NOTICE DATE: September 11, 2009 NOTICE TYPE: M-B091109-01 Outage - NMMS SHORT DESCRIPTION: Network Model Management System (NMMS) outage on September 11, 2009 INTENDED AUDIENCE: TDSPs / TSPs DAY AFFECTED: September 11, 2009, 10:29 AM - 1:45 PM LONG DESCRIPTION: From 10:29 AM until 1:45 PM on September 11, 2009, NMMS experienced an outage of the production system. Technical support has resolved the issue and NMMS is back in service. CONTACT: If you have any questions, please forward them to [log in to unmask]<mailto:[log in to unmask]> or contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com<http://lists.ercot.com/>. dh