TE560pro/590pro是中欧体育面向商业用户打造的数字对讲机，采用先进的数字悦音和双时隙技术，最大程度保证语音的纯净，解锁语音通信新风范。通话容量比模拟增加一倍，是您商业对讲的实惠选择。

TE560pro/590pro is a digital walkie-talkie designed for business users, using advanced digital sound and dual-time slot technology to ensure the purity of voice to the greatest extent and unlock a new style of voice communication. Twice the call capacity compared to analog, making it an affordable choice for your business intercom.

TE85EJ是中欧体育面向商业用户打造的数字中继台。支持数字与模拟双制式,可实现数模系统平滑过渡。支持IP互联模式,可实现大区域、广范围的通信覆盖,通过增加软硬件方式,支持升级为RPT商业专业集群或PDT公共安全集群,是您构筑专业数字无线通讯系统的完美之选.

The TE85EJ is a digital repeater built by Lielong for business users. It supports digital and analog dual systems, which can realize the smooth transition of digital and analog systems. Support IP interconnection mode, can achieve large-area, wide-range communication coverage, by increasing software and hardware mode, support upgrade to RPT commercial professional cluster or PDT public safety cluster, is your perfect choice to build a professional digital wireless communication system.

RE660/680,是按照IEC-RPT商业专业级数字集群标准打造。采用先进的数字悦音和双时隙技术,最大程度保证语音的纯净,解锁语音通信新风范

RE660/680 is built in accordance with the IEC-RPT commercial professional digital trunking standard. It adopts advanced digital sound and dual-time slot technology to ensure the purity of voice to the greatest extent and unlock a new style of voice communication

RPT商业专业级数字中继台IEC-RE95E」,符合标准DMR协议,支持IP互联模式,可实现大范围的通信覆盖。优秀的制造品质与强大的通讯能力,将为您带来数字无线通信的卓越体验

RPT Commercial Professional Digital Repeater IEC-RE95E", in line with the standard DMR protocol, supports IP interconnection mode, and can achieve a wide range of communication coverage. Excellent manufacturing quality and strong communication capabilities will bring you an excellent experience of digital wireless communication

中欧体育IEC-LE7300G是一款PDT数字集群对讲机，使用显示屏，双时隙、4FSK调制、数字语音压缩技术，内置超大音量喇叭，语音清晰。拥有高效频谱效率、通信距离远、抗干扰能力强、省电、模数兼容以及丰富的语音数据业务功能等特点。遵循高性价比、安全保密、大区制、可扩展和模数平滑过渡的五大原则，有效地解决了多种专业通信网融合通信的问题。

Lielong IEC-LE7300G is a PDT digital trunking walkie-talkie, using a display screen, dual time slot, 4FSK modulation, digital voice compression technology, built-in super large volume speaker, clear speech. It has the characteristics of high spectrum efficiency, long communication distance, strong anti-interference ability, power saving, analog-to-digital compatibility, and rich voice data service functions. Following the five principles of high cost performance, security and confidentiality, large regional system, scalability and smooth analog-to-digital transition, it effectively solves the problem of integrated communication of a variety of professional communication networks.

中欧体育公司研发推出的PDT专业数字中继台IEC-LE7500A/7600X,符合标准DMR/PDT协议,良好兼容其他符合DMR/PDT协议的终端。支持IP互联模式,可实现大范围的通信覆盖。IEC-LE7500A/7600X优秀的制造品质与强大的通讯能力,将为您带来数字无线通信的卓越体验。

The PDT professional digital repeater IEC-LE7500A/7600X developed and launched by Lielong Company conforms to the standard DMR/PDT protocol and is well compatible with other terminals that conform to the DMR/PDT protocol. It supports IP interconnection mode to achieve a wide range of communication coverage. IEC-LE7500A/7600X's excellent manufacturing quality and powerful communication capabilities will bring you an excellent experience of digital wireless communication.

