Develop

**Some new features added and might be useful.**

1. Trunks list  - it is an alternative of "failover trunks". There is a possibility to attach any existing trunks to ratecard and define a calling algorithm. Look into a ratecard.

2. Minutes limitation for trunks - this feature allows you to set a day limit for trunks in minutes. Look into a trunk.

3. Dial attempts - in case of using this feature A2Billing can make several attempts per each trunk if specific dialstatus returned. Conditions are configurable too. Look into a trunk.