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CME Electronic Trading Customer Forums 
CME is proud to host the CME Electronic Trading Customer Forums.

The CME Electronic Trading Customer Forums are a communication vehicle to update customers and solicit feedback on topics related to CME's electronic trading strategy over the next 6 - 12 months, including new policies, enhancements, and products. Representatives from FCMs, IBs, proprietary trading groups, ISVs and market data distributors are encouraged to attend.

These meetings will be followed by receptions.

To attend a CME Electronic Trading Customer Forum, please register online.

The agenda includes:

• CME Product Update
• Electronic Options Update
• CME Globex Trader and CME EOS Trader Update
• User-Defined Spreads (UDS) Phase 2
• NYMEX Products on the CME Globex Platform
• CME Market Data Format
• New Offering: CME LNet
• New CME Certification Environments

Chicago Tuesday, October 24 3:30 p.m. Registration 4:00 p.m. Presentation CME Auditorium 20 S Wacker Dr Chicago, IL

London Wednesday, November 8 15:30 Registration 16:00 Presentation The London Underwriting Centre 3 Minster Court, Mincing Lane London

These events are free and attendance is limited to CME customers.

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CME LNet Update 
CME LNet is a customer-managed solution via a CME-specified colocation facility, where customers are required to house a CME-certified trading application in one of two specified colocation facilities. CME LNet may not be utilized as a network-only connectivity option. CME LNet is currently in the testing phase, and will be available in production by the end of the year.

CME LNet offers reduced network latency because the colocation facilities are directly connected to the CME fiber optic transport, i.e. the CME Globex network. Also, for non-local customers, CME LNet provides a lower-latency connectivity solution.

CME is now accepting CME LNet connection orders from qualified customers. CME can only accept applications from customers who meet the following requirements:

• Have a presence at one of the CME-approved colocated facilities.
• Maintain a CME-authorized redundant site.

CME LNet is currently in testing. Customers may request a CME LNet connection via an executed Schedule 2, Access Request Form. When CME LNet goes into production, the Access Requests will be processed and connections established in the order the Access Request forms were received.

Please refer to the CME LNet Connectivity Guide and the CME LNet FAQ for more information.

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Reminder: NYMEX REBCO Futures Launch on the CME Globex Platform 
Effective this Sunday, October 22, 2006 (for trade date Monday, October 23), the NYMEX Russian Export Blend Crude Oil (REBCO) futures and calendar spreads will launch on the CME Globex platform.

To support listing a wide array of REBCO spreads in the future, the Instrument Group Code for all REBCO products is CL. The Product Code is RE.

The REBCO contract features physical delivery of REBCO on a free-on-board basis at the port of Primorsk, Russia on the Baltic Sea. The contract size is 1,000 barrels, denominated in U.S. dollars and cents per barrel. REBCO futures will be listed on the CME Globex platform for 72 consecutive months beginning with the January 2007 contract. More information on this new product is available online.

These futures and calendar spreads are currently available in the CME certification environment for customer testing.

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Reminder: CME Market Data Platform Enhancements 
Administrative Message Routing
To streamline market data processing, effective this Sunday, October 22, 2006, in the CME production environment, the following market data messages, currently disseminated via the administration channel, will be disseminated via the relevant CME Market Data Platform product channels:

• Instrument Creation (MO) messages
• Trading Day Timetables (MH) messages
• Group State Change Marker (MJ) messages
• Start of CME Globex Platform (MK) messages
• Start of Instrument Referential Broadcasting (ML) messages
• End of Instrument Referential Broadcasting (MM) messages

These administrative messages will be broadcast via both the relevant product channels and the administration channel for two months to ensure adequate customer testing time. These messages will then only be disseminated via the relevant product channel. The SPI mail messages will be the only market data messages broadcast on the administration channel.

There is no change to the Instrument Creation (MO) Messages - Replay Only and Instrument Creation (MO) Messages - Replay Only (Excluding CME Eurodollar Options) channels (1 and 16).

These changes, with these messages broadcast on both the administration and product channels, are currently available in the CME certification environment.

More information on the CME Market Data Platform is available in the CME Market Data Platform Developer's Guide. Details on the CME market data messages can be found in the CME Market Data Platform RLC Message Specifications.

Market Data Message Batching
Also effective this Sunday, October 22, to improve the efficiency of market data dissemination, the CME Market Data Platform is enabling the market data message batching functionality. Multiple market data messages will be batched into a single network frame. Although this functionality has been available since the launch of the CME Market Data Platform, as outlined in the CME Market Data Platform Developer's Guide, Section 3.1.2 Message Batching, CME is leveraging it now in response to the market data messaging increases.

