Update 8 Asterisk Free PBX servers

We are an internet provider and have 8 Asterisk servers running Free PBX. We want someone to do the following: 1) Update them to the current versions 2) Disable or remove any unused modules 3) Give us recommendations for improvements (Any actual improvements will be a separate project) They are running the follwing versions 1 -[login to view URL] 2 -[login to view URL] 3 -2.10.1.9 4 -[login to view URL] 5 -2.11.0.11 6 -[login to view URL] 7 -[login to view URL] 8 -[login to view URL] If possible we would like to be able to use you long term for updates and service as needed. This project is ONLY for the updates. We can discuss ongoing maintenance once the updates are complete. You must have experince and you must have a good rating from multiple projects on Frelancer. NO EXCEPTIONS!