Issues and challenges of implementing a wireless local loop (WLL) based telephone access network

The objective of this article is to bring the benefits of NEC's experience to a number of telecom operators who are on the verge of either planning or implementing wireless local loop (WLL) based telephone access networks. Though the article provides details of NEC's experiences based on NEC's DCTS (digital cordless telephone system) WLL system, the topic described is relevant to any WLL based telephone access networks. This article presents and shares the experiences based on the actual field deployment of time bound WLL based telephone access network deployed by the NEC in various countries. Some of the WLL based networks were contracted by NEC on turnkey basis which provided greater insight into the implementation of WLL systems. A number of challenges and issues have been encountered by the NEC and their partners during the initial phase of implementation of the WLL networks.