The reporter recently learned from the Shenzhen Municipal Transportation Commission of Guangdong Province that eligible new energy vehicles will be able to enjoy the first hour of free parking privileges in the city's road parking spaces.
The “Circular of the Municipal Transportation Commission†(“Draft for Soliciting Opinionsâ€) for the first time (the first hour) on the day of temporary parking of new energy vehicles on the road prepared by the committee was openly solicited for comments. According to the Exposure Draft, when parking in the Shenzhen road parking space, enjoying the first (first hour) free new energy vehicle on that day needs to be registered in Shenzhen and has received a fixed license plate number. Vehicles that can enjoy preferential policies in accordance with regulations shall belong to the new energy vehicles listed in Article 4 of “Some Policies and Measures for the Promotion and Application of New Energy Vehicles in Shenzhenâ€, that is, they shall be included in the purely electric catalog of the catalogue of automobile products promulgated by the Ministry of Industry and Information Technology. Automotive, plug-in hybrid (including incremental) hybrid and fuel cell vehicles.
In addition, the vehicles shall belong to the motor vehicles that are allowed to temporarily park on the roads specified in Article 2 of the “Measures for the Administration of Temporary Parking of Motor Vehicles in Shenzhen Cityâ€, namely, micro, small and medium-sized passenger vehicles, and micro- and light-duty trucks.
The parking space user intending to enjoy the parking preferential policies must use the official parking lot payment system of Shenzhen City to apply the “Appropriate Parking†APP software to bind the correct number of new energy vehicle license plates and the rear of the frame number, and use it at the time of parking. "Parking" APP software enter the correct license plate number information and follow the prompts.
In general, ONU devices can be classified according to multiple application scenarios such as SFU, HGU, SBU, MDU, and MTU.
1. SFU type ONU deployment
The advantage of this deployment method is that the network resources are relatively abundant, and it is suitable for independent households in the FTTH scenario. It can ensure that the user terminal has broadband access functions, but does not involve more complicated home gateway functions. The SFU in this environment has two common forms: it provides both an Ethernet interface and a POTS interface; it only provides an Ethernet interface. It should be noted that SFU can provide coaxial cable functions in both forms to facilitate the realization of CATV services, and it can also be used with home gateways to facilitate the provision of value-added service functions. This scenario is also applicable to enterprises that do not need to exchange TDM data.
2. HGU type ONU deployment
The HGU type ONU terminal deployment strategy is similar to the SFU type, except that the functions of the ONU and RG are integrated in hardware. Compared with SFU, it can realize more complicated control and management functions. The U-shaped interface in this deployment scenario is built into the physical device and does not provide an interface. If you need to provide an xDSLRG device, you can directly connect multiple types of interfaces to the home network, which is equivalent to a home gateway with an EPON upstream interface. Used in FTTH occasions.
3. SBU type ONU deployment
This deployment scheme is more suitable for independent enterprise users to construct the network under the FTTO application mode, and is based on the enterprise change of SFU and HGU deployment scenarios. The network in this deployment environment can support broadband access terminal functions and provide users with multiple data interfaces including El interface, Ethernet interface, and POTS interface, which can meet the needs of enterprises in data communication, voice communication, and TDM dedicated line services. Usage requirements. The u-type interface in the environment can provide enterprises with a frame structure with multiple attributes, which is more powerful.
4. MDU type ONU deployment
This deployment scheme is suitable for multi-user network construction under multi-application modes such as FTTC, FTTN, FTTCab, and FTTZ. If enterprise-level users have no demand for TDM services, this solution can also be used for EPON network deployment. This deployment solution can provide broadband data communication services for multiple users, including Ethernet/IP services, VoIP services, and CATV services and other multi-service modes, with powerful data transmission capabilities. Each of its communication ports can correspond to a network user, so in comparison, its network utilization rate is higher.
5. MTU-type ONU deployment
The deployment plan is based on the commercialization of the MDU deployment plan. It can provide multi-enterprise users with multiple interface services including Ethernet interfaces and POTS interfaces, and can meet enterprise voice, data, TDM private line services and other services demand. If combined with the slot type implementation structure, richer and more powerful business functions can be realized.
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