Carrier grade VoIP system (Kamailio, A2Billing, Asterisk)

Dear Freelancer, We would like to build a new voip platform, with the following: Kamailio 3 (with SIREMIS, Logrotate), Asterisk servers with A2B, Mysql, web servers for the platform management. The architecture is designed to support the failover so all the configs are stored in the database. In total there is 8 servers to setup We have an old platform in other site with an old kamailio asterisks with 100 of users, we need to export sip info of all user to the new platform Only Freelancer with a strong experience with Kamailio (openser), linux admin & security, and asterisk are invited We will also need your service on long-term (monthly base) to monitor the platform and amelioration. We will send the schema of the architecture to you once you bid Our budget is 800-1000 The job should start as soon as possible and should be finish in 6 days Thank you MJ