Call equipment in aircraft and call link establishing method

The invention relates to the technical field of built-in communication, in particular to a communication link establishing method of aviation built-in communication equipment. According to the method provided by the invention, the defects that link establishment is accidentally failed and non-link establishment is erroneously judged as passive link establishment are overcome, and the reliability of machine-based link establishment communication is improved; the problem of abnormal link establishment response caused by misoperation and high-frequency link disassembly and establishment can be effectively avoided, and the communication stability is improved. 本发明涉及机内通话技术领域，具体涉及一种航空机内通话设备的通话建链方法。本发明方法解决了建链偶发失败以及未建链误判为被动建链的缺陷，提高了机组建链通话的可靠性；可有效避免误操作、高频率拆建链所产生的建链应答异常问题，提高了通信稳定性。