随着我国电信市场多运营商竞争格局迅速形成 ,各地固定网纷纷大规模启动关口局 (网间接口局 )建设 ,以满足互连互通、网间结算和实现网间业务的需求。令人瞩目的是 ,近年国产设备在关口局建设热潮中崭露峥嵘，在这一领域将确立优势。新世纪之初 ,网间接口局建设成为各地固定电 With the rapid development of the competition pattern of multiple operators in China’s telecom market, various fixed networks have launched large-scale establishment of gateway offices (inter-network interface offices) one after another to meet the needs of interconnection and inter-network settlement and inter-network services. What attracts people’s attention is that in recent years, domestic-made equipment has emerged in the booming construction of the gateway bureau and will establish its advantages in this field. At the beginning of the new century, the Internet Interface Bureau was established as a fixed power station