Update and Reminder: CME Market Data Platform Testing Windows for existing MDAPI Customers - Saturday, August 19, and Saturday, August 26, 2006

Market Data Advisory Notices

To	Market Data Distributors
From	Market Data Operations
Subject	Update and Reminder: CME Market Data Platform Testing Windows for existing MDAPI Customers - Saturday, August 19, and Saturday, August 26, 2006
Notice Date	2006-08-18
Notice Number	Q2006-139
Effective Date	2006-08-18
Please note changes in testing time below, in red. For your information, MDP connectivity testing will be offered to all existing Market Data API customers during the morning hours (9:00 a.m.–10:30 a.m. CT) of Saturday, August 19 and Saturday, August 26, 2006, to assist them in their migration to the MDP. During the test, CME will replay MDP production messages. We ask that all Market Data Distributors be aware of this testing and take measures to ensure that the replayed data is not captured for later dissemination or intermingled with production data. If you have any questions regarding this notice, please contact: Marilee Radecki 312.930.8193 mradecki@cme.com Kevin Brady 312.648.3653 kbrady@cme.com Thank you.