To help ensure a successful GUS-MQM implementation, we will be conducting a GUS-MQM BETA testing seminar on Monday, November 5, 2001, in Committee Rooms H, I and J.

All firms interested in using the GUS-MQM function will be required to complete a BETA test certification process. Otherwise, you will not gain access to the MQM definition screen on the GUS main menu.

To facilitate the testing during the week of November 12^th through the 16^th of 2001, we have created a real time GUS test environment. This test environment setup has been requested by member firms for quite some time, and we encourage all to participate.

A real-time GUS-MQM BETA test will provide firms the opportunity to enter trades, change data, and transmit and receive GUS-MQM TREX messages via MQM. Three test options are available as follows:

• Option1: Test the ability to transmit, receive and process TREX messages for GUS transactions, which will be used in place of the on-line system.

• Option 2: Test the ability to receive TREX messages, instead of the RJE files, for all GUS transactions entered on-line.

• Option 3: Test the functionality of GUS on-line only. New programs have been written that will be moved into production upon completion of a successful BETA test. Please note, however, that there won�t be any new on-line screen functionality. We are simply offering member firm personnel the option of testing on-line GUS, to provide an added level of comfort before we go live in November 2001.

Those firms that choose either Option 1 or 2 during the one week BETA test will be moved into production for receiving GUS-MQM TREX messages when we go live in November. (Firms that choose Option 3 or that do not test during the BETA Test period will continue to receive the RJE files, as usual.) Prior to the test, firms must ensure that their test MQM queues that will access our CICS17 environment have been set up. Additionally, all User Ids that will access on-line GUS, (GUS-T on your Super Session menu) must be submitted to Client Management in advance of the test.

If you have any questions Farris Oweimrin of the Client Management Department at (312) 648-4780 or email at foweimri@cme.com.

Thank you!