It is very common companies will need their employees to communicate with customers, it doesn't matter where those beloved ones are based. Some customers may be local (in the same city), others in the same country and others from abroad. As a consequence, companies are ripped off from "corporate accounts" from local cellphone companies.
LCR and Billing applications for FusionPBX are what is commonly known as 'in-app'; these applications allow you to extend the functionality of a standard installation in an easy and fast way. Among the most outstanding advantages are: