Billing Software was created in order to handle billing and time tracking as well as invoicing the customer for products and services. This software can also track worked hours by employees, as well as the expenses related to projects or clients.
Viettel Group is one of leading telecom service providers in the world with over 50 million subscribers. Wireless Intelligence has ranked Viettel Group as the 19 th out of 784 biggest telecom service providers in the world regarding the number of subscrib
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