This invention relates to the field of
industrial communication technology and discloses a communication method and apparatus for industrial switches to connect walkie-talkies without a gateway. The method involves a
management unit receiving a walkie-talkie terminal registration request, assigning a unique
virtual LAN identifier, configuring a
multicast group address, and establishing a binding relationship. An analog audio interface module receives analog voice signals and accompanying signaling, performs sampling, analog-to-
digital conversion, compression encoding, and parses the PTT trigger
signal to generate a transmit enable
signal. Data frames are then encapsulated and sent to the switching
chip. The switching
chip queries the forwarding table based on the transmit enable
signal and the walkie-talkie identifier, adds a
virtual LAN identifier, and forwards the data frames via
multicast. The
management unit continuously monitors link quality and automatically switches the channel to a
backup port when quality deteriorates, ensuring stable and reliable communication, simplifying the
network architecture, and reducing costs.