Here is quora topic that is along the similar lines and one of the solutions mentioned could work for you. https://www.quora.com/What-is-the-best-virtual-hoste

Here is quora topic that is along the similar lines and one of the solutions mentioned could work for you. https://www.quora.com/What-is-the-best-virtual-hosted-PBX-platform-to-use-for-a-small-phone-sales-customer-service-team https://www.quora.com/What-is-the-best-virtual-hosted-PBX-pl...