VPN-Secured Cloud SIP PBX

I want a single, well-integrated solution that lets my team talk over a private, encrypted network and handle calls through a cloud-based SIP PBX. The VPN will serve purely as a private communication network, not just remote access, so every endpoint—office phones, softphones, and any future branch sites—must pass voice traffic through it.

On the PBX side I only need reliable call routing and forwarding at this stage; features such as voicemail, recording, or conferencing can remain optional add-ons if the platform you choose already supports them. Feel free to propose Asterisk, FreePBX, 3CX, FusionPBX, or another cloud offering—as long as it can live behind the VPN, handle SIP trunks cleanly, and scale without headaches.

Deliverables (kept short and specific):
• Deploy and configure the VPN with strong encryption, user authentication, and clear subnet planning.
• Spin up the cloud SIP PBX, connect it to the VPN, and set up call routing/forwarding rules.
• Run end-to-end voice quality tests and provide concise documentation for future administration.

If you have questions about preferred cloud providers, certificate management, or QoS settings, let’s sort them out early so the rollout is smooth and fast.