User's Manual

Summit Manufacturing Utility (SMU) Guide 05/13/09
Summit Data Communications, Inc.
5 CONFIDENTIAL
SCU Main window with Import/Export button Import/Export dialog box
2.2.3 Regulatory Domain
A Summit radio’s regulatory domain determines the radio’s maximum transmit power and the frequency
channels available to the radio. Summit radios are certified for operation in three regulatory domains:
• FCC, which is governed by the Federal Communications Commission, the regulatory agency and
standards body for the Americas and parts of Asia
• ETSI, which is governed by the European Telecommunications Standards Institute, the standards
body applicable to most of Europe, Africa, the Middle East and parts of Asia
• TELEC, which is governed by the Telecom Engineering Center, the standards body for Japan
A Summit radio can be programmed for any one of these three domains. Alternatively, a Summit radio
can be programmed for a Worldwide domain, which enables the radio to be used in any domain.
“Worldwide” value is the default value for the setting.
An 802.11g radio, which supports both 802.11b and 802.11g, operates in the 2.4 GHz frequency
spectrum, where up to 14 channels, numbered 1 to 14, are defined. Adjacent channels overlap. In fact,
there must be five channels of separation to avoid overlap and co-channel interference. As an example,
channels 1, 6, and 11 are non-overlapping.
An 802.11a/g radio operates in both the 2.4 GHz spectrum for 802.11b and 802.11g and the 5 GHz
spectrum for 802.11a. The 5 GHz frequency spectrum is grouped into sets of channels, or bands:
• UNII-1: 36, 40, 44, 48
• UNII-2: 52, 56, 60, 64
• Intermediate: 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
• UNII-3: 149, 153, 157, 161
None of the channels in the 5 GHz bands overlap. Dynamic Frequency Selection, or DFS, is required for
the UNII-2 and Intermediate bands. With V2.01 of Summit software, a Summit AG radio programmed
for the FCC regulatory domain does not support DFS or the bands that require DFS.