IMPLEMENTATION METHOD AND IMPLEMENTATION SYSTEM FOR PTT CALL BASED ON VOIP TECHNOLOGY

摘要

Disclosed are an implementation method and implementation system for a PTT call based on VoIP technology. A header extension is performed on an RTP voice data packet transmitted to a PTT client, a data source identifier of a current call is configured in a header extension part, and a PTT server is allowed to determine a permission-to-speak of the PTT client on the basis of the data source identifier currently being passed through, and to transmit to a third-party PTT client in the form of a multicast the RTP voice data packet transmitted by the PTT client having the permission-to-speak, thus implementing a group call function. Also, the implementation of the performance of the header extension on the RTP voice data packet is relatively simple and easy to implement, and only one data source identifier is needed to allow the PTT server to make a correct determination, thus facilitating system design and promotion.