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A method for locating frame header in data transmitted by tdm interface and electronic equipment

A technology for data transmission and positioning method, applied in the input/output process of data processing, transmission system, electrical digital data processing and other directions, can solve the problems of tags that do not acquire a single time slot channel data, and fewer ARM chips, etc. Achieve the effect of reducing equipment costs, improving utilization, and high-efficiency data transmission

Active Publication Date: 2022-05-31
GENEW TECH
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Problems solved by technology

There are many ARM chips with this computing capability in the prior art, but there are few ARM chips that can support the TDM interface. Although there are ARM processors to support it, the TDM interface is not professionally designed to transmit multi-channel voice. Obtain the label of a single time slot channel data, the data obtained by the ARM processor is only the data block transmitted in the order of time slots

Method used

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  • A method for locating frame header in data transmitted by tdm interface and electronic equipment
  • A method for locating frame header in data transmitted by tdm interface and electronic equipment
  • A method for locating frame header in data transmitted by tdm interface and electronic equipment

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Embodiment Construction

[0035] Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "a" and "a" are used herein.

[0036] Below in conjunction with the accompanying drawings, through the description of the embodiments, the content of the invention will be further described.

[0044] In one implementation, it is possible to store the data frame to be sent out by using a cyclic memory block,

[0055] When framing each data frame, a frame header identification is added to the content contained in the frame header.

[0058] The time slot switching chip and the digital voice interface are looped back into the PCM serial transmission bus.

[0060] The ARM processor supports a TDM interface, and the TDM interface supports 32 time slots and a rate of 2M. ARM processor is transmitting data

[0064] The TSI loops back the HW (highway) connected with the digital voice interface, and the ARM processor groups frames 1, 2, 3, . . . , 32, and presses the

[0065] The ARM pro...

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Abstract

The present invention provides a method for locating frame headers in data transmitted by a TDM interface and an electronic device. Through the TDM interface, a plurality of data frames according to the preset data frame format are sequentially forwarded to the The time slot exchange chip of the PCM serial transmission bus; the time slot exchange chip forwards each data frame received to the read-write memory through the digital voice interface from the loopback; the ARM processor reads the read-write memory in the read-write memory Each data frame is received, and each data frame is analyzed according to the content contained in each data frame and the preset data frame format, and the frame header is located. The method provided by this embodiment does not need to use one or several fixed time slots to transmit preset signals to locate the frame header information, thus improving the utilization rate of the gap, achieving higher efficiency data transmission, and reducing equipment cost. cost.

Description

A method and electronic device for locating frame header in TDM interface transmission data technical field The present invention relates to the technical field of VoIP communications, and in particular, to the determination of frame headers in a kind of TDM interface transmission data. Bit method and electronic device. Background technique [0002] VoIP (Voice over Internet Protocol) based on IP voice transmission, analog signal (Voice) Digitization, in the form of data packets (Data Packet) on the IP network (IP Network) for real-time transmission. VoIP can Transport voice, fax, video, and data services over IP networks. At present, existing VoIP systems usually use ARM processors to process call control messages and special-purpose voice DSPs. To manage the codec algorithm of the voice, the dedicated voice DSP provides a TDM interface to access the data exchanged by the time slot. With ARM processing With the improvement of processor processing power, a 1.2Ghz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/22H04L69/06H04M7/00G06F3/16G06F13/28
CPCH04L69/22H04L69/06H04M7/006G06F3/162G06F13/28
Inventor 谭冰孟庆晓吴闽华
Owner GENEW TECH
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