User's Manual

• Firmware residence and configuration utilities for the W-CMTS Base Station and
Wireless cable modems.
• TCP/IP services such as DHCP, TFTP and time server
• SNMP network manager and W-CMTS- and WCM-specific interfaces.
1.2.7 Gateway
This equipment provides functions required to interface the wireless network to the backhaul
transmission facility to the ISP. The ISP will normally specify and configure this equipment. It
interconnects with the ARCell Wireless System via a standard port on the 100 Mbps Ethernet
switch.
The ARCell Wireless System is simply a standalone IP network that requires the presence of a
gateway through which packets are routed between the wireless network and the Internet. The
network interface on the ARCell side of the gateway must be Ethernet 100baseT. The gateway
itself is typically one of two types depending on the network IP address:
• If the network IP address is registered with its country’s Network Information Center then
the gateway may be a conventional router.
• If the network IP address is one of the RFC1597 private addresses the gateway must be
a proxy server of some sort. For example, the gateway may provide RFC1631 Network
Address Translation (NAT) services.
The ISP may use additional security measures, such as firewalls.
1.2.8 DC Power Supply
The DC power supply is located in the equipment room and supplies DC power to operate all of
the Hub Transceivers in the installation. In a single sector Hub Transceiver configuration a
single power cable is run along with the signal cables from the Hub Transceiver to the base
station equipment room.
In a multi-sector Hub Transceiver configuration separate power cables can be run to the
equipment room from each Hub Transceiver, or an Outdoor Junction Box (OJB) can be installed
in the vicinity of the Hub Transceivers (on the rooftop or tower structure) and a single
appropriately sized cable run to the equipment room. See the Hub Transceiver Installation
Details section of this manual for more information.
The electronics in the Hub Transceiver are designed to function with a DC voltage at the hub
nominally 8 – 8.5 VDC. See the Hub Transceiver Installation Details section of this manual for
more information on recommended power supplies.
1.3 Frequency Band of Operation
This system operates in the frequency band designated by the FCC as UNII and is governed by
Part 15, Subpart E, of the FCC Rules and Regulations (http://ftp.fcc.gov/oet/info/rules/). The
components that Arcwave sells comply with these Rules.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Briefly, the UNII rules are:
• Lower band is 5.15-5.35 GHz
o Transmitted power in the band 5.25 – 5.35 GHz cannot exceed 250 mW.
June 2003 Page 1-6