Trango Broadband Access5830 - Manual (Page 5)

Introduction
Trango Broadband Wireless — Access5830 User Manual Rev. F page 1
Section 2 Introduction
Your Trango Broadband Access5830 radio system provides a reliable and robust means to deliver broadband access to a
wide geographic region through wireless Ethernet connectivity. This section will familiarize you with basic operational
concepts, as well as an overview of the various components and hardware of the Access5830 system.
Overview
The dual-band Access5830 is a highly versatile and cost effective outdoor point-to-multipoint solution for wireless
broadband service providers and enterprise connectivity applications. The Access5830 delivers 10 Mbps over the
air, and operates in either the 5.8 GHz ISM band or the 5.3 GHz U-NII band. Software switchable dual polarized
antennas, coupled with two bands of frequency operation, allow a total of 22 non-overlapping channel/polarization
combinations.
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Note: In this document, and within the radio configuration itself, the designators of “ISM” (5725-5850 MHz) and
“UNII” (5250-5350 MHz) are used to distinguish between the two bands.
The Access5830 system is classified as a Layer 2 multi-point bridge. Authentication of the SUs is performed using
a secure, proprietary method at the MAC level, and thus all forms of Ethernet traffic and unlimited IP addresses
will pass seamlessly over the system.
There is no limitation on the number of IP addresses or hardware devices that an
individual SU may have physically connected to it.
Both APs and SUs can be easily configured and managed through built in serial and Ethernet interfaces. A web
browser can be used for quick set up and deployment. The Access5830 radios are powered using "power-over-
Ethernet" for ease and low-cost installation. Both APs and SUs feature a handy "site survey" tool to check for
interference.
The Access5830 system consists of two types of radios: Access Points (AP) and Subscriber Units (SU). The AP unit acts
as a hub in a star configuration wireless multipoint network supporting up to 512 subscriber units. The AP delivers
wireless broadband service (Ethernet connectivity) to one or more SUs according to a proprietary adaptive dynamic
polling algorithm called SMARTPolling™. Network operators can co-locate multiple APs (up to 22) at a single cell site,
thus increasing the aggregate throughput available at each wireless point of presence (POP).
Figure 2-1: Typical Point-to-Multipoint Deployment
The Access5830 AP provides a host of comprehensive tools and functions. The AP typically resides at the center of the
point-to-multipoint (PMP) network, and performs all management functions including the allocation of bandwidth for all
associated SUs.
SmartPolling™ Overview
One of the major advantages of the Access5830 system is the ability of the AP to handle multiple SU
connections, and share the 10 Mbps data throughput very efficiently. Bandwidth allocation is managed by the
AP’s SmartPolling™ algorithm according to provisioning rules set up by the system administrator. The AP
polls each SU in a round robin format to determine if the SU has data to transfer. The SU only transmits the