Case 1 It is suitable for simple office setup. Call-A-Cloud offers DID numbers, users can have virtual extensions, so users can call between the extensions for free of cost. Call-A-Cloud provides fax numbers as well. Call-A-Cloud offers soft-phone clients for android, I-Phone and Windows system.
Case 2 : Unlike case 1 it is suitable if you have offices in two different locations. With calacloudl one can have as many number of virtual extensions as they want since it works in a hosted environment, all the extensions are interlinked. It allows users to call between the extensions even if they are at different locations.
Case 3: For those users who like to work from home, they can configure the Call-A-Cloud account on their smartphones, IP phones or on their desktops and can work from home. Call-A-Cloud also has a FAX facility for home use. With the Call-A-Cloud it is easy for users to continue their daily duties from anywhere around this world.