Identify the principal and alternate transporting ambulance service(s), by name and DOH agency code #, dispatched to the incidents to which you respond. Provide a copy of the written EMS participation agreement(s) you have executed with these services.
This process starts with the sending TCP software issuing a request for a TCP connection with the receiving machine. In the message is a unique number (called a socket number) that identifies the sending machine's connection.
TCP is a reliable stream delivery service which guarantees that all bytes received will be identical with bytes sent and in the correct order. Since packet transfer by many networks is not reliable, a technique known as 'positive acknowledgement with re-transmission' is used to guarantee reliability.