中欧体育A380S POC公网对讲机是利用现有的移动通信网络（如3G/4G/5G和WiFi）来实现远程通信的无线对讲设备，用户可以实现长距离、跨区域通信，不受地理限制。

Lielong A380S POC public network walkie-talkie is a wireless intercom equipment that uses the existing mobile communication network (such as 3G/4G/5G and WiFi) to achieve long-distance and cross-regional communication.Not geographically restricted.

信源汇聚单元一般都是三层交换机或者三层以上的交换机。核心层是全光网络的主干部分，保障整个网络性能，是AOC全光网的管理设备，核心层交换机的主要目的在于通过高速转发通信，提供快速、可靠的骨干传输结构，因此核心层交换机应该具有如下特性：可靠性、高效性、冗余性、容错性、可管理性、适应性、低延时性等。

The source aggregation unit is generally a Layer 3 switch or more than a Layer 3 switch. The core layer is the backbone of the all-optical network, ensuring the performance of the entire network, and is the management equipment of the AOC all-optical network, and the main purpose of the core layer switch is to provide a fast and reliable backbone transmission structure through high-speed forwarding communication, so the core layer switch should have the following characteristics: reliability, high efficiency, redundancy, fault tolerance, manageability, adaptability, and low latency.

接入交换单元作为全光网核心汇聚单元与光馈扩展单元的节点，具有承上启下的作用，为核心层和扩展层之间提供光传输通道，完成光信号的双向传输。它能够处理来自核心汇聚单元的所有通信量，为整个光网提供一个高速、安全与具有QOS（服务质量）保障能力的数据传输环境，并将其进行平等转发及选路提供到扩展单元。

As the node of the core aggregation unit and the optical feed expansion unit of the all-optical network, the access switching unit plays the role of connecting the upper and lower levels, providing an optical transmission channel between the core layer and the expansion layer, and completing the two-way transmission of optical signals. It is capable of handling all traffic from the core aggregation unit, providing a high-speed, secure, and QOS (Quality of Service) data transmission environment for the entire optical network, and providing it to the expansion unit with equal forwarding and routing.

光馈扩展单元具有两点作用：对交换层传输的信号进行接收，若需要接收该数据要对交换层进行接收响应；对手持终端需要发送的信号数据进行收集，接收手持终端的发送信号向接入交换单元发送该信号并将其进行智能调节15-17db。

The optical feed expansion unit has two functions: it receives the signal transmitted by the switching layer, and if it needs to receive the data, it needs to receive and respond to the switching layer; The signal data that needs to be sent by the handheld terminal is collected, and the transmitted signal of the handheld terminal is received and the signal is sent to the access switching unit and intelligently adjusted by 15-17db.

外形设计简洁、紧凑，具有良好的隐藏性，可安装于吊顶内，若吸附在吊顶以下时可充分与室内环境相融合。产品体积小、重量轻、波束角精确、即使安装在金属天花内，也可确保其性能指针覆盖效果有良好表现。

The appearance design is simple, compact, with good concealment, can be installed in the ceiling, if adsorbed below the ceiling, it can be fully integrated with the indoor environment. The small size, light weight, and precise beam angle ensure good performance pointer coverage even when installed in a metal ceiling.

中欧体育自主研发生产的多腔体反向分路器采用模块化设计、互换性强、操作维护简单，可方便的安装在 19寸标准机柜上。并且为了保证质量，本产品模块均采用国内外上市企业和专业器件。本分路器采用不同模块组件，能更好的抑制无线对讲系统内外出现的各类干扰，用来提高接收信号质量，从根本上改善了多天线架设中难以解决的互调干扰问题。

The multi-cavity reverse splitter independently developed and produced by Lielong adopts modular design, strong interchangeability, simple operation and maintenance, and can be easily installed on a 19-inch standard cabinet. And in order to ensure the quality, the modules of this product are all listed companies and professional devices at home and abroad. This splitter adopts different module components, which can better suppress all kinds of interference inside and outside the wireless intercom system, improve the quality of the received signal, and fundamentally improve the intermodulation interference problem that is difficult to solve in the erection of multiple antennas.

