1. Verizon Confidential Information 1 TAXI (Trouble Admininstration xML Interface) “Making the Positive Move”

2. Verizon Confidential Information 2 History and Overview Piloted by Verizon in late 2005/early 2006. Currently supported for both Local and Access Customers. TAXI currently being utilized by 13 customers. Developed as an industry standard, using the EBTA CMIP standards already in place. Platform is based on using the World Wide Web versus dedicate circuit, thus making the cost less to support. Benefits of TAXI No “swivel chair” syndrome. Perform all trouble ticket maintenance into one’s own company application. Directly linked to Verizon’s back-end systems through the TAXI process. No training on Verizon’s application. With TAXI directly linking a company’s application to Verizon’s backend, no need to train on the Verizon’s application (VTAG or LSI-TA). All work performed on customer’s own application. Enhancement requests for items outside industry standards will be managed by the customer’s own company. TAXI performs real-time processing, including dynamic response statusing. TAXI is based on industry standards. TAXI

3. Verizon Confidential Information 3 Current TAXI Functionality Trouble Ticket Create Trouble Ticket Modify Trouble Ticket Status (dynamic statusing is a customer option) Escalation Request (may be limited) Quick Test* Performance Monitoring* Vendor Meets* Multi-Ticket Create* Repair Verification* * These enhancements may or may not be available through Verizon’s other electronic trouble entry systems (ie. EBTA, VTAG, LSI-TA). TAXI

4. Verizon Confidential Information 4 Getting Started – High Level Steps Step 1 – Customer completes all necessary TAXI programming updates. Step 2 – Completes and submits connectivity forms. Step 3 – Digital Certificate and End Point coordination Step 4 – Connectivity Testing Step 5 – TAPP (Trouble Admin Pre-Production) Testing Step 6 – Production Turn Up * Overall timeline typically takes from 4 to 6 months, beginning to end (dependent on customer) Additional Information For more information on getting started, please consult the appropriate TAXI Application Home page located at: oLocal – http://www22.verizon.com/wholesale/systemsmeasures/local/systems/taxi/1,,taxiapplication,00.html oAccess – http://www22.verizon.com/wholesale/ldp/homepage/1,,3-TAInterface,00.html Connectivity Request Forms – must be complete in order to obtain necessary Digital Certificate. TAXI Technical Specifications – the specs that Verizon has built their application around and would expect the customer to utilize in order to interface with Verizon’s applications. TAXI Timeline – located on the respective homepages, outlines the typical “cradle to grave” events. Details customer’s and Verizon’s actions. TAXI