Nortel Confidential Information 1 Refugio Total Network Solution Cherylyn Boyd – Nortel Account Manager Dennis Dodd – Sr Convergence Engineer November, 2007

Nortel Confidential Information 2 IDF 1 IDF 3 IDF 4 IDF 5 IDF 6 MDF IDF 7 IDF 20 MDF IDF 30 IDF 43 IDF 41 IDF 42 IDF 40 PP1 IDF 2 4 MM Fiber 2 MM Fiber 4 MM Fiber 6 MM Fiber 6 SM Fiber 24 SMF Fiber 4 MM Fiber 6 SM Fiber + New 12 MM Fiber 4 MM Fiber New 24 MM Fiber PP2 12 SMF Fiber 6 SM Fiber MIDF-2 was eliminated and re-located to the New Elementary Was IDF-2 Was MIDF-1 Was MDF – Now is the IDF, plus a major fiber hub for this location. Was IDF-1 Was MIDF-5 Was MIDF-4 Was MIDF-3 Was MDF Was MIDF-1 Was MIDF-2 IDF xx IDF xx MDF LEGEND Blue denotes IDF with 24 ports 10/100/1000 PoE (or less) Green denotes IDF with 48 ports 10/100/1000 PoE (or more) Red denotes Primary MDF (ports as required) 4 MM Fiber 24 SMF Fiber

Nortel Confidential Information 3 Switched Firewall (Model 511) Secure Router (3120) External TPS Sensor #1 (Model 2150) TPS Defense Center (Model 2070) Secure Network Access (Model 4050) Primary MDF Switch #1 (Model 5530) Primary MDF Switch #2 (Model ) Application Switch (Model 3408) WLAN Security Switch (Model 2380) BCM 400 – Main Telephony Server IDF-1, HS Office Area (Model ) IDF-2, HS Computer Lab (Model ) IDF-3, HS Admin Area (Model ) IDF-4, HS Library (Model ) IDF-5, HS Band Hall (Model ) IDF-6, HS Science Bldg (Model ) IDF-7, HS Industrial Arts (Model ) IDF-20, HS 7 th & 8 th Grade (Model ) 911 Call Server (Model BCM50) IP Phone (Model 1120) IP Phone (Model 1140e) PRIMARY MDF (Adjacent to Technology Director) High School IDF’s Access Point (Model A-2330) VPN Gateway (Model 3050)

Nortel Confidential Information 4 Secure Router (1004) Secondary MDF Switch #1 (Model 5530) Primary MDF Switch #2 (Model ) IDF-40, ES Office Area (Model ) IDF-41, ES East Classroom (Model ) IDF-42, ES West Classroom (Model ) IDF-43, ES Gymnasium (Model ) 911 Call Server (Model BCM50) 911 Call Server (Model BCM50) SECONDARY MDF (New Stricklin Elementary Expansion) Existing Stricklin Elementary School IDF’s IDF-30, New ES Computer Lab (Model )

Nortel Confidential Information 5 Switched Firewall Secure Router Ext TPS Sensor TPS Defense Center SNAS MDF Switch #1 MDF Switch #2 Application Switch WLAN Sec Switch Main Telephony Server IDF-1 IDF-2 IDF-3 IDF-4 IDF-5 IDF-6 IDF-7 IDF Call Server IP Phone (Model 1120)IP Phone (Model 1140e) PRIMARY MDF New Elementary Access Point VPN Gateway Secure Router MDF Switch #1 MDF Switch #2 911 Call Server IDF-40 IDF-41 IDF-42 IDF Call Server Existing Elementary Existing High School New 7 th and 8th Secondary Internet T-1 Primary Internet T-1 10GB SMLT 2 x SMF Cascade Cable1GB SM or MM Fiber (Typical) 1GB Copper Connection 2 x CO 1 x Digital Trunk IDF-30