Wireless Distribution System

A Wireless Distribution System is a system that enables the interconnection of access points wirelessly. As described in IEEE 802.11, it allows a wireless network to be expanded using multiple access points without the need for a wired backbone to link them, as is traditionally required.

An access point can be either a main, relay or remote base station. A main base station is typically connected to the wired Ethernet. A relay base station relays data between remote base stations, wireless clients or other relay stations to either a main or another relay main station. A remote base station accepts connections from wireless clients and passes them to relay or main stations. Connections between "clients" are made using MAC addresses rather than by specifying IP assignments.

All base stations in a Wireless Distribution System must be configured to use the same radio channel, and share WEP keys if they are used. They can be configured to different service set identifiers.

WDS may also be referred to as repeater mode because it appears to bridge and accept wireless clients at the same time (unlike traditional bridging). It should be noted, however, that throughput in this method is inversely proportional to the number of "hops", as all traffic uses the same channel. For example, client traffic going through one relay station before it reaches the main access point will see at most half the maximum throughput that a directly connected client would experience.

Wireless Mesh networking

Wireless mesh networking is mesh networking implemented over a Wireless LAN

Whereas the Internet is mostly a wired based, co-operative electronic communication infrastructure similar to the international postal agreement, in that messages are mutually delivered and relayed within their separate domains free of charge (i.e. if you relay my messages within your domain I'll relay yours within mine), Mesh is a wireless co-operative communication infrastructure between a massive amount of individual wireless transceivers (i.e. a wireless mesh). This cooperative wireless array concept was first proposed in 1995 under a Canadian patent called Massive Array Cellular System (MACS). The inventor, Victor Pierobon, designed it solely as a disruptive technology to replace all chargeable communication services, such as landline telephones, cellular phones, and cable TV with an entirely free service, a user based, user solely owned communication infrastructure. To enable this, MACS route messages using GPS or longitude/latitude location, navigation between other MACS to the destined geo-location. Each MACS device is a multi-channel repeater/transceiver.

This type of infrastructure is decentralized (with no central service provider), relatively inexpensive, and very reliable and resilient, as each node need only transmit as far as the next node. Nodes act as repeaters to transmit data from nearby nodes to peers that are too far away to reach, resulting in a network that can span large distances, especially over rough or difficult terrain. Mesh networks are also extremely reliable, as each node is connected to several other nodes. If one node drops out of the network, due to hardware failure or any other reason, its neighbours simply find another route. Extra capacity can be installed by simply adding more nodes. Mesh networks may involve either fixed or mobile devices. The solutions are as diverse as communications in difficult environments such as emergency situations, tunnels and oil rigs to battlefield surveillance and high speed mobile video applications on board public transport or real time racing car telemetry.

The principle is similar to the way packets travel around the wired Internet — data will hop from one device to another until it reaches a given destination. Dynamic routing capabilities included in each device allow this to happen. To implement such dynamic routing capabilities, each device needs to communicate its routing information to every device it connects with, "almost in real time". Each device then determines what to do with the data it receives — either pass it on to the next device or keep it. The routing algorithm used should attempt to always ensure that the data takes the most appropriate (fastest) route to its destination.

The choice of radio technology for wireless mesh networks is crucial. In a traditional wireless network where laptops connect to a single access point, each laptop has to share a fixed pool of bandwidth. With mesh technology and adaptive radio, devices in a mesh network will only connect with other devices that are in a set range. The advantage is that, like a natural load balancing system, the more devices the more bandwidth becomes available, provided that the number of hops in the average communications path is kept low.

To prevent increased hop count from cancelling out the advantages of multiple transceivers, one common type of architecture for a mobile mesh network includes multiple fixed base stations with "cut through" high-bandwidth terrestrial links that will provide gateways to services, wired parts of the Internet and other fixed base stations. The "cut through" bandwidth of the base station infrastructure must be substantial for the network to operate effectively. However, one feature of wireless mesh networks is that an operator need only deploy a minimal base station infrastructure, and allow the users themselves to extend the network.

Since this wireless Internet infrastructure has the potential to be much cheaper than the traditional type, many wireless community network groups are already creating wireless mesh networks.

VOIP Server TELES IPCC

TELES.iPPCC is your profit center for prepaid and calling card business. Specifically designed for small and medium-sized enterprises, TELES.iPPCC is a scalable, carrier-grade application which facilitates swift entry into the expanding prepaid market (mobile and residential).

Providing the complete start-up palette of intelligent, value-adding prepaid features (including residential prepaid, flexible tariff plan, reseller support, phone shop support and comprehensive reporting and monitoring), TELES.iPPCC can be easily configured and maintained. TELES.iPPCC entry level configuration begins at 120 to 480 simultaneous calls, with upgrading to 2000 plus calls possible as demand grows.

