LTE module production line test circuit

The utility model discloses an LTE module production line test circuit. Comprising a USB line switching chip and a data transmission port, a VCC pin of the USB line switching chip is connected with a 3.8 V power supply and is grounded through a first capacitor, an S pin of the USB line switching chip is connected with the data transmission port through a first resistor, and an HSD2 + pin and an HSD2-pin of the USB line switching chip are directly connected with the data transmission port in series. A D + pin and a D-pin of the USB line switching chip are connected with the LET module, and an HSD1 + pin and an HSD1-pin of the USB line switching chip are connected with a main control chip of the router. According to the utility model, the USB line switching chip is additionally arranged as the switching control of lines in the circuit, so that the design requirement of the traditional LTC CPE can be met, the connection between the USB signal of the LTE module and the router master control can be cut off, and th