GrenTech is a leading Chinese provider of RF and telecommunications integration solutions. It has over 300 technical patents and 12 overseas branches. The document provides an overview of GrenTech's business areas including network coverage solutions, new energy products, turnkey services, digital city applications, transmission networks, data communication equipment, and radar systems. Examples of projects are given for indoor/outdoor network coverage, solar/wind hybrid systems, turnkey site installations, digital city implementations, microwave/optical networks, campus/enterprise networks, and radar deployments at airports.
SDH(Synchronous Digital Hierarchy )
MSTP(Multi-Service Transfer Platform)(基于SDH 的多业务传送平台)是指基于SDH 平台同时实现TDM、ATM、以太网等业务的接入、处理和传送,提供统一网管的多业务节点。
PDH(Plesiochronous Digital Hierarchy)
--Core hosting provided from 10G to the 155M edge hosting access a full range of optical transmission platform。
--Deliver carrier-class differentiated services such as Ethernet Private Networks.
--Offer a low-entry-cost metro and access transport platform.
--Provide a flexible, scalable mobile network.
ELPEthernet Linear Protection
OLT:optical line terminal 光线路终端。用于连接光纤干线的终端设备
ONU:optical network unit 光网络节点。分有源与无源两类。一般把包括光接收机,上行光发射机,多个桥接放大器,网络监控设备叫做光网络节点
IES:internet enhanced service 因特网增强服务
EPON:Ethernet passive optical network 以太无源光网路,对于商业用户,可以根据业务需求和用户规模的不同,采取不同的实施模式,如FTTO、FTTB或FTTC
VPN:virtual private network 虚拟专用网络,在公用网路上建立专用网络的技术,远程访问技术的一种。
Firewall:防火墙,用于保护网路完全,过滤对网络有害的数据,可安装在路由器,电脑中
Router:连接因特网中各局域网,广域网的设备,会根据网路的特性来进行自动安排数据流量路由类型
Switch:交换机。局域网中用于数据交换的设备