信号匹配单元是异频双工电台，基站发射部分的主要配件，其作用是将发射和接收讯号相隔离，保证接收和发射都能同时正常工作。

The signal matching unit is the main accessory of the transmission part of the base station and the different frequency duplex station, and its function is to isolate the transmitting and receiving signals to ensure that the receiving and transmitting can work normally at the same time.

射频能量滤波分相单元为无源滤波设备，是光纤直放站近端机前级耦合信号的专用产品，是将多个光纤射频近端设备中的上行信号，集成一路，送往接收机的多路耦合设备组件，在系统中起到过滤驻波信号及杂散信号的主要作用。

The RF energy filtering split-phase unit is a passive filtering device, which is a special product for the front-stage coupling signal of the near-end unit of the optical fiber repeater, and is a multi-way coupling equipment component that integrates the uplink signals in multiple optical fiber RF near-end devices and sends them to the receiver, which plays the main role in filtering the standing wave signal and spurious signals in the system.

光纤拉远单元又称之为远近光端机，即近端光端机与远端光端机,是光信号传输的终端设备，由中欧体育公司自主研发的精密型机架式近端光端机外观精致，功能强大，性价比高，远近光端机专门针对专业客户对于防尘、防潮、防高/低温、高稳定性等特殊需求由中欧体育公司自主研发的。

The optical fiber remote unit is also called the far and near optical transceiver, that is, the proximal optical transceiver and the remote optical transceiver, is the terminal equipment of optical signal transmission, the precision rack-type near-end optical transceiver independently developed by Lielong company is exquisite, powerful, cost-effective, LYR-400-1310S wall-mounted remote optical transceiver is specially designed for professional customers for dustproof, moisture-proof, high/low temperature, high stability and other special needs independently developed by Lielong company.

干线放大器，简称干放，是在功率变低而不能满足覆盖要求时的信号放大设备。当信号源设备功率难以达到覆盖要求时，该设备可以放大信号源（一般是微蜂窝）的功率，以覆盖更多的区域

An amplifier, or dry amplifier for short, is a signal amplification device when the power becomes low and cannot meet the coverage requirements. When the power of the source device is difficult to meet the coverage requirements, the device can amplify the power of the signal source (usually a small cell) to cover more areas

定向耦合器是一种四端口无源器件，有一个输入端口，一个输出端口，一个耦合信号端口以及一个内部端接端口。定向耦合器用于将一条传输线中特定比例的传输功率通过另一个接口或端口进行耦合。从信号采样到信号生成和信号注入。

A directional coupler is a four-port passive device that has an input port, an output port, a coupled signal port, and an internal termination port. Directional couplers are used to couple a specific proportion of the transmitted power in one transmission line through another interface or port. From signal sampling to signal generation and signal injection.

功率分配器是指天馈系统中为保障每个天线输出功率达到一定范围所使用的线路分支器，功率分配器是将链路中信号等分为多路输出，是实现无线信号等功率分配的射频器件。

Power divider refers to the line branch device used in the antenna feeder system to ensure that the output power of each antenna reaches a certain range, and the power divider is to divide the signal in the link into multiple outputs, and is a radio frequency device that realizes the power distribution of wireless signals.

DQT-400XD吸顶天线作为无线对讲系统中前段信号覆盖设备是必不可少的传输介质；信号覆盖的效果取决于吸顶天线的质量及分布合理性。

DQT-400XD ceiling antenna is an indispensable transmission medium as the front signal coverage equipment in the wireless intercom system; The effectiveness of the signal coverage depends on the quality and distribution of the ceiling antenna.