This server has a chip speed of 2 GIGAHERZ and has a genuine licensed Windows 2000 Professional OS installed.

Making use of an intuitive and easy-to-use internet-based GUI, TELES.iPPCC offers standard prepaid call flow, CLI-based authentication, shared prepaid accounts and even residential prepaid – all in a number of different language options (English, French, German, Italian and Spanish).

Comprehensive account and call-related data provision allows for round-the-clock monitoring and user account-based reporting tailored to exact demands – be it prepaid card call history, batch details, daily/monthly call distribution, card reload history or reseller reload history.


TELES_iPPCC_Brochure.pdf
TELES_iPPCC_Datasheet.pdf

The following descriptive information was pasted from the PDF files (above):

TELES.iPPCCTELES.iPPCC
Your profit center for Calling Cardand Residential PrePaid business
Complete PrePaid and Calling Card solution
Reseller and Phone Shop support
Supports Residential PrePaid scenario
Powerful and efficient call flow model
Flexible tariff plan, including specialpromotion periods
Remote administration and monitoring
PrePaid solution for market entry and versatile business modeling: PrePaid businesses are both convenient andsecure for customers and service providers. Whenever customers depend on being mobile, instant telephoneaccess is required, or you need to serve customers with limited or poor credit histories – PrePaid is the way to go.In countries where telecom infrastructures are not fully developed, Prepaid Calling Cards allow residents andvisitors access to long distance services that would otherwise not be available.
Calling Cards are also an inexpensiveshort-term solution while traveling, offering full cost control and low up-front financial commitment.
Customizable digital announcements assure that all services are accessible in the end-user's language.TELES.iPPCCTELES.iPPCC can be integratedinto heterogeneous networkenvironments including PSTNand VoIP.
Existing or newTELES.iSWITCH operators investminimal capital to start theirlucrative PrePaid businesses.Combined with TELES.iSWITCHlocal exchange, both for TDMand VoIP subscribers, TELES.iPPCCalso serves end consumers withCalling Card needs.TELES.iPPCC is easily administratedby the intuitive web-basedmanagement interface.TELES.iPPCC is a scalable, carrier-grade, field-proven applicationproviding a complete and full-featured framework for PrePaidServices. Its extremely versatile web-based administration interfacecan be accessed via any IP connection either from the localnetwork or from a remote device.TELES.iPPCC provides intelligent and value-adding prepaid features.

Flexible Tariff Plan is readily available to enable prepaid operatorsto design highly attractive tariff plans based on multiplecriteria. Even the consideration of special promotional periods isnot a problem. All common call-flow procedures are available.The PrePaid Calling Card option targets small or medium-sizedcarriers and service providers. It allows a speedy entrance into thelucrative prepaid market. The entry configuration can handlebetween 120 and 480 simultaneous calls. Further upgrades to2000 and more calls can be made possible by separating the databasefront- and back-end processors to different machines andupgrading performance licenses.Once the system is installed at the carrier's location the systemcan be set up for a virtually unlimited number of Phone Shops,each shop operator having its own custom tailored view of thesystem, depending on the allocated user rights. Housing theserver at the carrier's location relieves the Phone Shop operatorfrom having to spend money on first hardware, system maintenanceor system redundancy, but allows him to operate his ownvirtual server as if it were installed at the shop's location. Oncethe Phone Shop operator has taken over administration of hisown system it is even possible for him to set up user accounts sotightly restricted that the end customer may login to see hiscurrent account status but has absolutely no administrativerights. Additionally, TELES.iPPCC's account management alwaysassures that the user's view of the system will only show theelements he is allowed to see.TELES.iPPCC offers extensive support for Calling Card resellers.Card batches can be tailored to suit any desired purpose andreflect any desired pricing structure. Its versatile card administrationallows you to set up commission on a per reseller basis withthe flexibility to account for different commissioning models.TELES.iPPCC is also a carrier platform for offering ResidentialPrePaid services. The subscriber with a charged account can usethe network from his home location.
The user is identified by hisCLI, and the pre-selected connection to the service provider istransparently established without further user interaction.

IP NETPSTNISDNIPTDMResellerPhone
ShopS I PTELES.iPPCCAdminExperience a smooth transition to VoIP:you decide on your VoIP capacity!In this sample calculation the call is split into 5 intervals. Each interval is split into units ofdifferent duration and pricing. E.g.: Interval 1 has 3 units, each of 20 seconds at a price of35 cents. You have virtually unlimited possibilites to setup your individual charging table.TELES.iPPCCnFlexible call charging dependanton day of the week, holidays andspecial promotion periodsnUnlimited time periods per day(e.g. peak/off-peak hours)nUp to five different call chargeperiods within one call for eachdestinationnCharging properties per batch/cardnOrigin and access dependent tariffsnCall setup/grace period at beginningof callnCharging during call offset timenPreconfigured Prefix TablenImport functionality for tariff plan0 ct10 ct20 ct30 ct3 €2 €1 €0 €n €ttstart interval 2nd 3rd 4th 5thC A L L D U R A T I O N1 2 3 1 1 2 3 4 5 1 2 1 2 nCumulated Call ChargeRate per Interval

