BreezeNET DS.11 Indoor Series AP-DS.11 Access Point PC-DS.11 PC Card PCI-DS.11 PCI Card User’s Manual March 2001 Cat No.
Front Matter © 2001 by BreezeCOM Ltd. All rights reserved. No part of this publication may be reproduced in any material form without the written permission of the copyright owner. Trade Names BreezeNET, BreezeLINK, BreezeACCESS, BreezeVIEW and BreezeMANAGE are trade names of BreezeCOM Ltd. Other brand and product names are registered trademarks or trademarks of their respective companies. Statement of Conditions The information contained in this manual is subject to change without notice. BreezeCOM Ltd.
specifications for the product, or improper site preparation or maintenance. No other warranty is expressed or implied. The Company specifically disclaims the implied warranties of merchantability and fitness for any particular purpose. Electronic Emission Notices 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. 2.
Table of Contents authority to operate the equipment and the company’s warranty. Contacting BreezeCOM Technical Support Should you need assistance beyond the scope of this guide, please contact your local BreezeCOM reseller or distributor. If they cannot solve your problem, feel free to contact the BreezeCOM Technical Support Department. The support representatives can assist you in solving any problems that cannot be solved by your reseller.
TABLE OF CONTENTS 1.0 INTRODUCTION ............................................................................................ 9 1.1 AP-DS.11 Access Point................................................................................................9 1.2 PC-DS.11 PC Card .....................................................................................................10 1.3 PCI-DS.11 PC Card Adapter ......................................................................................10 1.
Table of Contents 4.0 Appendix A: Specifications ............................................................................ 61 4.1 AP-DS.11 Technical Specifications ...........................................................................61 4.2 PC-DS.11 Technical Specifications............................................................................63 5.0 Appendix B: Glossary.....................................................................................
INTRODUCTION 1.0 INTRODUCTION 1.1 AP-DS.11 Access Point The BreezeNET AP-DS.11 Access Point is an IEEE 802.11b compliant wireless hub that provides wireless workstations access to wired Ethernet LANs. It also contains the wireless relaying functions that enable workstations equipped with a 802.11b compatible wireless adapters, such as BreezeCOM’s PC-DS.11, to communicate with one another.
The AP-DS.11 contains an embedded SNMP agent, enabling effective management by the SNMP Configuration Utility or any standard SNMP management station. It can also be managed via its USB connector using the USB Configuration Utility. 1.2 PC-DS.11 PC Card The PC-DS.11 is an IEEE 802.11b compliant PC card that can be installed in any type II or III PC card slot. The PC card provides continuous connectivity and complete mobility, allowing seamless roaming throughout the wireless LAN coverage area.
INTRODUCTION 1.4 Network Configurations 1.4.1 Ad-Hoc Wireless LAN Notebook with PC -D S.11 D esktop PC with PCI-DS.11 Ad Ho c W ireless LAN Notebook with PC-DS.11 Desktop PC with PCI-DS.11 Figure 1: Ad-Hoc Wireless LAN An Ad-Hoc wireless LAN is a group of PC-DS.11/PCI-DS.11 equipped computers, connected as an independent wireless LAN. An Ad-Hoc LAN requires no Access Point. Rather, the PC-DS.11/PCI-DS.11 cards communicate directly with one another.
An Ad-Hoc wireless LAN is appropriate for very small-scale or temporary wireless LANs. 1.4.2 Infrastructure Wireless LAN Desktop PC with ethernet card Desktop PC with ethernet card Server Ethernet Infrastructure Wired LAN Notebook with PC-DS.11 Notebook with PC-DS.11 AP-DS.11 Notebook with PC-DS.11 AP-DS.11 Desktop PC with PCI-DS.11 Desktop PC with PCI-DS.11 Desktop PC with PCI-DS.
INTRODUCTION functions that enable PC-DS.11/PCI-DS.11 equipped workstations to communicate. An integrated wireless and wired LAN is called an Infrastructure configuration. A group of wireless LAN adapters (such as PC-DS.11/PCI-DS.11 cards) and an AP-DS.11 Access Point make up a Basic Service Set (BSS). Each device equipped with a PC-DS.11/PCI-DS.11 card in the BSS can communicate with any computer in the wired or wireless LAN infrastructure via the AP-DS.11 Access Point. An AP-DS.
