System and method for connecting a communication to a client

A method comprising:

• a policy engine receiving a connection request from a client device, the connection request including a client identifier;
• the policy engine sending the received client identifier to an authentication server;
• the policy engine receiving an authentication token for the client identifier from the authentication server;
• the policy engine authenticating the client device by verifying the authentication token;
• responsive to verification of the authentication token by the policy engine, a system bridge establishing a persistent client subscription connection with the client device via a pub-sub system, the persistent client subscription connection being a connection of the pub-sub system;
• the system bridge receiving an incoming communication;
• the system bridge encrypting a communication token with a key unique to the system bridge and pushing the encrypted communication token to the client device via the persistent client subscription connection of the pub-sub system;
• the system bridge receiving the encrypted communication token and a client communication from the client device;
• and
• the system bridge merging the received incoming communication with the client communication received from the client device by using the encrypted communication token received from the client device.