VoIP (Voice over Internet Protocol) telephone message transmission method of high-speed maglev train-ground communication system

• Main Authors: YANG HAINING, LI XINGHAO, FAN YONG, LI TINGJUN, CHENG YUJIAN, HE PENGCHENG
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a VoIP (Voice over Internet Protocol) telephone message transmission method of a high-speed maglev train-ground communication system, which takes a high-speed maglev train or a ground control center as a signal sender and the other party as a signal receiver; comprising the following steps: S1, transmitting a VoIP telephone message to communication equipment of a signal sender through a TCP/IP protocol; s2, the VoIP telephone message is analyzed, and an IP address is allocated; s3, processing the content of the application layer of the VoIP telephone message; s4, transmitting the framed signal to a signal receiver base station through a non-TCP/IP (Transmission Control Protocol/Internet Protocol); s5, analyzing the received framing signal, determining whether the framing signal is RTP/RTCP or SIP, and if the framing signal is an RTP/RTCP protocol, directly performing VoIP packaging; if the protocol is the SIP protocol, de-encapsulation and packaging are carried out, and then VoIP packa