The use of a unique ID in a BSS is essential. The AP-DS.11 and all PC-DS.11/PCI-DS.11 cards in a BSS must be configured with the same ESSID. The Infrastructure wireless LAN configuration is appropriate for enterprise-scale wireless networks where users require access to resources such as central databases, file servers etc. and is necessary when roaming over a wireless LAN campus. 1.4.3 Roaming Infrastructure configuration supports roaming capabilities.
INTRODUCTION Ethernet Infrastructure Wired LAN AP-DS.11 Roaming from BSS #1 to John's Notebook BSS #2 with PC-DS.11 BSS #1 AP-DS.11 John's Notebook with PC-DS.11 BSS #2 Extended Service Set (ESS) Figure 4: Roaming in an Extended Service Set (ESS) Before enabling an ESS with roaming capability, select a feasible radio channel and optimal Access Point positioning. Proper Access Point positioning combined with a clear radio signal will greatly enhance performance. User's Manual 15 BreezeNET DS.
AP-DS.11 2.0 AP-DS.11 2.1 Basic Installation 2.1.1 Packing List The AP-DS.11 product kit includes the following items. If any of the listed items are missing, please contact your local dealer. • AP-DS.11 • AP-DS.11 USB driver and Configuration Utilities CD • AC Power Adapter • USB cable Open the package carefully and make sure that none of the items listed above are missing. Do not discard any packing materials.
2.1.2.1 Central Location Install the Access Point in a central location in the intended coverage area. Good positions are: • In the center of a large room • In the center of a corridor • At the intersection of two corridors 2.1.2.2 Height Install the Access Point as high as possible, clear of high partitions or tall pieces of furniture in the coverage area. 2.1.2.3 Metal Furniture Position the Access Point clear of metal furniture and away from any moving objects such as metal fans or doors.
AP-DS.11 2.1.2.6 Antennas Make sure that the antennas are extended upward (or downward) vertically in relation to the floor. 2.1.3 Connecting the Access Point to the Power Supply The AP-DS.11 operates on a power input of 5V DC supplied by the power transformer included with the unit. • Connect the power transformer’s DC cable to the POWER +5V power socket on the unit. Use ONLY the power transformer supplied with the AP-DS.11.
2.2 Configuring the AP-DS.11 The AP-DS.11 can be configured using one of the two configuration utilities provided with the unit: a) The USB Configuration Utility, running under Windows 98/2000/ME, connecting to the Access Point via the USB port. b) The SNMP Configuration Utility, running under Windows 98/2000/ME/NT, connecting to the Access Point from anywhere in the network via either the Ethernet or the wireless LAN. NOTE: The USB configuration utility can be used with Windows 98/2000/ME only.
AP-DS.11 the necessary driver. Click Next to begin the installation. 4. Select Search for the best driver…., and then click Next. 5. Select Specify a location and then click Browse. From the drop-down list, double-click the D: \AP-DS.11 USB Driver (where D is the CD-ROM drive) folder icon and Windows 98/2000/ME automatically enters the path. Click Next to continue. 6. Windows 98/2000/ME indicates when it has found the appropriate driver. Click Next to continue. 7.
Figure 5: Windows System Properties dialog box 2.2.1.2 USB Configuration Utility Installation To install the USB Configuration Utility: 1. Select Run from the Start menu. 2. Open the drop down list and select D:\AP-DS.11 USB CONFIG UTIL\setup.exe (where D is the CD-ROM drive) or click the Browse button to search for the file. Click OK when the correct file has been selected. 3. Click Next and continue the installation according to the on-screen instructions. BreezeNET DS.
AP-DS.11 4. Select Browse and when the appropriate file is selected, click Next. 5. Setup adds an icon to the program folder. Click Next 6. After the installation of the utility is completed, click Finish. 2.2.1.3 Configuring the AP-DS.11 Using the USB Configuration Utility To configure the AP-DS.11 using the USB Configuration Utility: 1. Click Start and then select Programs – BreezeNET DS. 11 and click the AP-DS.11 USB Configuration Utility icon. The BreezeNET AP-DS.
Figure 6: USB Configuration Utility – Status • Click the Reconnect Button to re-connect to the associated AP and refresh the parameters. • Click the Basic Setting, Advanced, IP Setting and Security tabs to modify other settings. • After you change any settings, click the Apply button. • Click the Restore Defaults button on the Status tab to restore the default values of all the tabs. 3. The Basic Setting tab allows you to change the settings of the ESSID and Channel parameters.
