Posts Tagged ‘system’
Wireless Mic System
May 2nd, 2010Wireless Network VLANS – How to Implement Wireless VLANS
The wireless access points operate as bridges with no routing defined anywhere on the wireless network segment. All VLANs are defined on the wired switches and mapped with specific SSIDs at each access point. The maximum number of VLANs and SSIDs per access point that can be mapped is 16. The wireless client attaches or associates with a specific SSID which in turn will map client with membership in a specific VLAN.
There is an option to configure the maximum number of wireless client associations allowed per SSID improving network performance and availability. The access point is assigned a primary SSID with the 802.11 standard, advertising it with beacons on that segment to all wireless clients. There is a guest SSID defined that companies should define a VLAN policy for that group or with access control list security policies denying access to the corporate network. Guest traffic for the most part should be directed across the internet unless they have specific network rights.
VLAN membership of each wireless client is assigned considering what servers are most accessed, specific company department and security rights. Device types such as a scanner with less security won’t be assigned the same VLAN as an engineering group with sensitive information and 802.1x security.
VLAN 1 is the default native VLAN and doesn’t tag traffic. The native VLAN number assigned on the wired switches must match the VLAN assigned at all attached access points on that network segment. The native VLAN is sometimes assigned to network management traffic or the RADIUS server. Companies will implement access control lists at each network switch to filter traffic securing the management VLAN traffic. With most designs the native VLAN isn’t mapped to a SSID except with connecting root bridges and non root bridges. Define an infrastructure SSID for infrastructure devices such as a repeater or workgroup hub and map the native VLAN allowing those devices to associate with non root bridge and root bridges.
Wireless clients configured with 802.1x authentication will have a RADIUS server configured with mapped SSIDs per wireless client. This is called RADIUS SSID control. The server sends the list to the access point where the client is allowed to associate with an access point should they be a member of one or several SSIDs. RADIUS VLAN control assigns each client with a specific VLAN and default SSID. The mapping can be overridden with the RADIUS sever configuration. During authentication the wireless client is assigned to that specific VLAN. The employee however can’t be a member of any wired VLAN except that. Policy group filters or class map policies can be defined per VLAN. You should deny all infrastructure devices to be members of any non-infrastructure SSID. Wireless clients will see all broadcasts and multicasts of all mapped VLANs unless 802.1x per VLAN encryption is implemented with TKIP, MIC and broadcast keys.
Trunking is implemented to switch traffic between network segments that have multiple VLANs defined. Each VLAN defines a separate broadcast domain comprised of a group of employees with a company department. The trunk is a physical switch port interface with defined Ethernet subinterfaces configured with 802.1q or ISL encapsulation. Those packets are tagged with specific VLAN number before it is sent between access point and wired network switch. The access point Ethernet interface is configured as a hybrid trunk. Access control lists should be defined at the wired switch Ethernet interface that drops packets from VLANs not defined with any SSID.
VLAN 100 = 192.168.37.x – SSID = Engineers
VLAN 200 = 192.168.38.x – SSID = Guest
VLAN 300 = 192.168.39.x – SSID = Sales
Shaun Hummel is the author of Cisco Wireless Network Design Guide and has a web site focused on information technology job search solutions and online technical interviews.
http://www.networkjobsolutions.com
About the Author
Shaun Hummel, CCNP, is a Senior Network Engineer with 11 years experience in enterprise network planning, design, and implementation. He has worked for various private and public companies in Canada and the United States improving infrastructure, security, and management. He has written Network Planning and Design Guide, Cisco Wireless Network Design Guide and Network Assessment Guide.
