Data transmission channel establishment method, system, device and medium

The invention provides a data transmission channel establishment method, system and device and a medium. The method comprises the following steps: receiving a channel establishment request sent by a connection initiating end; identifying a channel establishment indication identifier in the channel establishment request, the channel establishment indication identifier comprising a service identifier, or comprising any one or more of the service identifier and a channel identifier or an end identifier; acquiring a link technology code indicated by the channel establishment indication identifier from a pre-established configuration table based on the channel establishment indication identifier; and executing the link technology code to establish the data transmission channel between the connection initiating end and the connection receiving end. According to the method, the link technology code is stripped from the channel establishment request, so that service processing and channel connection decoupling are re