Virtually unlimited call charging capabilites:Web-based GUInWeb based look & feelnExtensive online helpnCustomizable screen (Branding)n
Multiple user web access withindividual views, based on useraccess rightsReseller AdministrationnSeparate charging for each resellern
Autonomous platform accessnIndividual reporting per resellern
Balance reloadnFlexible tariff assignmentManagement of cards and batchesn
Card generation with differentvalidity typesnDifferent batch propertiesn
Generation groups of batchesnLater modification of batchesnCard and batch maintenancenExtensive report generationnStandard PrePaid call flow (A-side userauthentication via PIN, card validation,destination validation, connect to B-Side,charging).nMultiple languages (English, French,German, Italian, Spanish)nCLI based authenticationnShared PrePaid accountsResidential PrePaidnAccess to last-mile customersnOverlap sending includedFlexible Tariff PlannCLI or access number dependent chargingnCall setup feenCharging of call offset timeReseller SupportnSpecial service for operators and servicenHandle PrePaid cards via wholesalersnCompatible web-based customer careenvironment including detailed Resellerrelated reportsTELES.iPPCC is a platform that, onceinstalled and activated by the carrier,can easily be configured and maintainedby the actual service provider. Extensiveand clearly prepared reports make it possibleto get an instant business overview.Configuration and monitoring is possiblewhereever there is access to the internet.TELES.iPPCC is the perfect PrePaidCalling Card solution for Phone Shopsthat need more flexibilty to adapt theirbusiness models to new scenarios.Technical SpecificationsPhone Shop SupportnSpecial service for operators and serviceprovidersn Charging of multiple simultaneous callson a single accountnCompatible web-based customer careenvironment including detailed PhoneShop related reportsComprehensive reporting & monitoringnMonitoring and reporting based onaccount and call related datanExport functionality via CSV file or PDF filenIndividual results shown only to thecorresponding GUI usernVersatile reporting available (individual orper reseller) e.g.:~ PrePaid Card call history~ Batch details~ Card/account details~ Daily call distribution~ Monthly call distribution~ Card reload history~ Card activation history~ Reseller reload history* in preparation

1 Watt Power over Ethernet POE Amplifier Renasis POE30

I know there are a lot of wifi amplifiers on the market but the cheapest one and also value for money is the Renasis POE30 1 Watt Amplifier.Renasis has recently released this 1 Watt POE compatible wifi amplifier.

The best thing is that this can be powered up by either the POE injector cable or via the standard AC voltage supply.

I am thinking of buying this Renasis Wifi 1 Watt amplifier, but right i dont have that much cash so i will wait some time.

Apart from this the best Wifi amplifier, i mean in 2.4 Ghz wireless mesh networks and other CPE installations, the best wifi amplifier is the Luxul 1 Watt amplifier.

It is one of the best available at HD communications corp and Also at FAB corp, but the price is very expensive.

Here are some specs and information about this Renasis 1 Watt POE Amplifier(2.4 Ghz)

Unique Power over Ethernet power system optimized for 802.11b, 802.11g and 802.11g+ includes 48V Power supply and power injector. The POE30 is an innovative RF amplifier designed to power both itself and an 802.3af compliant AP/Router through a single CAT-5 data cable. With its innovative design, Integrators can reduce the number of required cable runs, thus lowering their overall installation time and cost. The POE30 accomplishes this by eliminating the co-axial cable between the traditional amplifier and its DC power injector. By eliminating the intermediate coaxial cable, precious dB's are recovered resulting in a cleaner signal and greater range.

Technical Details

Model: POE30
Detection: Pre-Standard
Splitter: Not needed

This is another POE kit which can be used to power POE as well as non-POE devices

PLANET Power Over Ethernet Kit POE-100SK

Using the Planet POE adapters, you can power most DC network devices (hubs, Wireless access points, cameras etc) over the same Cat 5/5e cable used to connect the device to the network.

When positioning network devices, system designers always have to consider the location of power outlets. In some cases, this will restrict the optimum placement of devices or incur additional cost in installing new outlets. Planet's PoE solution addresses these problems.

The PoE product includes two units: an Injector and a Splitter. An Injector inserts current into the unused wires in a standard network cable (pins: 4, 5, 7 and 8) allowing the cable between the Injector and the Splitter to transfer power and network signals simultaneously. The maximum distance between the Injector and Splitter can reach 100m/328ft, as defined by the IEEE 802.3 standard.

