This is more of an Operational, than a Tech question.

We currently use a Mitel SX200 system at our North East location.

We need Redundancy and expect to open a Back Up Facility in the Mid West.

The thought is to install a new, stand alone Mitel System in the Mid West, that will also serve as Back Up to the current system in the North East.

Can two stand alone systems be intergrated to communicate like a Remote Teleworker?

I expect to then also have a second Mitel Vendor to handle On Site work at the second Mid West location.

How do diffrent vendors intergrate?

Thanks in advance for your responses.

Peneddy