AP-DS.11 • The ESSID is a string of up to 31 case-sensitive hexadecimal characters. The default is BreezeNET. • Valid Channel values are 1 – 13. The default is Channel 6.
Figure 9: USB Configuration Utility - Advanced • Fragmentation Threshold can be set from 60 to 2346. The default value is the maximum, 2346. The maximum value disables the feature (no fragmentation). • RTS Threshold can be from 60 to 2346. The default value is the maximum, 2346. The maximum value disables the RTS/CTS mechanism. • Authentication Type can be Open System (no authentication), Shared Key (requiring a key) or Both (for a cell where not all stations use Shared Key authentication).
AP-DS.11 NOTE: This parameter should only be changed by an experienced user. It may be set to Short Preamble only if all the wireless stations served by the AP also support Short Preamble. • The Basic Rate parameter is used to define the maximum transmission rate of the broadcasts and control packets. Available selections are 1-2 Mbps and 1-2-5.5-11 Mbps. In addition, you may enable/disable the data transmission Auto Rate Fall Back option.
Figure 10: USB Configuration Utility - IP Setting • The Default IP Address is 192.168.1.1. This address can be also used to initially configure the unit using the SNMP configuration utility. • Default IP Mask is 255.255.255.0. 6. The Security tab allows you to change the WEP settings, enter 4 key strings and define the default key to be used for encrypting/decrypting messages. You may use a Passphrase to generate the keys. BreezeNET DS.
AP-DS.11 Figure 11: USB Configuration Utility - Security • WEP options are Enable and Disable. The default is Disable. • Passphrase is a string of up to 10 characters. No default is entered. • WEP Key 1 through Key 4 are strings of 10 hexadecimal characters divided into 5 sets of two characters each. • Default Key is for the selection of the active key (Key 1 through Key 4). The default is Key 1. 7.
2.2.2 SNMP Configuration Utility The SNMP Configuration Utility allows remote configuration of the AP-DS.11 from the network via either the Ethernet port or the wireless LAN. 2.2.2.1 SNMP Configuration Utility Installation To install the SNMP Configuration Utility: 1. Select Run from the Start menu. 2. Open the drop down list and select D:\AP-DS.11 SNMP CONFIG UTIL\setup.exe (where D is the CD-ROM drive) or click the Browse button to search for the file. 3. Click OK to start the setup application. 4.
AP-DS.11 2. Select AP-DS.11 SNMP Configuration Utility. 3. You will be prompted to type in the IP Address of the AP. The IP address of the AP must be in the same subnet as the computer on which you are running the Configuration Utility. NOTE: The default IP Address is 192.168.1.1. The BreezeCOM AP-DS.11 SNMP Configuration Utility dialog box appears open to the Status tab. The Status tab shows the main parameters of the currently connected AP.
• Click the Find AP button to open the Available Access Points dialog box, listing all possible APs. Select an AP to associate with and click Connect. Figure 13: Available Access Points dialog box • Click the Reconnect button to reconnect the AP and re-read the parameters. • Click the Restore Defaults button to restore the default values. After you change any settings, click the Apply button. • Click the Reset button to reset the Access Point. 4.
AP-DS.11 Figure 14: SNMP Configuration Utility - Basic Setting • The ESSID is a string of up to 31 printable characters, case sensitive. The default is BreezeNET. • Valid Channel values are 1 – 13. The default is Channel 6. For a list of frequencies see Regulatory Channel Frequencies on page 25. 5. The Advanced tab allows you to change the Fragmentation Threshold, RTS Threshold, Authentication Type, Preamble Type and Basic Rate parameters. User's Manual 33 BreezeNET DS.
Figure 15: SNMP Configuration Utility - Advanced • Fragmentation Threshold can be from 60 to 2346. The default value is the maximum, 2346. The maximum value disables the feature (no fragmentation). • RTS Threshold can be from 60 to 2346. The default value is the maximum, 2346. The maximum value disables the RTS/CTS mechanism. • Authentication Type can be Open System (no authentication), Shared Key (requiring a key) or Both (to support a cell in which not all stations use Shared Key authentication).
