Voice transmission based on transmission control protocol

Abstract

A sound transmission method based on transmitting control protocol, setup at least two connections of the transmitting control protocol between the sound send end and the receive end for the sound connection which based on the transmitting control protocol, and sends the message with sound data assign to every connection of the transmitting protocol according to rules; the receive end get the data wraps from every transmitting control protocol, keep and reorder them in the buffer to get the message list which same as the send end; the sound coding system of the receive end get and decode data from the buffer according to the scheduled period. The invention can overcome the shortage, and improve the reliability and practicability of the transmitting sound by TCP (transfer control protocol) connection and the quality of the voice.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a voice transmission method based on Transmission Control Protocol (TCP). Background technique [0002] With the rise of NGN (Next Generation Network), a large number of IP phones are used in enterprises or homes. The enterprise's own LAN system is generally connected to the Internet (Internet) through Proxy (proxy service) or firewall. In order to ensure the security of the enterprise LAN and avoid external attacks on the internal resources of the enterprise, a large number of enterprise firewalls only enable the HTTP (Hypertext Transfer Protocol) proxy, and other access methods are prohibited. In this case, in order to make VoIP (Voice over Internet Protocol, that is, IP phone) work normally, HTTP tunneling technology is generally used, that is, an HTTP tunnel is established between the VoIP terminal in the LAN and the tunnel server on the Internet. This tunnel can pass...

AI Technical Summary

Problems solved by technology

At the same time, the TCP protocol guarantees the order of the transmitted messages. The order of the messages received by the application at the receiving end must be consistent with that of the sending end. Before the previous message is successfully sent, the next message will be blocked.

[0008] Packet loss and jitter caused by network reasons are unavoidable

When using TCP to carry voice, if the confirmation message sent by the receiving end is lost, or the sending end loses multiple messages, it will cause the sending end to wait and resend overtime, which will cause long-term data interruption at the receiving end, affecting voice quality

Therefore, if the TCP protocol is used to carry voice information in a poor network environment, the result of packet loss will be unbearable, which will seriously affect the understanding of the content of the conversation between the two parties.

Images