A2Billing installed on a server.
IP Address configured well.
Server able to access using SSH.
1) File upload Limit extend to 1000KB => 6000KB
2) Configure the server to call using SIP Phone.
3) Add 2 trunk with with 2 ratecards.
4) Failover option (Low rate is default. default rate gone wrong 2nd rate want to work).
5) Add 1 ratecard seperately as buy price.
6) Add 1 DID Lines