www.networkjobsolutions.com
Wireless Microphone Antenna System for Weddings
Pro VHF Wireless Mic System $397.95
Professional conference Desktop VHF Wireless Microphone System Professional VHF 8 Channel Wireless System Eight Table Top Microphones Included Dual Telescoping Receiver Antennas Eight Volume Controls On/Off Broadcasting Switch One mixed microphone output 1/4” and XLR jacks Carrier Frequency: 174MHz-216MHz Dynamic Range: 92dB Total Harmonic Distortion: 0.5% Frequency Response: 50Hz 16KHz Operation…
Click here to learn more about Pro VHF Wireless Mic System
Wireless 2 Mic System VHF
Professional VHF 2 Channel Wireless System Dual Table Top Microphones Included Dual Telescoping Receiver Antennas Dual Volume Controls On/Off Broadcasting Switch 1/4? Individual Line Outputs & Mixed 1/4” Outputs Carrier Frequency: 210-270Mhz Dynamic Range: 92dB Total Harmonic Distortion: 0.5% Frequency Response: 50Hz 16KHz Operation Range: 50-180 Meters Signal to Noise Ratio: 90dB Receiver Power …
Click here to learn more about Wireless 2 Mic System VHF
Wireless IP Pan/Tilt/ Night Vision Internet Surveillance Camera Built-in Microphone With Phone remote monitoring support(Black) $46.88
Specs:
Image Compression Format: M-JPEG standard
Image Resolution: VGA(640×480) / QVGA(320×240)
Sensor: 1/4 inch CMOS, 300,000 Pixels
Light frequency: 50Hz, 60Hz or Outdoor
Audio compression: ADPCM
Data rate: 802.11b: 11Mbps (Max.), 802.11g: 54Mbps (Max.)
Ethernet: One 10/100Mbps RJ-45
Viewing angle: 67?
Horizontal Rotating Angle: 0~270?
Vertical Rotating Angle: 0~120?
Alarm Mode: motion detection…
Click here to learn more about Wireless IP Pan/Tilt/ Night Vision Internet Surveillance Camera Built-in Microphone With Phone remote monitoring support(Black)
2 pack Foscam FI8910W Wireless/Wired Pan&Tilt IP Network Camera with IR-Cut Filter for True Color Images – 8 Meter Night Vision and 3.6mm Lens (67° Viewing Angle) – White NEWEST MODEL $197.98
Replacing the Foscam FI8918W, the FI8910W is the latest camera from Foscam Digital Technologies LLC. The FI8910W is superior in that it includes an embedded IR-Cut filter which dramatically enhances the picture and color quality by automatically adjusting the lighting exposure via mechanical filter to provide true and accurately colored images that are not washed out. If you previously used a FI89…
Click here to learn more about 2 pack Foscam FI8910W Wireless/Wired Pan&Tilt IP Network Camera with IR-Cut Filter for True Color Images – 8 Meter Night Vision and 3.6mm Lens (67° Viewing Angle) – White NEWEST MODEL
Wansview Wireless IP Pan/Tilt/ Night Vision/ Internet Surveillance Camera Built-in Microphone With Phone remote monitoring support $48.77
Specs:
Image Compression Format: M-JPEG standard
Image Resolution: VGA(640×480) / QVGA(320×240)
Sensor: 1/4 inch CMOS, 300,000 Pixels
Light frequency: 50Hz, 60Hz or Outdoor
Audio compression: ADPCM
Lens: f: 3.6mm, F:2.4 (IR Lens)
Data rate: 802.11b: 11Mbps (Max.), 802.11g: 54Mbps (Max.)
