Abstract: An annular shaped-charge and blasting housing and a use method thereof are provided. The annular shaped-charge and blasting housing includes a PVC segment and multiple notch grooves. Grooves are notched on a W-shaped PVC segment formed by machining. The notching angle of the groove and the spacing distance between the grooves can be adjusted according to use requirements. And, the W-shaped PVC segment after being cut may not be limited to have eight notch grooves, and the number of the notch grooves of a single one PVC segment can be adjusted according to actual working conditions. The PVC segment can be folded and closed to form the annular shaped-charge and blasting housing. Therefore, the housing of the embodiments is simple in production, the linear segment can be bended and folded by utilizing the plasticity of the PVC material. The manufacturing process of the housing is simple and feasible.

Abstract: An annular shaped-charge and blasting housing and a use method thereof are provided. The annular shaped-charge and blasting housing includes a PVC segment and multiple notch grooves. Grooves are notched on a W-shaped PVC segment formed by machining. The notching angle of the groove and the spacing distance between the grooves can be adjusted according to use requirements. And, the W-shaped PVC segment after being cut may not be limited to have eight notch grooves, and the number of the notch grooves of a single one PVC segment can be adjusted according to actual working conditions. The PVC segment can be folded and closed to form the annular shaped-charge and blasting housing. Therefore, the housing of the embodiments is simple in production, the linear segment can be bended and folded by utilizing the plasticity of the PVC material. The manufacturing process of the housing is simple and feasible.

Abstract: This application provides a distributed data transmission method, an apparatus, and a system. When sending RTP data to an output device, an input device determines a delay time of a first output device and a delay time of a second output device based on a device delay control list, and sends the RTP data to the first output device and the second output device based on the delay time of the first output device and the delay time of the second output device, so that times for the first output device and the second output device to output the data are the same. The times for the first output device and the second output device to output the data are controlled. Thus, the first output device and the second output device can output the data simultaneously.

Abstract: A voice over Internet protocol processing method and a related network device are disclosed. The method includes: detecting, by a calling access network element, an off-hook event; encapsulating, by the calling access network element, the off-hook event into first signaling; sending, by the calling access network element, the first signaling to a cloud server; receiving, by the calling access network element, second signaling sent by the cloud server, where the second signaling is used to establish a first transmission path between the calling access network element and the cloud server, and the first transmission path is used to transmit data between the calling access network element and the cloud server; and establishing, by the calling access network element, the first transmission path based on the second signaling. Overall efficiency of the voice over Internet protocol system can be improved, and the construction costs can be lowered.

Abstract: A voice over Internet protocol processing method and a related network device are disclosed. The method includes: detecting, by a calling access network element, an off-hook event; encapsulating, by the calling access network element, the off-hook event into first signaling; sending, by the calling access network element, the first signaling to a cloud server; receiving, by the calling access network element, second signaling sent by the cloud server, where the second signaling is used to establish a first transmission path between the calling access network element and the cloud server, and the first transmission path is used to transmit data between the calling access network element and the cloud server; and establishing, by the calling access network element, the first transmission path based on the second signaling. Overall efficiency of the voice over Internet protocol system can be improved, and the construction costs can be lowered.