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To: Daniel G. DeBusschere who wrote (1594)	7/19/1998 3:59:00 PM
From: Dan S.	Read Replies (2) \| Respond to of 12823

My love and fascination of wireless resulted in me pursuing a career in it. Bandwidth is a good point. Take our system for example. We operate an MMDS system in the 2.5 GHz range. With our spectrum, we can provide telephone service, digital cable TV programming and high speed Internet access to 50,000 - 100,000 subscribers within a 50 mile radius of our transmission tower. This depends on what type of sectorization technology we employ to do so. This is plenty of bandwidth. LMDS technology has about 5 times the spectrum that we have, but can only operate within 3-6 miles of each transmission site. In answer to your questions... YES, we have plenty of bandwidth. :)

To: Daniel G. DeBusschere who wrote (1594)	7/19/1998 5:33:00 PM
From: Bernard Levy	Respond to of 12823

Daniel: Fixed broadband wireless at 24GHz (TGNT), 28GHz (LMDS operators) and 38GHZ (WCII) has actually at least as much bandwidth as cable, with far less deployment infrastructure costs than cable. For example, the A and B LMDS blocks combined have 1.3GHz of bandwidth. At approximately 2 bits/Hz/sec (assuming QPSK transmission), this gives LMDS operators approximately 2.5 Gb/sec per cell (approximately 2km in radius). And I am not even discussing the possibility of antenna sectorization, which could multiply this aggregate amount by a factor of 3 or 4 easily! Note that like cable, it is a shared medium, so that all users in a cell have to share this BW, but even if we assume 500 users per cell at any given time, they would have several Mb/sec each. Dynamic BW allocation is also possible with wireless ATM. Note that unlike MMDS, whose frequency reuse factor is similar to PCS (between 4 and 7) LMDS frequencies have a reuse factor of one. Satellites in the Ka band (Teledesic, etc...) will have about the same competitive advantages as terrestrial wireless operators. So cable will have plenty of competition, and may not come out on top, particularly for business users. Best regards, Bernard Levy

To: Daniel G. DeBusschere who wrote (1594)	7/19/1998 5:41:00 PM
From: DubM	Respond to of 12823

Daniel, thought you may be interested in the following news article. As you can see, they are getting 155 Mbps from a single 100 mhz channel. Due to the tight beam characteristics of 38 Ghz, spectrum reuse is a big plus. Disclaimer-I am long WCII. Regards, Dub ( BW)(WINSTAR-COMMUNICATIONS)(WCII) WinStar Initiates First Fully Integrated Fixed Wireless Multipoint Metropolitan Area Network ÿÿÿÿBusiness Editors ÿÿÿÿNEW YORK--(BUSINESS WIRE)--APRIL 13, 1998 ÿÿÿÿMulti-Hub/ATM-Based Configuration Demonstrates Increased ÿÿÿÿFunctionality and Efficiency of Point-to-Multipoint Architecture ÿÿÿÿWINSTAR COMMUNICATIONS, INC. (NASDAQ WCII) announced today that it has activated a full-duplex, ATM-based, point-to-multipoint (PMP) broadband, fixed wireless trial network carrying voice, data and video services in Washington, D.C. ÿÿÿÿThe network incorporates two hub sites, expanding to three shortly, and is providing high speed telecommunications services over multiple sectors to four end-user buildings. Traffic is being routed through an ATM over-the-air interface and integrated with WinStar's ATM metropolitan area backbone network and its Class 5 local switched network. The PMP network is functioning at an extremely high level of efficiency and reliability. ÿÿÿÿWilliam J. Rouhana, Jr., Chairman and Chief Executive Officer of WinStar, said that "the network confirms the breadth and depth of the role WinStar's Wireless FiberSM broadband local networks will play in bringing voice, data and video services to the market. We believe this is the first time these capabilities have been integrated into an actual commercial enterprise environment. The results of our deployment firmly establish WinStar's technical leadership in this arena." ÿÿÿÿWinStar's Washington D.C. network is demonstrating all the features of a fully networked PMP infrastructure, including bi-directional communications on a bandwidth-on-demand basis. The network offers unprecedented versatility, including enhanced voice, data, video conferencing, LAN-LAN interconnections, file transfer, MPEG-2 video, distance learning, email and high speed internet access. The network will provide multiple channels to each end user building, and each channel will provide data rates of up to 155 megabits per second. This network design greatly increases the efficiency with which WinStar utilizes its spectrum. ÿÿÿÿ"Our PMP network carries with it very significant reductions in capital costs enabling WinStar to extend our network to many more customers, expanding our addressable market to include those customers located in buildings as small as 20,000 square feet, and some portion of the residential market. The combination of the reduced cost and the relative ease of installation will allow the integration of voice, data and video communications services onto one network allowing an affordable, high speed alternative to the higher cost, legacy systems of the existing monopoly carriers" said Rouhana. "This confirms our ability to initially deploy our multipoint network in the second half of 1998, and moves us toward full national implementation of this network over the course of 1999 and beyond." ÿÿÿÿWinStar Communications, Inc. is a national local communications company, serving business customers, long distance carriers, fiber-based competitive access providers, mobile communications companies, local telephone companies, and other customers with broadband local communications needs. The company provides its Wireless FiberSM services using its licenses in the 38 GHz spectrum. The company also provides long distance, Internet and information services. ÿÿÿÿWinStar is a registered trademark and Wireless Fiber is a service mark of WinStar Communications, Inc.