defect persistency (LOR-PERSISTENCYds) One byte
18 Downstream reinit time threshold (REINIT-TIME-THRESHOLDds) One byte
19 Downstream low ETR threshold (LOW-ETR-THRESHOLDds) One byte
20 Downstream target SNR margin for RMC (TARSNRM-RMCds) Two bytes
21 Downstream minimum SNR margin for RMC (MINSNRM-RMCds) Two bytes

22 Downstream maximum bit loading for RMC (MAXBL-RMCds) One byte
23 L2 link state control parameter field See Table 12-41.1
24 PMD capabilities See Table 12-41.2
25 CD_time_out_1 during fast retrain One byte
26 CD_time_out_2 during fast retrain One byte
27 Supported Options Two bytes
28 Annex X descriptor Variable

Field 1 "Message descriptor" is a unique one-byte code (0716) that identifies the message. See Table 12-7
for a complete list of codes.

Field 2 "NTR" shall be set to 0116 if the FTU-O is transporting the NTR signal in the downstream direction,
otherwise it shall be set to 0016.
Field 3 "TPS-TC capabilities" indicates the TPS-TC capabilities of the FTU-O as shown in Table 12-39.

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