Case 1 It is suitable for simple office setup. Connectviet offers DID numbers, users can have virtual extensions, so users can call between the extensions for free of cost. Connectviet provides fax numbers as well. Connectviet offers soft-phone clients for android, I-Phone and Windows system.
Businesses often start with a few members and then expand in course of time. But even if there are just two staff, you need to communicate, and this solution is just for you.
You can get dedicated DID numbers. Now through the virtual extensions you can communicate for FREE between the extensions.