1. 1 Texas Data Transport Working Group Agenda ItemLeading Discussion  Introductions  Review of Agenda  Antitrust Statement ANTITRUST GUIDELINES FOR MEMBERS OF ERCOT COMMITTEES, SUBCOMMITTEES AND WORKING GROUPS It is ERCOT’s policy and expectation that all persons participating in ERCOT activities (including all ERCOT meetings, committee meetings, conference calls, email communications and informal discussions) comply with the antitrust laws. These Antitrust Guidelines are designed to assist members of and participants in ERCOT committees and working groups in recognizing conduct that may violate the antitrust laws. ERCOT strictly prohibits market participants and their employees who are participating in ERCOT activities from using their participation in ERCOT activities as a forum for engaging in practices or communications that violate the antitrust laws. Debbie McKeever, TDTWG Chair PRR606 – Status and audit process for USAs and Digital CertificatesJack Adams, ERCOT Recent ERCOT System outagesChristian Lane, ERCOT 814 20 processing times – Current verses future (post SOA)Christian Lane, ERCOT Discuss service levels for ERCOT systems availability and processing capabilityAaron Smallwood, ERCOT SCR745 – Status Update from ERCOT Board meeting and plans for moving forwardDave Farley, ERCOT LunchAll Review TDTWG NAESB EDM v1.6 implementation guide – review whether or not the use of IP addresses is included – What is the risk if a MP hardcode an IP address in a URL? Jesse Cline, EC-Power TDTWG NAESB EDM v1.6 guide – determine sections needing improvement/updatesClay Katskee, ERCOT ERCOT SOA Update Jill Prince, TIBCO PM Discuss date, time, location for next meetingAll AdjournDebbie McKeever, TDTWG Chair

2. 2 PRR606 Update Sent out on 9-30-2005 from ERCOT Client Relations (Ted Hailu, Dale Goodman) To: Primary Contact and USA Email Included –Letter of Attestation –List of current Digital Certificate Holders Name, Email, Employee ID, MP DUNS Number, Expiration Date 399 Market Participant Companies Emailed Number of Attestations: 33 Number of those requesting extension: 3 Follow up notice to be sent: Second notice to be sent on 10-19 for those that have not responded.

3. 3 PRR606 Responses Chart NumberPercent Attestations338.27% Extensions30.75% No Responses36390.98% Companies399100.00%