Method and terminal for playing voice file to TDM side based on DSP

Abstract

The invention discloses a method and terminal for playing a voice file to a TDM side based on a DSP, and the method comprises the steps: building a DSP channel between a media board processor and a mainboard processor; enabling the mainboard processor to receive a first data package sent by the DSP channel at preset intervals, employing the preset voice data for replacing the data in the first data package, and obtaining a second data package; interchanging the source address and target address of the DSP channel, so as to transmit the second data package to the media board processor through the DSP channel; transmitting the second data package to a time slot of a TDM bus through the media board processor, thereby achieving the playing of the voice data carried by the second data package to the TDM. According to the invention, the voice playing at the TDM side is achieved through the building of the DSP channel between the mainboard processor and the media board processor, and there is no need of an FPGA chip, thereby saving the cost. Meanwhile, the method is not limited by the internal memory of the DSP for storing a voice file, and improves the success rate of voice playing.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and a terminal for playing voice files to a TDM side based on a DSP. Background technique [0002] VoIP (Voice over Internet Protocol) digitizes the analog signal (Voice) and transmits it in real time on the IP network (IP Network) in the form of data packets (Data Packet). VoIP can transmit services such as voice, fax, video, and data on the IP network. [0003] At present, there are two main methods for the VoIP system to play voice to the TDM side. One is to use a dedicated chip FPGA to read the voice file in Flash, and the FPGA program directly plays voice to the TDM side of the VoIP system; the other can use a DSP chip The internal interface plays voice to the TDM side. However, these two methods have corresponding shortcomings. The first method requires an additional FPGA chip, which increases the production cost of the terminal equipment; the second method...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and a terminal for playing voice files to the TDM side based on DSP in view of the deficiencies in the prior art, so as to solve the need for an additional FPGA chip in the existing method and increase the production of terminal equipment cost problem

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