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.
Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port.