By eliminating the need for power cords, PoE has following benefits:

Cost saving - The cost of deploying PoE is much lower than a traditional electrical circuit.

Ease of network planning - the system designer has more flexibility to locate network devices. Independence from power outlets makes it easier to relocate devices or obtain the best performance, e,g: fine-tuning the RF coverage of an AP.

Steady Wireless LAN connectivity - PoE allows a Wireless Access Point to be placed close to the antenna, thus avoiding signal loss over antenna cable.

Product Application

Where the Installation site of a network device is not close to a power outlet. Used with a Wireless Bridge, Access Point, Internet Camera or other device which requires an external DC power adapter. The basic connection structure is shown beside.

As illustrated below. The Wireless Access Point in a warehouse must be installed on the roof so that all computers can make use of it. Another AP on the second floor of an office building also has to find an optimal position to provide service to all PCs on the same floor. Moreover, an Internet Camera is installed on the left side of the building for security surveillance. In the past, system designers are forced to place these devices close to power outlets, and perhaps, sacrifice performance or reliability. Using PoE, you can implement a high performance network without incurring additional costs by requiring addition or reloacation of power outlets.

Key Features

Provides low-voltage DC power over existing Category 5 cabling to a device with an Ethernet port

Distance up to 100 meters

Protects devices from possible damages due to power-surges

Three different output voltage options (5V/2A, 7.5V/1.5A, 12V/1A) to fit various devices

Work with EIA568, category 5, 4-pair cables for 10Base-T or 100Base-TX

SPECIFICATION


Model POE-100 / POE-100S
Category 5 pin power usage Pin 4, 5 +:Pin 7, 8
Output voltage, current DC 5V, 2A DC 7.5V, 1.5A DC 12V, 1A
Ethernet connector RJ-45
Ethernet data rate 10/100Mbps
Number of devices that can be powered 1
Ethernet data cable TIA/EIA-568, Category 5/5e cable
Dimensions (L x W x H) 64.5mm x 42.3mm x 20.4mm
Emission FCC class B, CE-mark

Soekris Engineering net4501

This compact, low-power, low-cost, advanced communication computer is based on a 133 Mhz 486 class processor. It has three 10/100 Mbit ethernet ports, up to 64 Mbyte SDRAM main memory and uses a CompactFlash module for program and data storage. It can be expanded using a MiniPCI type III board and a low-power standard PCI board.
It has been optimized for use as a Firewall and VPN Router, but has the flexibility to take on a whole range of different functions as a communication appliance. The board is designed for long life and low power.

Specifications:

100/133 Mhz AMD ElanSC520
16-64 Mbyte SDRAM, soldered on board
1 Mbit BIOS/BOOT Flash
CompactFLASH Type I/II socket, 8 Mbyte FLASH to 4 Gbyte Microdrive
1-3 10/100 Mbit Ethernet ports, RJ-45
1 Serial port, DB9. (optional 2nd serial port)
Power LED, Activity LED, Error LED
Mini-PCI type III socket. (t.ex for optional hardware encryption.)
PCI Slot, right angle 3.3V only. (t.ex for optional WAN board.)
8 bit general purpose I/O, 14 pins header
Hardware watchdog
Board size 4.85" x 5.7"
Power using external power supply is 6-20V DC, max 10 Watt
Option for 5V supply using internal connector
Operating temperature 0-60 °C

Software:

comBIOS for full headless operation over serial port
PXE boot rom for diskless booting
Designed for FreeBSD, NetBSD, OpenBSD and Linux
Runs most realtime operating systems

Soekris net4801

Saw this on ebay recently looks good to run dd-wrt on it but lets see..

i am amazed by its specs...

233 to 266 Mhz NSC SC1100 single chip processor

32-256 Mbyte SDRAM, soldered on board

4 Mbit BIOS/BOOT Flash
CompactFLASH Type I/II socket, 8 Mbyte FLASH to 4 Gbyte Microdrive
UltraDMA-33 interface with 44 pins connector for 2.5" Hard Drive
1-3 10/100 Mbit Ethernet ports, RJ-45
2 Serial ports, DB9 and 10 pins header
USB 1.1 interface
Power LED, Activity LED, Error LED
Mini-PCI type III socket. (t.ex for optional hardware encryption.)
PCI Slot, right angle 3.3V signaling only, dual PCI slot option planned.
12 bit general purpose I/O, 20 pins header
Temperature and voltage monitor
Hardware watchdog
Board size 5.2" x 5.7"
Power using external power supply is 6-20V DC, max 15 Watt
Option for 5V supply using internal connector
Operating temperature 0-60 °C

Software:

comBIOS for full headless operation over serial port
PXE boot rom for diskless booting
Designed for FreeBSD, NetBSD, OpenBSD and Linux
Runs most realtime operating systems