AP-DS.11 NOTE: This parameter should only be changed by an experienced user. It may be set to Short Preamble only if all the wireless stations served by the AP also support Short Preamble. • The Basic Rate parameter is used to define the maximum transmission rate of the broadcasts and control packets. Available selections are 1-2 Mbps and 102-5.5-11 Mbps. In addition, you may enable/disable the Auto Rate Fall Back option.
• Default IP Address is 192.168.1.1. This address can also be used to initially configure the Access Point using the SNMP Configuration Utility • Default IP Mask is 255.255.255.0. 7. The Security window allows you to change the WEP settings, enter 4 key strings and define the default key to be used for encrypting/decrypting messages. You may use a Passphrase to generate the keys. Figure 17: SNMP Configuration Utility - Security • WEP options are Enable and Disable. The default is Disable.
AP-DS.11 • Default Key is for the selection of the active key (Key 1 through Key 4). The default is Key 1. 8. The Info window lists the Version Number of this installation as well as providing a button to access the BreezeCOM website. Figure 18: SNMP Configuration Utility – Info • Clicking the Stations button opens the Associated Stations dialog box that lists those stations associated with the network. User's Manual 37 BreezeNET DS.
Figure 19: Associated Stations dialog box • Clicking the Statistics button opens the Statistics message box, detailing Wireless and Ethernet statistics for the network. Figure 20: Statistics message box BreezeNET DS.
AP-DS.11 • Clicking the TrapLog button opens a list of all traps (messages) that have been received from other devices on the network. 2.3 Verifying Proper Operation of the AP When operating correctly, the following LEDs are lit on the front panel of the Access Point. • Power: Steady green when the unit is on. • Ethernet: Steady green when the unit is connected to an Ethernet connection. • WLAN Active: Flashes green to indicate the intensity of network activity. User's Manual 39 BreezeNET DS.
PC-DS.11 & PCI-DS.11 3.0 PC-DS.11 AND PCI-DS.11 3.1 PC-DS.11 Technical Information 3.1.1 PC-DS.11 System Requirements To install and use the PC-DS.11 PC card, your PC system must meet the following requirements: • A Type II or Type III PC card slot. • PC card revision 2.10 compliant card and socket services. • Windows 95, 98, 2000 or NT (with the Windows Installation CD for use during installation). • 3.1.2 500 Kbytes free disk space for utility and driver installation. Inserting the PC-DS.
Figure 21: Inserting the PC-DS.11 into Notebook After properly inserting the PC-DS.11 card into your notebook, continue with the PC-DS.11 driver and Configuration Utility installation. NOTE: It is possible to “hot swap” the PC card. You may insert or remove the PC-DS.11 PC card from the slot whether your computer is switched on or off. Windows requires that the Network card and socket services must be compliant with the PC card revision 2.10 specification.
PC-DS.11 & PCI-DS.11 3.2 PCI-DS.11 Technical Information 3.2.1 PCI-DS.11 System Requirements To install and use the PCI-DS.11 PCI card, your PC system must meet the following requirements: • A free PCI slot. • Windows 95, 98, 2000 or NT (with the Windows CD for use during installation). • 3.2.2 500 Kbytes free disk space for utility and driver installation. Inserting the PCI-DS.11 PC Card Open the desktop PC and insert the PCI-DS.11 in an available PCI slot.
Windows Millennium (ME) operating systems. Operating system variations are outlined in the instructions. NOTE: Before proceeding, have your Windows CD ready, as it may be required during the software installation process. 1. Physically install the PC-DS.11 or the PCI-DS.11. The operating system automatically detects the card and prompts you to install the necessary driver. 2. Insert the driver diskette and specify the driver location according to the operating system. 3.
PC-DS.11 & PCI-DS.11 3.4 Configuring the PC-DS.11 using the Driver 1. From the Control Panel, double-click the Network icon. 2. Select BreezeNET PC-DS.11 from the list and click the Properties button. Figure 22: Windows Network Configuration dialog box 3. From the Properties menu, select the Advanced tab. User's Manual 45 BreezeNET DS.
Figure 23: BreezeNET Configuration – Channel 9. Select Authentication Algorithm from the Property list. The options shown in the value list are Open System or Shared Key. The default value is Open System. 10. Select Channel from the Property list, and choose a value from the drop-down list. FCC regulations require a value between 1 and 11 and ETSI requires a value between 1 and 13. The default is Channel 6. For a list of frequencies see Regulatory Channel Frequencies on page 25.
