 steps recorded as part of the post project assessment can help to ensure any future projects do not have to re- create this step. After you gather all the information, complete a rigorous assessment of the success of the SIP trunking project from both the financial and technological standpoints. The ROI calculator in Chapter 6, "SIP Trunking Models," contains a tool to analyze this. Chapter 3: Transitioning to SIP Trunks Summary Transition to SIP trunking requires the following steps, as shown in Figure 3-2: Step 1. Determination the current status of trunking and project priority. Step 2. Complete SIP trunking RFP/start pilot. Step 3. Complete a post project assessment to determine if the pilot transition was successful. Step 4. Make any appropriate changes to the plan based on lessons learned from pilot program/RFP and post project assessment. Step 5. Expand and complete LIVE deployments. Determination of current status of trunking and project priority. Complete SIP Expand/complete trunking RFP/ LIVE deployments. start pilot. Makes any appropriate changes to plan Complete a post based on lessons project assessment learned from Pilot to determine if the program/RFP and pilot transition was post project successful. assessment. Figure 3-2 Steps Required in the Transition to SIP Trunks 44 SIP Trunking The exact steps and issues encountered when transitioning a company from TDM to SIP trunking will be as different as each company's TDM trunking environment is today. The transition will occur differently for different applications and location, and the timeline for each can vary dramatically. This chapter discussed the steps required for this transition and considerations that need to be understood when this transition occurs. Each company's transition to adoption of SIP trunks is unique; however, after the major steps to determine what needs to be transi- tioned, what type of equipment and connections currently exists, and what the end goal is, the architectural choices of which method of trunking, and a complete R