VoIP System Setup

I run an Australian after-hours support service and need a seasoned VoIP engineer to design, configure and fully automate our new cloud telephony environment. What I need the system to do Our operation supports 30+ client organisations, each with its own Australian DID. After business hours every call must be routed automatically to our overseas team, so rock-solid automated call forwarding and routing is the number-one priority. The platform also has to cover call recording, voicemail, SMS escalation through ClickSend, real-time activity reporting and the flexibility to scale as we add new clients. Tech landscape I am open to any robust solution—3CX, Twilio, a SIP-based cloud PBX or a hybrid you recommend—provided it delivers reliability, security and straightforward remote management. Your proposal Please show relevant past work that demonstrates you have built similar multi-tenant, after-hours call-centre environments. In the same submission outline: • your recommended architecture and why you chose it • an estimate of setup costs versus ongoing per-month costs (licensing, trunks, SMS, etc.) • a clear implementation timeline with key milestones • details of the post-launch support package you can offer on a fixed-price basis Acceptance The engagement is complete once the system is live, tested end-to-end, and my team can seamlessly handle, record and track calls while automated SMS alerts fire through ClickSend without fail. If this sounds like a build you can deliver, I look forward to reviewing your approach and past projects.