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That does make sense, John. I spent some time looking through the newer PMDs and came to a similar conclusion. I assume you will be submitting a comment against upcoming D1.5 to have these respective values removed? Regards Marek From: John Johnson <000007ff7d378f43-dmarc-request@xxxxxxxxxxxxxxxxx> All, Regarding the decision timing offset for TDP TBD's in Tables 141-13,14,17 and 18 in D1.4, it's my opinion that they can be deleted. Clause 75 (10G-EPON) has this parameter in the TX tables, but more recent PMDs (100GBASE-LR4/ER4, 25GBASE-LR/ER) do not. They rely on the default value of +/- 0.05 UI that's included in the text of 52.9.10.4 which all of these clauses ultimately point to for TDP measurement. I don't think that the difference in between OLT TX (+/-0.05 UI) and ONU TX (+/-0.0625 UI) in 10G-EPON is significant enough to justify calling them out explicitly. In industry practice, I'm not aware of anyone who actually uses this timing offset for measurement of TDP in any case. Regards, John To unsubscribe from the STDS-802-3-NGEPON list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-NGEPON&A=1 To unsubscribe from the STDS-802-3-NGEPON list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-NGEPON&A=1 |