Data and voice transmission port equipment and data and voice transmission system

The utility model discloses a data and voice transmission port equipment and a data and voice transmission system, relating to the field of communication. The utility model reduces the operating costs of the data service and the voice service effectively, and simplifies the maintenance work. The data and voice transmission port equipment comprises a first RJ45 port (11), a second RJ45 port (12), as well as a first voice port (13). Wherein, the pin 1, 2, 3, and 6 of the first RJ45 port (11) are respectively connected to the pin 1, 2, 3, and 6 of the second RJ45 port (12) accordingly to be used for the transmission of the data signal. The pins 4 and 5 of the second RJ45 port (12), or 7 and 8, are connected to the first voice port (13) to be used for the transmission of the data signal.