Ethernet: One 10/100Mbps RJ-45
Viewing angle: 67º
Horizontal Rotating Angle: 0~270º
Vertical Rotating Angle: 0…
Click here to learn more about Wansview Wireless IP Pan/Tilt/ Night Vision/ Internet Surveillance Camera Built-in Microphone With Phone remote monitoring support
Gator Gm-1W Wireless Mic System Gig Bag $49.99
This Gator messenger bag holds a single wireless unit with plenty of space for cables, lavaliers, and a wireless mic with the transmitter mounted. The front and back unzip for easy access and your transmitter antenna can be extended with your wireless system in the bag. Includes accessory storage space, a shoulder strap, and padded handles.Holds a single wireless unitPlenty of space for cables, Lavaliers, and wireless mic with the transmitterFront, back, and top unzip for easy accessReceiver stays in bag during usePouch for in-ear monitors or accessoriesWorks with front or rear-mount antennasFrequency-data card located on sideWorks with half-rack size receiversAntenna can be extended while in bagAccessory storage spaceShoulder strapPadded handles
Click here to learn more about Gator Gm-1W Wireless Mic System Gig Bag
Vocopro Uhf-3205 Dual Rechargeable Wireless Mic System $299
The UHF-3205 wireless microphone system operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this package are two wireless rechargeable microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the VocoPro UHF-3205.2 wireless rechargeable handheld mics includedIncluded microphone charger charges both microphones at the same time2 unbalanced mic outputs (1/4″) and 1 mixed output (1/4″)UHF Band 629.40MHz – 694.11MHzRugged mic grilles protect the microphone cartridge and prevent the mic from rollingIndividual volume controls for precise vocal balancingLow charge indicator (LED) on micsDual antennas provide clear signal receptionRugged 1 RU metal receiver chassis
Click here to learn more about Vocopro Uhf-3205 Dual Rechargeable Wireless Mic System
Shure PGX Digital Lavalier Wireless Microphone System with WL85 Mic $499
The PGX Digital Lapel Wireless System from Shure adds the clarity of 24-bit digital audio to the legacy of trusted Shure microphone options for wireless performance. This system includes the WL85 cardioid condenser lavalier for general-purpose sound reinforcement applications requiring good rejection of ambient noise. Also includes tie clip and windscreen.
Click here to learn more about Shure PGX Digital Lavalier Wireless Microphone System with WL85 Mic
VocoPro UHF-3205 Dual Rechargeable Wireless Mic System $219.99
The UHF-3205 wireless microphone system operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this package are two wireless rechargeable microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the VocoPro UHF-3205.
Click here to learn more about VocoPro UHF-3205 Dual Rechargeable Wireless Mic System
VocoPro UHF-3200 Dual Wireless Mic System $229
The UHF-3200 operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this VocoPro package along with the wireless receiver are two wireless microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the UHF-3200.
Click here to learn more about VocoPro UHF-3200 Dual Wireless Mic System
Gator Gm-4Wr 4 Wireless Mic System Case $239.99
With the Gator GM-4WR has enough room to tote up to 4 half-rack wireless systems in safety. Constructed of rugged polyethylene with reinforced corners, there are 4 half-rack shelves and soft foam slots for microphones and body pack transmitters. The convoluted foam lid provides extra padding. The Gator case features chrome corners, recessed chrome latches, an accessory pocket, carpeted interior and threaded rack rails. Carry handle on top and rubber feet on the bottom.Polyethylene constructionHolds 4 half rack wireless microphone systemsLid-mounted 4 slot mic holderSoft foam mic/body pack slotsConvoluted foam lidReinforced chrome cornersRecessed chrome twist latchesAccessory pocketCarpet lined interiorThreaded rack railTop mounted carry handleRubber feet4 half-rack shelves
Click here to learn more about Gator Gm-4Wr 4 Wireless Mic System Case
Used Vocopro Uhf-3205 Dual Rechargeable Wireless Mic System $207.36
The UHF-3205 wireless microphone system operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this package are two wireless rechargeable microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the VocoPro UHF-3205.2 wireless rechargeable handheld mics includedIncluded microphone charger charges both microphones at the same time2 unbalanced mic outputs (1/4″) and 1 mixed output (1/4″)UHF Band 629.40MHz – 694.11MHzRugged mic grilles protect the microphone cartridge and prevent the mic from rollingIndividual volume controls for precise vocal balancingLow charge indicator (LED) on micsDual antennas provide clear signal receptionRugged 1 RU metal receiver chassis
Click here to learn more about Used Vocopro Uhf-3205 Dual Rechargeable Wireless Mic System
Galaxy Audio ECDRHH38 Dual Handheld UHF Wireless Microphone System $199.99
The Galaxy Audio ECDR/HH38L is a dual-channel, handheld vocal mic wireless system, with 16 switchable UHF channels available for each mic. This allows the user to select an interference-free UHF channel for performance.
