RE: A note for clause 51 and 52
Erik,
While it is on the edge, I would consider such a note more than editorial in
nature. Such a change should not be made without the approval/vote of the
committee. Please bring a proposal.
jonathan
> -----Original Message-----
> From: Erik van Oosten [mailto:evoosten@xxxxxxxxxx]
> Sent: Tuesday, October 31, 2000 6:43 AM
> To: Serial PMD Ad Hoc Reflector; justin@xxxxxxxxxxxxx;
> jonathan@xxxxxxxxxxxxxxxxxxxx
> Subject: A note for clause 51 and 52
>
>
> Hi,
>
> I would like to see a note in the standard regarding the clock
> accuracy.
>
> The note is:
> "Note: Compliance with ITU-T draft recommendation for approval
> in February 2001, G.709 is accomplished with WAN operation and
> 20 ppm clock accuracy. This standard does not require 20 ppm."
>
> Or after February:
> "Note: Compliance with ITU-T recommendation G.709 v1 is
> accomplished with WAN operation and 20 ppm clock accuracy.
> This standard does not require 20 ppm."
>
>
> The note should be placed, perhaps as footnote, at these
> locations:
> - page 202, line 47, section 51.3.1 "Required signals"
> - page 208, line 9, section 51.5.2.3 "XSBI PMA_TX_CLK
> and PMA_TXCLK_SRC specification"
> - page 227, line 38, table 52-8, section 42.41.1 "Transmitter
> optical specifications"
>
>
> Rationale: It should be possible to transport a 10 GbE signal
> in an optical backbone, over long distances, using the Optical
> Transport Network (OTN). G.709 has no mapping for 100 ppm
> signals.
>
> Regards,
> Erik.
>
>
> --
> * Erik van Oosten
> * Lucent Technologies, ONG, A-ONe, Network Architecture & CPSE
> * mailto:evoosten@xxxxxxxxxx * callto:+31 35 687 5227
>