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Module connecting 2B+D scheduling desks by E1 line and method

A line connection and dispatcher technology, applied in the field of data transmission, can solve the problems of restricting the application of dispatcher, affecting the quality of 2B+D signals, increasing the deployment cost of dispatcher, etc., achieving the effect of increasing the effective distance and realizing long-distance signal transmission

Inactive Publication Date: 2009-10-14
BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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Problems solved by technology

However, the maximum transmission distance of twisted pair is generally about 100 meters, which greatly affects the transmission distance of 2B+D signals based on twisted pair transmission, thus limiting the application of dispatching consoles
The use of twisted pair switching equipment or amplification equipment will increase the deployment cost of the dispatching station, and will also affect the quality of the transmitted 2B+D signal

Method used

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  • Module connecting 2B+D scheduling desks by E1 line and method
  • Module connecting 2B+D scheduling desks by E1 line and method
  • Module connecting 2B+D scheduling desks by E1 line and method

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Embodiment Construction

[0026] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0027] figure 1 It is the structural diagram of the modules connected to the 2B+D dispatching console through the E1 line. figure 1 Among them, the module connected to the 2B+D dispatching station through the E1 line includes the 2B+D interface, the 2B+D and E1 conversion unit and the E1 interface. Among them, the 2B+D interface is connected with the 2B+D and E1 conversion unit, and is used to connect with external equipment through the twisted pair 101 to transmit 2B+D signals; the 2B+D and E1 conversion unit is connected with the E1 interface, and its function is The 2B+D signal is converted into an E1 signal, and the E1 signal can also be converted into a 2B+D signal; the E1 interface is connected to an external d...

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Abstract

The invention discloses a module connecting 2B+D scheduling desks by an E1 line and a method, belonging to the technical field of data transmission. The module comprises 2B+D interfaces, a 2B+D and E1 conversion unit and an E1 interface which are connected in sequence; the method for connecting the scheduling desks comprises the following steps of: randomly selecting three non-zero time slots of the E1 line and leading signals of two B channels and signals of one D channel to be respectively transmitted by the three selected time slots along the E1 line; the method for connecting 2 to 10 scheduling desks is as follows: the time slots 1, 2 and 3 of the E1 line are respectively used for transmitting 2B+D signals of the first scheduling desk; the time slots 4, 5 and 6 are respectively used for transmitting 2B+D signals of the second scheduling desk; and so forth, till the 31 time slots of the E1 line are distributed completely. The invention replaces the twisted pair cable with the E1 line to connect 2B+D scheduling desks and transmits 2B+D signals, thus leading the effective distance of signal transmission to be increased.

Description

technical field [0001] The invention belongs to the technical field of data transmission, and in particular relates to a module and a method for connecting a 2B+D dispatching station through an E1 line. Background technique [0002] At present, most of the voice dispatching consoles used in the market adopt the 2B+D data transmission mode. In this transmission mode, each bandwidth of the B channel is 64kbps, and the bandwidth of the D channel is 16kbps. In this way, the B channel passes 64k bit data per second, and the D channel passes 16k bit data per second. 2B+D usually uses twisted pair as the medium of data transmission. However, the twisted pair transmission distance is generally about 100 meters at most, which greatly affects the transmission distance of the 2B+D signal based on the twisted pair transmission, thus limiting the application of the dispatching console. The use of twisted-pair switching equipment or amplification equipment will increase the deployment c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/04
Inventor 冯岩
Owner BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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