Click here to learn more about Galaxy Audio ECDRHH38 Dual Handheld UHF Wireless Microphone System
Pyle Portable PA System with Wireless Lavalier Mic $186.14
This wireless public address system converts any room large or small into an amplified hall. This system allows freedom of movement and includes a handheld wired microphone.Built-in 12 V 1.2A Rechargeable batteriesBuilt-in One Channel VHF Wireless ReceiverWireless Lavaliere/Headset MIC1 Bonus Wired Microphone IncludedFM Radio1 Microphone InputSeparate Wired MIC and Wireless MIC Volume ControlsREC Line OutPower, RF and Charge LED IndicatorsPower ON/OFF SwitchAC 120V / 60HZ/DC12 – 15V For Car Plug Charger (Adapter Not Included)Power Output: 80 WattsFrequency Range: 160 – 270 MHzOperating Range: Up to 100 feetColor: BlackDimensions: 7.1 inches wide x 4.3 inches deep x 11.8 inches highWeight: 9.7 pounds
Click here to learn more about Pyle Portable PA System with Wireless Lavalier Mic
VocoPro UHF-3205 Dual Rechargeable Wireless Mic System 886830170850 $139.5
The UHF-3205 wireless microphone system operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this package are two wireless rechargeable microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the VocoPro UHF-3205.
Click here to learn more about VocoPro UHF-3205 Dual Rechargeable Wireless Mic System 886830170850
VocoPro UHF-3205 Dual Rechargeable Wireless Mic System 886830064173 $237.15
The UHF-3205 wireless microphone system operates on the less-crowded UHF frequency band giving you a clearer, interference-free sound. Each mic channel has its own volume control and you can either output both channels independently or together using the mixed output channel. Included in this package are two wireless rechargeable microphones with upgraded, durable metal bodies. Enjoy wireless freedom at home or in the club with the VocoPro UHF-3205.
Click here to learn more about VocoPro UHF-3205 Dual Rechargeable Wireless Mic System 886830064173
Vocopro Uhf-5800 Plus 4-Mic Wireless System With Mic Bag Ch 3 $399.99
Experience ultimate freedom with the UHF-5800, VocoPro’s first 4-channel UHF wireless mic system. With 4 handheld mics, each on their own independent UHF channel, the UHF-5800 gives you maximized vocal options without the fear of frequency interference. Going wireless means that you are free from cables for more active performances that the crowd will never forget. Plus, a 12-hour Mic battery life means the party can go all night. KJs will love that each mic channel has its own field-replaceable module that easily slides out, without the need for tools and without affecting the functionality of the other channels. Vocalists, home entertainment enthusiasts, and club-goers will all benefit from the reliability and versatility of the UHF-5800.Complies with New FCC Frequency Rules*Available in 2 frequency sets:4 individual XLR Mic Outputs and one 1/4″ Mixed Output4 Handheld mics includedIndividual Volume controls for precise vocal balancing4 independent Field-replaceable ModulesInterference-resistant UHF Band operationRugged 1RU metal receiver chassisLow power consumption design for longer battery lifeIncludes 4 mic holders and mic bag*FCC license may be required
Click here to learn more about Vocopro Uhf-5800 Plus 4-Mic Wireless System With Mic Bag Ch 3
Vocopro Uhf-5800 Plus 4-Mic Wireless System With Mic Bag Ch 4 $399.99
Experience ultimate freedom with the UHF-5800, VocoPro’s first 4-channel UHF wireless mic system. With 4 handheld mics, each on their own independent UHF channel, the UHF-5800 gives you maximized vocal options without the fear of frequency interference. Going wireless means that you are free from cables for more active performances that the crowd will never forget. Plus, a 12-hour Mic battery life means the party can go all night. KJs will love that each mic channel has its own field-replaceable module that easily slides out, without the need for tools and without affecting the functionality of the other channels. Vocalists, home entertainment enthusiasts, and club-goers will all benefit from the reliability and versatility of the UHF-5800.Complies with New FCC Frequency Rules*Available in 2 frequency sets:4 individual XLR Mic Outputs and one 1/4″ Mixed Output4 Handheld mics includedIndividual Volume controls for precise vocal balancing4 independent Field-replaceable ModulesInterference-resistant UHF Band operationRugged 1RU metal receiver chassisLow power consumption design for longer battery lifeIncludes 4 mic holders and mic bag*FCC license may be required
Click here to learn more about Vocopro Uhf-5800 Plus 4-Mic Wireless System With Mic Bag Ch 4
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