Introduction : : Wireless Issues : : Application Notes : : Manufacturer's Tests

Microwave, laser and radio are increasingly used to distribute broadband services where terrestrial infrastructure, copper or fibre, does not exist. Collectively known as 'Wireless' communication, some challenges arise when interconnecting these 'last mile' wireless services to high-speed Carrier Backbone Services.

Metrodata's wealth of experience interconnecting carrier services to all types of customer Premise equipment (CPE) interfaces has been applied to the wireless arena to ensure you will only have solutions to your challenges. Speeds from n*64kbit/s up to 622 Mbit/s via fibre or copper into X21, V35, HSSI and ATM are all possible.

Introduction to Metrodata Wireless Division

The Traditional market for Metrodata products has been in the leased line area, providing conversion technologies from Terrestrial Wide area Technologies to customer type interfaces such as X.21, V.35 and High Speed Serial Interfaces (HSSI) on Routers, Video, Voice and Data products. These services have been delivered by carrier organisations on copper, coaxial and fibre optic cables.

With the increase of bandwidth required by users it has become more and more difficult to provision cable services to these locations. This might be difficulty in laying new cables, digging up roads etc. or even just the time required to lay cables.

Laser, Microwave, Radio, and optical systems are becoming more widely used to provision these services. These ensure quick and reliable connections of the last mile to customer premises. We class this whole range of services as “Wireless”.

What are the Issues in Wireless?

This however still gives a lot of connectivity issues in connecting these to terrestrial services for long distance transmission. Traditionally these last mile solutions will be connected to carrier networks using high-speed backbones of cable and fiber optics. Metrodata are heavily involved in producing connectivity solutions to connect these Last Mile “Wireless” services to High-Speed carrier backbone services.

Basically the “Wireless” system can be considered as a high-speed point to point link and the full range of Metrodata products for leased line connectivity can be used to connect customer premises equipment to the “Wireless” System.

A lot of “Wireless” manufacturers produce customer premises interfaces but in a lot of cases they might not have the specific speed or interface required by the client.

Currently we categorise our Wireless Applications into the following 8 categories:-

• Standard Conversion Services [See Diagram and Brief Overview] [ APN033 - Wireless Standard Conversion]
• Speed Conversion [See Brief Overview]
• ATM Connectivity [See Diagram and Brief Overview]
• Circuit Emulation [See Diagram and Brief Overview]
• Concentration [See Diagram and Brief Overview]
• Carrier to Carrier Applications [See Diagram and Brief Overview]
• Point to Multi-point [See Diagram and Brief Overview]
• GSM Cellular Network Back-haul [See Diagram and Brief Overview]

Review our application notes:

•  UMTS Network Rollout - Saving Money - an interesting approach - ATM DSU's
•  Managing Metrodata Equipment - Local and Remote Management Options - All DSU Products
•  Leased Line Performance Monitoring and Testing - Using Metrodata Managed DSU Products
•  Converting between Wireless Equipment Interfaces and Customer Premises Equipment Interfaces - All Metrodata Products

Wireless Manufacturers Tests

Our Wireless Equipment has been tested with these Manufacturer's Wireless Systems