Hybrid Cloud PBX

A hybrid PBX, comprising:

• at least two PBXs, each PBX having at least one connection to an external telephone service provider, each connection selected from the group consisting of:
• a connection to a VoIP provider, and
• a connection to a PSTN;
• one or more extensions, each extension having:
• a primary connection to a PBX of the at least two PBXs, and
• a secondary connection to another PBX of the at least two PBXs;
• and
• a website operable by a user to configure the at least two PBXs as a single system,
• wherein the at least two PBXs are operative to route calls to and from the one or more extensions.

A hybrid PBX comprising:

• a mesh network having a plurality of nodes, each node consisting of a PBX;
• and
• at least one extension, each extension connecting to at least two nodes,
• wherein the nodes are configured to route calls to and from the extensions of the at least one extension.