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More About Fixed Wireless / Microwave Products

Licensed & Unlicensed Operating Equipment

VoIPRoute Products is a provider of licensed and unlicensed equipment operating in the 2.4 GHz - 38 GHz spectrum. Our Microwave solutions utilize equipment from Digital Microwave Corporation (DMC), Stratex Networks, Ceragon, P-COM, and more.

Radio Platforms - Supply and Support

High frequency PDH digital radios at 7, 8, 11, 13, 15, 18, 23, 26, and 38 GHz
Internal data rates of 2 E1 to 32 E1 or 2 E3
Full 100 Mbps Fast Ethernet version
Applications, including PCS/PCN cellular networks, wireless local loop, last mile network access, internet access, LMDS backhaul 

Technology


Fixed wireless technologies, especially point-to-point microwave connections have a long history in the backhaul networks of phone companies, cable TV companies, utilities and government agencies. More recently though, technology has advanced to enable higher frequencies and smaller antennas, resulting in lower cost systems that could be sold by carriers for last mile of communications.

Applications


Microwave - Microwaves are very short waves in the upper range of the radio spectrum used mostly for point-to-point communications systems. Initially these systems used radio spectrum in the 1 GHz range, but improvements in technology has enabled commercial systems to transmit in the 40 GHz region. The FCC (Federal Communications Commission) recently adopted rules allowing the use of spectrum above 40 GHz. (Some of the applications below are included in the microwave category).

39GHz - This band (38.6GHz-40GHz) has been reserved for last mile communications and is used by Winstar and Advanced Radio Telecom to extend their fiber networks. They usually target business customers in areas where buildings do not have access to fiber. The companies place wireless hubs in a central area and then work to secure roof rights and install antennas, radios and interface equipment to connect to the hubs (line-of-site is required between hubs and antennas).

LMDS (Local multipoint distribution service) - This band (27.5GHz to 28.35 GHz, 29.1GHz to 29.25 GHz and 31GHz to 31.3 GHz) is being used for point-to-multipoint applications similar to the 39GHz band - Internet access and telephony. LMDS, though, only has a 3-mile coverage radius and uses TDMA (Time-Division Multiple Access) so that multiple customers can share the same radio channel.

MMDS (Multichannel multipoint distribution service) - This band, located at 2.5GHz, was initially used to distribute cable television service. Currently MMDS is being developed (mostly by MCI Worldcom) for residential Internet service - but installations have not been profitable and service delays have been widespread.

UNII (Unlicensed National Information Infrastructure) - Bands between 5.15GHz and 5.35GHz and from 5.725GHz to 5.825GHz have been reserved by the FCC for unlicensed use. Although the spectrum is not licensed, the FCC has outlined some requirements for providers to follow. For instance, power requirements are set in order to minimize interference between providers. Devices are also limited to wide-bandwidth, high- data-rate digital operations to ensure equipment manufacturers have the flexibility to design and manufacture a variety of broadband devices using different technologies and modulation techniques.