PC-DS.11 & PCI-DS.11 11. Select Fragmentation Threshold from the Property list. The default value is 2432. 12. Select Network Type from the Property list, and choose Infrastructure, Ad-Hoc, or 802.11b Ad-Hoc from the drop-down list. NOTE: Infrastructure mode allows a wireless adapter to communicate with a network using the AP-DS.11, while Ad-Hoc and 802.11b Ad-Hoc mode allow wireless-to-wireless communication. Ad-Hoc mode allows peer-to-peer communication with similar wireless LAN products. The 802.
16. Select ESSID from the Property list, and type in a value in the field. The ESSID can have any value up to 31 hexadecimal characters, and should have the same value as the Access Point (AP) in Infrastructure mode. In Ad-Hoc mode, all clients should share the same ESSID. 17. Select Use Wep from the Property list, and choose 128 bit, 64 bit or Disabled from the drop-down list. The WEP settings must match those of the Access Point. NOTE: To use WEP in a network based on the BreezeNET AP-DS.
PC-DS.11 & PCI-DS.11 6. Select BreezeNET PC-DS.11 and click OK. Figure 24: Windows Select OEM Option dialog box 7. Windows NT 4.0 displays a configuration dialog box. Figure 25: Windows NT Configuration dialog box User's Manual 49 BreezeNET DS.
8. Set the I/O Base and IRQ Level. These settings should be unique and not conflict with any other device. If needed, they can be changed in order to avoid possible conflicts with other system devices. 9. Set the network type in the Mode field. Infrastructure Station mode allows a wireless adapter to communicate with a network using the AP-DS.11, while Ad-Hoc and 802.11b Ad-Hoc mode allow wireless-to-wireless communication. Ad-Hoc mode allows peer-to-peer communication with similar wireless LAN products.
PC-DS.11 & PCI-DS.11 The default value is Disabled. 15. Select the power mode in the Power Saving field. To allow uninterrupted data communication, choose Disabled as the value (selected by default). Choosing Enabled allows your notebook to enter “sleep” mode, however, this may interrupt data communication. Consult your System Administrator to find out the best setting for your network type. 16. Set the WEP in the WEP field, choosing 128-bit, 64-bit or Disabled.
3.6 Installing and Operating the Configuration Utility 3.6.1 Installing the Configuration Utility 1. Insert the Configuration Utility diskette into the diskette drive. Run A:\setup.exe (where A represents the diskette drive). 2. The wizard opens. 3. Click Next. 4. Click Browse to change the install folder. Click Next. 5. Change the program folder. Click Next. The system will install the files in the appropriate location. After the installation is complete, the system displays a windows dialog.
PC-DS.11 & PCI-DS.11 NOTE: The utility icon will not appear if there is no properly installed PC/PCI card in the computer The Configuration Utility: Double-clicking the Quick Launch utility icon opens the Configuration Utility main menu, providing quick access to all settings. The following image shows the Configuration Utility with the About tab selected, where you will find Version, Copyright and Manufacturer information.
Link Info: The Link Info menu provides information about the current link quality between the PC card and the base station, in addition to the Channel and the Tx Rate. Click Rescan to reestablish a connection with the AP. Figure 27: BreezeNET Configuration Utility - Link Info BreezeNET DS.
PC-DS.11 & PCI-DS.11 Configuration: Selecting this tab opens the Configuration menu. Here you will find options for configuring your PC card. Figure 28: BreezeNET Configuration Utility - Configuration Description of Configuration Settings Following is an explanation of each adapter setting presented by the Configuration menu. • Mode: The Mode setting determines the architecture of your wireless LAN. Choose Ad-Hoc or Infrastructure mode depending on your network type.
resources between wireless clients without a wireless Access Point (AP) and are best suited for small or temporary networks. Infrastructure: This mode allows a wireless LAN to be integrated into an existing wired network through an AP. Infrastructure type networks also permit roaming between Access Points while maintaining connection to all network resources. Infrastructure mode provides additional features, such as WEP security, power saving and extended range.
PC-DS.11 & PCI-DS.11 OK and wait a few seconds. The screen is then updated to show the current Connection Status, Link Quality and Signal Strength. • Channel: This setting specifies the default 802.11b channel used by the Wireless LAN. In an Infrastructure type network without an Access Point active on the default channel, clients will scan through all available channels searching for a network with a matching ESSID. Changing the Channel: Changing the channel is only effective in Ad-Hoc networks.
