Technology evolution in Wireless Access has now enabled the provision of affordable and low power Broadband Internet Services. With increased competition among operators to attract subscribers, there is an increased need to choose a differentiating technology that provides the best in class voice and data services at the lowest cost of ownership. In Wireless Access Networks, with the increased demand for spectrum, a technology, which is spectrally efficient and can pack more bits/second/Hertz is key. The technology should also be able to provide toll-quality voice, associated features such as fax and payphone, seamless operation with legacy wired network and all types of Internet services ranging from Voice over IP to Video on Demand and Multicast. We have built on our 15 years design and deployment experience in 25 countries to continuously innovate in affordable wireless technology solutions. All our access solutions are scalable and can cater to both large urban subscriber densities and extremely sparse rural coverage requirements. They have the lowest power and space requirements and are engineered for the harsh requirements of green-field deployments. corDECT (a DECT complaint air interface with significant enhancements to the original ETSI (European Telecommunications Standards Institute) standard) base Wireless Local Loop technology provides toll-quality voice and simultaneous 64 kbps Internet service. 3 million lines of corDECT has been deployed so far. BroadbandcorDECT and BroadbandcorDECT-NG extend the per-user data rates to 512 kbps and 2 Mbps with the best spectrum efficiency in their class and use an all-IP architecture that still allows seamless interconnect to legacy wired networks.

^BroadbandcorDECT was developed by incorporating proprietary extensions to the original ETSI DECT standard to provide a per-user date rate of 512 kbps. It incorporates adaptive multi-level GFSK modulation and packet scheduling based on required QoS, and channel condition. This system also provides polarization diversity with selection between horizontal and vertical polarization. Fast channel setup at the MAC layer (of the order of 20 ms) ensures that the system can operate in Always-ON mode where the network connections are suspended when there is no traffic.

^BroadbandcorDECT supports all internet services such as Voice Over IP, Video On Demand and Multicast services. It implements VLAN (802.1q, 802.1p), Multicast, Routed and Bridged mode of operation supporting PPPoE/DHCP mode of access, security features such as ARP spoofing, Broadcast/Multicast Strom Control and Access Control List (ACL).

^BroadbandcorDECT architecture implements advanced end-to-end QoS (Quality of Service), for delivery of delay and jitter sensitive applications. Apart from the regular policing and scheduling of traffic based on the class, the class is also mapped to the physical level service flows. The physical level QoS includes ARQ with adaptive timeouts to suit any particular application, and wireless traffic scheduling. These advanced QoS features provide real-time, non-real time, high reliability channels for delivery traffic for various Internet applications.

Telecommunication networks, especially in the emerging economies, require technologies that enable rapid and cost effective deployment. These networks must be capable of providing Broadband Access and Value Added Services in addition to the basic toll-quality voice connectivity in the local loop under diverse deployment scenarios - for high-density urban and suburban subscriber areas or for sparsely populated areas.

^BroadbandcorDECT offers telecommunications service providers a solution that has the following features and benefits:

• Toll-Quality Voice and Always ON 512 kbps Data Service per user
• Acts as a stand-alone switch providing comprehensive suite of switching functions for 5000 subscribers, providing R2MF/SS7 interface towards the parent exchange
• Acts as an Access Network transparently extending all the features and services provided by the Local Exchange using V5.2 protocol
• Standard two-wire POTS interface at the Subscriber Unit provides, G3 Fax, MODEM, Home Meter, CCB, etc.
• Comprehensive EMS providing all FCAPS management function and also interfaces to central NMS
• GUI-OMC Console for user friendly operations and maintenance
• Triple Play Data Services

Functionality

• Support for video-conferencing and related applications like e-medicine, e-agriculture, e-governance, e-education

Profitability

• Enhanced functionality enables higher ARPUs
• Viable at lower subscriber densities due to lower initial investments
• Enables rapid roll-out of networks to maintain competitive advantage
• Provides crucial first mover advantage in Greenfield deployments

Modularity

• Minimal start-up requirements
• Scales seamlessly as subscriber demand grows
• Provides comprehensive coverage while minimizing sunk cost and uncertain investment

Flexibility

• Employs innovative sub-systems - ensures coverage in widely dispersed subscriber areas and varying terrain
• Enables cost-effective deployments in urban, suburban and rural environments

Reliability

• Ensures network quality and up time using the corDECT EMS
• Provides an overall, synoptic, easy-to-read view of the network
• Continually monitors network health and performance to minimize downtime and operational losses

The ^BroadbandcorDECT system can be essentially classified into 3 categories of sub-systems viz Exchange Infrastructure, Access Infrastructure (Equipment that is installed outside the exchange or at remote locations) and Subscriber Terminals.

The Exchange Infrastructure consists of the multi-service voice and data switch, corVAN – (The corDECT Versatile Access Node), an Operations and Maintenance Console (GUI-OMC Console) for local management, Element Management System (EMS) is used for remote centralized management.

The Access Infrastructure consists of XBS and the BXD. XBS is the Base Station of ^BroadbandcorDECT system that provides voice and broadband data services over the DECT air Interface to wireless subscribers. BXD is the Base Station Distributor that allows remote location of multiple XBSs. A BXD can be connected to the corVAN through a variety of media including copper, fiber and radio.

There are a variety of Subscriber Terminals in the ^BroadbandcorDECT system, referred to as FRS (Fixed Remote Stations) providing a range of features from only-voice, only-data, data and voice, and advanced value added services. FRS consists of two units, one outdoor mountable Air Link Module (ALM) and another indoor Customer premises Power Pack (CPP).