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[802.3_DIALOG] OIF CEI-28G VSR Response Ad Hoc

Meeting notes, May 18th Teleconference

Prepared by John D’Ambrosia



John D’Ambrosia, Force10 (Chair)

Adam Healey, LSI

Nathan Tracy, Tyco

John Patron, Avago

George Noh

Chris DiMinico, MC Communications

Robert Coenen, Reflex Photonics

Mike Dudek, QLogic

Jeff Maki, Juniper

Piers Dawe, IPtronics

Marco Mazzini, Cisco

Petar Pepeljugoski

Vittal Balasubramanian, FCI

Andreas Lenkisch, Pentair

Steve Trowbridge, Alcatel Lucent

Rick Rabinovich, Alcatel Lucent

Paul Kolesar, Commscope

Andre Szczepanek, Inphi

Iain Robertson, TI

Galen Fromm, Molex

Dan Rausch, Avago

Pirooz Tooyserkani, Cisco

Farzin Firoozmand

Beth Donnay, Force10

Greg McSorley, Amphenol

Joel Goergen, Cisco


Patent Policy link shown.  Call for patents done – no one stepped forward.


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John D’Ambrosia showed dambrosia_01_0510 as introduction to call.

Nathan Tracy gave tracy_01_0510. 

                Discussion –

·         Assumptions made for channel simulations are acceptable for connector evaluations.

·         Question was asked if backwards compatibility for QSFP is achievable. 

·         References back to distances presented in nichol_01_0708 ( see

·         Group agreed that 4” on the host is the minimum host distance that should be considered.

·         Discussion regarding a common pluggable interface for copper / optics

o   Desirable, but

§  Costs – port density? Power related to equalization?

§  Architecture – timed vs retimed

o   Discussion regarding 3m for cu reach

·         Discussion regarding timed vs retimed interfaces

o   Per Mike Dudek for @16G FC

§  Fully retimed for 850nm optics

§  Partially retimed for 1310nm optics

o   Use of retimers – cost in terms of power?



Next meeting will be June 29, 11:00am to 1pm Eastern.  (Invitation to be sent out).

Tenatively, the ad hoc will meet Tues, July 13 (IEEE Plenary week) from 7 pm to 9pm Pacific.