Figure 29: BreezeNET Configuration Utility - Encryption The 64-bit or 128-bit WEP keys can be generated from a user-defined password (consisting of any text string) or a manual entry. To generate encryption keys for each client communicating in the wireless network, complete the following steps: For 64-bit encryption: a. Select Create with Passphrase and type a case sensitive passphrase in the field. This passphrase must be the same for all APs and workstations in the ESS.
PC-DS.11 & PCI-DS.11 keys. Select the key to be used as the default from the Default Tx Key field and click Apply. For 128-bit encryption: a. Select Create with Passphrase and type a case sensitive passphrase in the field and click Apply. This passphrase must be the same for all APs and workstations in the ESS. OR b. Select Manual Entry, and complete the 13, two hexadecimal fields and click Apply. 3.7 Verifying Proper Operation of the PC-DS.
• Reinstall the driver. Problem: The PC-DS.11 station cannot communicate with other computers linked via Ethernet in the Infrastructure configuration. Probable Solution: 1. Ensure that the PC-DS.11 with which the station is associated is powered on and verify the link quality. 2. Confirm the station is configured with the same operating radio channel as the PC-DS.11. If the IDs are different, change the PC-DS.11 and all the stations within the BSS to another radio channel. 3.
TECHNICAL SPECIFICATIONS 4.0 APPENDIX A: SPECIFICATIONS 4.1 AP-DS.11 Technical Specifications Radio Wireless LAN Standards Compliant with IEEE 802.11b HR Radio Type Direct Sequence Spread Spectrum Supported Data Rates 11, 5.5, 2,1 Mbps with Dynamic rate switching 2.400 - 2.4835 GHz ISM band – ETSI Frequency Range 2.400 - 2.4835 GHz ISM band – FCC 2.400 - 2.4835 GHz – Japan 2.4465 GHz – 2.
360ft (120m) open environment Typical Range at 11Mbps 100ft (30m) office environment Security Authentication and Data Encryption 64 bit RC4 WEP Configuration and Management Enhanced in-band SNMP based graphic Management and Setup Configuration utility Enhanced out-of-band USB interface graphic Configuration utility LED Indicators Power, Ethernet connection, Wireless LAN Activity Power Power Voltage Power Consumption DC 5.0 Volt, AC Adapter AC 100V-240V 1.
TECHNICAL SPECIFICATIONS 4.2 PC-DS.11 Technical Specifications Radio Wireless LAN Standards Compliant with IEEE 802.11b HR Radio Type Direct Sequence Spread Spectrum Supported Data Rates 11, 5.5, 2,1 Mbps with Dynamic rate switching 2.400 - 2.4835 GHz ISM band – ETSI Frequency Range 2.400 - 2.4835 GHz ISM band – FCC 2.400 - 2.4835 GHz – Japan 2.4465 GHz – 2.
Typical Range at 11Mbps 360ft (120m) open environment 100ft (30m) office environment Security Authentication and Data Encryption 64 bit RC4 WEP 128 bit RC4 WEP Software Drivers Supported Operating Systems Windows 2000, 98, 95, NT, Linux Configuration and Management Management and Setup Enhanced graphic configuration utility Site Survey Tool Integrated into the configuration utility LED Indicators Wireless Link, Wireless LAN Activity Power Consumption Transmit 300mA typical (500mA max) Receive
GLOSSARY 5.0 APPENDIX B: GLOSSARY Access Point An Access Point is a wireless hub that provides wireless workstations access to wired Ethernet LANs. It also contains the wireless relaying functions that enable workstations equipped with a wireless adapter to communicate with one another. Ad-Hoc A group of 2 or more wireless workstations that communicate directly with one another without the need for a central AP (peer-to-peer).
Infrastructure An integrated wireless and wired LAN is called an Infrastructure configuration. Preamble Type A sequence of bits transmitted at 1Mbps that allows the PHY circuitry to reach steady-state demodulation and synchronization of bit clock and frame start. Two different preambles and headers are defined: the mandatory supported Long Preamble and header, which interoperates with the 1 Mbit/s and 2 Mbit/s DSSS specification (as described in IEEE Std 802.