To facilitate customer testing, the batching functionality is currently enabled for all channels in the CME certification environment and on the CME Globex Equity Options channel (8) only in the CME production environment. Continuous batching of simulated market data messages for CME Class III Milk futures (product code = DC) on the CME Globex Commodities, Industrial Commodities and TRAKRS^SM Options channel (14) is now available in the CME certification environment.

Please contact your CME Globex Account Manager with any questions or concerns.

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CME Certification Environment Schedule Change 
To support the upcoming UDS: Covereds Expansion release, next week the CME certification environment will be unavailable:

• 12:00 p.m. - 5:00 p.m. Central time (CT), Tuesday, October 24 (normal maintenance window)
• 3:30 p.m. - 4:00 p.m. CT, next Thursday, October 26.
• 12:00 p.m. - 12:30 CT, next Friday, October 27.

The following week, the CME certification environment maintenance window will return to the normal schedule.

If you have any questions or concerns about this schedule change, please contact CSET at 312.930.2322.

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Reminder: CME Weather Products Launch 
Effective Sunday, November 5 (for trade date Monday, November 6), the following new CME Weather futures and seasonal strips^† will launch for trading on the CME Globex platform.

Please note: The product codes for these new CME Weather products were previously assigned to CME Weather Seasonal futures. If your front-end system requires it, customers must purge their instrument databases for both the CME certification and production environments and re-populate using the new Instrument Creation (MO (m-oh)) market data messages. Please contact your front-end system provider for more information.

CME Seasonal Strip Snowfall Futures
	Product Code	October Strip	November Strip	December Strip	January Strip	February Strip	March Strip
Boston Logan International Airport	SB	SBV	SBX	SBZ	SBF	SBG	SBH
New York City Central Park	SX	SXV	SXX	SXZ	SXF	SXG	SXH

CME Canadian Weather Monthly Futures
	Heating Degree Days (HDD)	Cooling Degree Days (CDD)
Calgary	A2	P2
Edmonton	A4	P4
Montreal	A5	P5
Toronto	A7	P7
Vancouver	A8	P8
Winnipeg	A9	P9

CME Canadian Weather Heating Degree Day (HDD) Seasonal Strips
	Product Code	October Strip	November Strip	December Strip	January Strip	February Strip	March Strip
Calgary	A2	A2V	A2X	A2Z	A2F	A2G	A2H
Edmonton	A4	A4V	A4X	A4Z	A4F	A4G	A4H
Montreal	A5	A5V	A5X	A5Z	A5F	A5G	A5H
Toronto	A7	A7V	A7X	A7Z	A7F	A7G	A7H
Vancouver	A8	A8V	A8X	A8Z	A8F	A8G	A8H
Winnipeg	A9	A9V	A9X	A9Z	A9F	A9G	A9H

CME Canadian Weather Cooling Degree Day (CDD) Seasonal Strips
	Product Code	April Strip	May Strip	June Strip	July Strip	August Strip	September Strip
Calgary	P2	P2J	P2K	P2M	P2N	P2Q	P2U
Edmonton	P4	P4J	P4K	P4M	P4N	P4Q	P4U
Montreal	P5	P5J	P5K	P5M	P5N	P5Q	P5U
Toronto	P7	P7J	P7K	P7M	P7N	P7Q	P7U
Vancouver	P8	P8J	P8K	P8M	P8N	P8Q	P8U
Winnipeg	P9	P9J	P9K	P9M	P9N	P9Q	P9U

^† Options on these new CME Weather futures will be available for trading on the CME trading floor only.

These new futures and strips will be available for customer testing in the CME certification environment this Sunday, October 22.

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Reminder: UDS: Covereds Expansion - CME Equity, FX and Commodity Options 
To support the impressive growth in electronically traded options, CME is expanding User-Defined Spreads (UDS): Covereds functionality on the CME Globex platform to CME Equity, Foreign Exchange (FX) and Commodity options. With UDS: Covereds functionality, CME customers can create unique instruments composed of an option outright or spread covered with one or two futures.

The enhancements will be phased in by product group:

November 5, 2006	CME FX options
November 19, 2006	CME Equity options
December 4, 2006	CME Commodity options (listed electronically for the first time)

The new functionality is currently available for customer testing on the CME Equity, FX and Commodity options in the CME certification environment.

More information on the UDS Expansion launch is available online in the UDS Expansion Client Impact Assessment.

With this launch, options markets will no longer be available via the CME Globex Trader trading application. More information on the removal of options markets and the CME Globex Trader decommission is available online.

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