Why do digital program-controlled switches sometimes fail to connect online

In daily life, digital program-controlled switches often encounter some minor problems during actual use, such as inability to connect with computer software, and this situation is not uncommon. Customers often come to inquire about why digital program-controlled switches cannot connect properly. Now, the dispatch machine manufacturer will explain it to everyone：

Reasons for the inability to connect digital program-controlled switches and computers:

① The serial port selection is incorrect.

② The wiring sequence of the communication line is incorrect or there is a broken wire.

③ The serial port of the computer is faulty or occupied by other programs.

④ The communication module of the main control board is broken.

Solution:

① The communication cable should be connected to a port on the CPU board of the switch, and the PABX communication port on the system maintenance interface in the software should be consistent with the serial port connected to the computer.

② Use a multimeter to test the line sequence and continuity of the communication cable, or replace the communication cable.

③ Replace the computer.

④ Replace the communication module on the computer board of the digital program-controlled switch.

The above are the reasons and solutions summarized by Shollper Technology for everyone, hoping to help everyone.