中欧体育自主研发生产的多腔体反向分路器采用模块化设计、互换性强、操作维护简单，可方便的安装在 19寸标准机柜上。并且为了保证质量，本产品模块均采用国内外上市企业和专业器件。本分路器采用不同模块组件，能更好的抑制无线对讲系统内外出现的各类干扰，用来提高接收信号质量，从根本上改善了多天线架设中难以解决的互调干扰问题。

The multi-cavity reverse splitter independently developed and produced by Lielong adopts modular design, strong interchangeability, simple operation and maintenance, and can be easily installed on a 19-inch standard cabinet. And in order to ensure the quality, the modules of this product are all listed companies and professional devices at home and abroad. This splitter adopts different module components, which can better suppress all kinds of interference inside and outside the wireless intercom system, improve the quality of the received signal, and fundamentally improve the intermodulation interference problem that is difficult to solve in the erection of multiple antennas.

信号匹配单元是异频双工电台，基站发射部分的主要配件，其作用是将发射和接收讯号相隔离，保证接收和发射都能同时正常工作。

The signal matching unit is the main accessory of the transmission part of the base station and the different frequency duplex station, and its function is to isolate the transmitting and receiving signals to ensure that the receiving and transmitting can work normally at the same time.

射频能量滤波分相单元为无源滤波设备，是光纤直放站近端机前级耦合信号的专用产品，是将多个光纤射频近端设备中的上行信号，集成一路，送往接收机的多路耦合设备组件，在系统中起到过滤驻波信号及杂散信号的主要作用。

The RF energy filtering split-phase unit is a passive filtering device, which is a special product for the front-stage coupling signal of the near-end unit of the optical fiber repeater, and is a multi-way coupling equipment component that integrates the uplink signals in multiple optical fiber RF near-end devices and sends them to the receiver, which plays the main role in filtering the standing wave signal and spurious signals in the system.

光纤拉远单元又称之为远近光端机，即近端光端机与远端光端机,是光信号传输的终端设备，由中欧体育公司自主研发的精密型机架式近端光端机外观精致，功能强大，性价比高

The optical fiber remote unit is also called the far and near optical transceiver, that is, the proximal optical transceiver and the remote optical transceiver, which is the terminal equipment for optical signal transmission

干线放大器，简称干放，是在功率变低而不能满足覆盖要求时的信号放大设备。当信号源设备功率难以达到覆盖要求时，该设备可以放大信号源（一般是微蜂窝）的功率，以覆盖更多的区域

An amplifier, or dry amplifier for short, is a signal amplification device when the power becomes low and cannot meet the coverage requirements. When the power of the source device is difficult to meet the coverage requirements, the device can amplify the power of the signal source (usually a small cell) to cover more areas

定向耦合器。是指天馈系统中为保障每个天线输出功率达到一定范围所使用的线路分支器，定向耦合器以dB为单位，可以将信号不均匀地分成两路，有多种出厂预设规格可供选择使用。

Directional coupler. It refers to the line branch used in the antenna feeder system to ensure that the output power of each antenna reaches a certain range, and the directional coupler is in dB, which can divide the signal into two channels unevenly, and there are a variety of factory preset specifications to choose from.

The optical fiber remote unit is also called the far and near optical transceiver, that is, the proximal optical transceiver and the remote optical transceiver, which is the terminal equipment for optical signal transmission

Power divider refers to the line branch device used in the antenna feeder system to ensure that the output power of each antenna reaches a certain range, and the power divider is to divide the signal in the link into multiple outputs, and is a radio frequency device that realizes the power distribution of wireless signals.

吸盘天线属于高增益天线，主要的作用是辐射和接收无线电波。吸盘天线是把天线通过底部的吸盘将其固定在某一个地方，避免出现意外情况，由于它的吸盘底座比较稳固，所以被应用于车辆上面。在无线模块行业，吸盘天线常常和无线模块配合使用，以此达到增加无线模块的通信距离的目的。

Suction cup antennas are high-gain antennas, and their main role is to radiate and receive radio waves. The suction cup antenna is to fix the antenna in a certain place through the suction cup at the bottom to avoid accidents, because its suction cup base is relatively stable, so it is applied to the vehicle. In the wireless module industry, suction cup antennas are often used in conjunction with wireless modules to increase the communication distance of wireless modules.