User's Manual

6) DC power supply for the Hub Transceiver electronics
7) Uninterruptible Power Supply system (UPS) to protect all the equipment
The ISP’s Internet access equipment is selected and configured according to the requirements
of the particular ISP and the backhaul transmission equipment between the base station and the
ISP’s facilities.
The installer must provide an AC/DC power supply with sufficient capacity to operate the
outdoor Hub Transceiver. An Uninterruptible Power Supply (UPS) is strongly recommended to
protect system operation during short outages, as well as to provide isolation between incoming
power line anomalies and all of the base station equipment. See the Base Station Installation
Details section of this manual.
1.2.1 Hub Transceiver
Industry standard interfaces are employed between the various elements of the Hub system.
Note that specific manufacturer and part numbers are given in the Installation Details section of
this manual.
Transmit and receive signal interfaces:
• Upstream signal frequency 6.4 through 32 MHz.
• Downstream signal frequency 477 through 577 MHz.
1.2.2 Wireless CMTS
• Network connection 100baseT Ethernet with RJ-45 jack (female) connector.
• Upstream input signal frequency 6.4 through 32 MHz.
• Downstream output depends upon whether the Upconverter function is internal or
external to the W-CMTS.
a. If external, 44 MHz.
b. If internal, 477 through 577 MHz.
1.2.3 Upconverter
If Upconverter is external to the W-CMTS:
• Input signal frequency 44 MHz.
• Output signal frequency 477 through 577 MHz.
1.2.4 Amplifier
If the Upconverter is external, there may need to be an amplifier between it and the W-CMTS.
1.2.5 100 Mbps Ethernet Switch
• The Ethernet switch is the connection point for all TCP/IP data flow on the ARCell
Wireless System side of the Gateway (subnet).
• Subscriber traffic flows through the Gateway to the Internet via the switch, as does
network management traffic to and from the W-CMTS and the Internet.
• Other devices such as a laptop computer can be plugged into the switch.
1.2.6 Network Manager PC
The network manager PC provides three categories of services to the ARCell Wireless System.
June 2003 Page 1-5