Re: [8023-10GEPON] Fwd: [8023-10GEPON] As for the Class B+ of ITU-T
Dear Tatsuta-san,
Thank You for the information and the additional clarification - it was clear for me that You only answered the question raised during the meeting rather than expressed Your personal preference regarding the loss budget.
Best wishes
Marek Hajduczenia (141238)
SIEMENS Networks S.A. - IC COM D1 R
Rua Irmãos Siemens, 1
Ed. 1, Piso 1
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2720-093 Amadora
Portugal
* Marek.Hajduczenia@siemens.com
http://marekhaj.easyisp.pl/index.php
(+351.21.416.7472 4+351.21.424.2082
-----Original Message-----
From: T.TATSUTA [mailto:tatsuta@ANSL.NTT.CO.JP]
Sent: terça-feira, 21 de Novembro de 2006 4:24
To: STDS-802-3-10GEPON@LISTSERV.IEEE.ORG
Subject: [8023-10GEPON] Fwd: [8023-10GEPON] As for the Class B+ of ITU-T
Dear 10G-EPON members,
I would like to clarify one thing.
Yesterday, I sent the following e-mail because it was my homework.
It does not mean that class B+ is my preference.
Sincerely yours,
Tsutomu TATSUTA
>Date: Mon, 20 Nov 2006 13:58:55 +0900
>To: STDS-802-3-10GEPON@listserv.ieee.org
>From: "T.TATSUTA" <tatsuta@ansl.ntt.co.jp>
>Subject: [8023-10GEPON] As for the Class B+ of ITU-T
>
>Dear 10G-EPON members,
>
>This is Tsutomu TATSUTA from NTT.
>As I promised in Dallas meeting, I checked a reason why Class B+ of ITU-T
>was 28dB.
>
>Class B+ loss is derived from Class B loss and WDM losses.
>WDM losses are estimated at 3dB (2 WDM couplers are settled in the both
>side of ODN).
>So,
>28dB (Class B+ loss) = 25dB (Class B loss) + 3dB (WDM coupler loss).
>
>Sincerely yours,
>Tsutomu TATSUTA