Allows us to deploy illegal Wimax and legal FSO Edit
A DsLam fixed wired exchange and MeshNetworking is integrated around FreeSpaceOptics. For example connect four joint perimeter houses with CAT-5 for an Ethernet based network and call them the CentralOffice. Each of these four houses becomes a FSO hot-spot that each connect to ten other homes via FSO each for a total of 40. Link clusters of CentralOffices via DirectBuriedDuct in a way that minimizes the cabling runs, thus the cost of under ground ducting is reduced by orders of magnitude compared to the inefficient way Neotel are building networks. These CentralOffice nodes can scale to any size via fiber and DsLam. If 40 homes share the cost of a R15/m underground HDPE running under the road from CO to CO at 300m it works out to R112/home.
Joint perimeter wall ducting Edit
Click on the thumbnail to get a larger image. A 1km backbone trench is formed down the joint perimeter of the houses as indicated by the yellow line using TrenchingEquipment. A 75mm or 110mm CableFlex pipe is laid inside this trench down the joint perimeter of the houses. The backbone is only on one side of the houses(Yellow stripe). The green line indicates where a poly-pipe is laid via a walk-behind VibratoryPlow, connecting the house to the backbone. A galvanised wire is inserted inside the CableFlex with which the TwistedPair copper is pulled down the length of the pipe. Bentonite is used to lubricate the inside of the CableFlex should the distance that the wires must be pulled exceed a certain limit. Bentonite is usually used to lubricate the drillrods of HorizontalDirectionaldrilling. Instead of using a galvanised steel wire to pull the cables from house to house a CableJettingAndPipes machine can be used. http://www.didata.co.za recently used a Cablejetting machine to insert FiberAndCopper inside Wits University fiber underground ducting network. At the junction of H3,H4 (magenta circles on image) a small tunnel under the wall foundation is made to insert the CableFlex. Making a short tunnel under the wall foundation is a simple process and there is no need to use a Piercingtool, DingoDrill or soil-displacement-mole as described at HorizontalDirectionaldrilling for such a short distance.
The TwistedPair housed inside LDPE connects each house to the backbone. The LDPE connects to the DrillBoxes against the wall. A hole is drilled through the wall through which the TwistedPair is pulled, connecting the house to the CableFlex backbone. At any time additional fiber or copper can be CableJettingAndPipes to any house. The DsLam is placed at the CentralOffice as the picture indicates. Each house has an ADSL modem which connects to the DsLam. With additional TwistedPair installed in the backbone CCTV is streamed to the CentralOffice as indicated by the red cylinder in the picture. Any house could function as the CentralOffice but to minimise the cable runs the centre of the street should be the designated house. Or even four centre houses could be used. A Rodpusher(See HorizontalDirectionaldrilling can be used to tunnel down the joint perimeter line(Yellow line) for houses that don't wish to allow TrenchingEquipment to cut a trench down the length of their wall. A HDPE pipe is pulled back into the tunnel by the rodpusher.
Eight homes via CAT-5 Edit
- Houses (a,b,c,d) to (e,f,g,h) are bridged by one LinksysWrt54g or FreeSpaceOptics.
- Homes (a,b,c,d) connects via direct burial CAT-5 cable respectively.
- See TwistedPair for making own Ethernet direct-burial CAT-5 cable. R5,00/m
- Houses (a,b,c,d) around magenta circle shares a switch R150x2=R300(both sides street)
- Router R300x2 = R600
- VDSL2 modem R600
- The green stripe is the fiber line connecting the red cylinders or CentralOffice via DirectBuriedDuct.
- TwistedPair x 5 for 20 homes left and right of CO - R3,5/m = R1750
- Each CentralOffice (red cylinders) houses the DsLam
- Each DsLam connects via fiber to the next DsLam and can scale to any size across South Africa.
- CAT5 from each home to Switch at Servingareainterface 80mx2x2xR5 = R800
- CAT5 from Southside of home to Northside of home for LinksysWrt54g. 30mx2xR5=R300
- Wi-Fi Acces point to bridge (a,b,c,d) across road to (e,f,g,h) R1000
- DrillBoxes at joint wall -> R200x2=R400
- Earthingplate for VDSL modem, switch and router. R100 - HardWare, OutDoorBox
- Extractor fan to prevent condensation inside router, modem and switch. R100
- Copper grounding rod for switch, router and VDSL modem. R50x2= R100
- Connecting box at each homes wall for Ethernet cat-5 cable -> R30x8= R240
- Pipe inserted through foundation wall at magenta circles: R20x8=R160
- Riser pipe from Cat-5 to DrillBoxes at joint wall: R20x8 = R160
- Surge Protectors.
- DsLam port R440.
- Sub cost: R7050 for eight homes
- Total cost is R881,00 per home or R70500 for eighty homes.
Wi-Fi and DSLAM combination Edit
With the DslamWifiTopology each street forms a Wi-Fi hotspot. The hot spots are linked via HDPE ducting or TelephonePoles down the center of the streets in the North South direction. Each hotspot connects to a VDSL2 modem which interfaces with a DsLam network at only one [[CentralOffice]. This is basically an emulation of how cellphone exchanges are built. Each mast links to the other via free space optics or fiber. Instead of using 2.4/5.8ghz they use the licences 900mhz and 1.8ghz bands to create a much larger CommunityBlockNetwork. From a cost/engineering trade-off perspective it is the most efficient way of creating bandwidth.
Take a section of 10 roads running from east to west 1km in length. Each road has 40 houses that connect via the green stripe in the North South direction to the CentralOffice (red cylinders) as in the picture at http://scratchpad.wikia.com/wiki/TelephoneNetworkRollout#Eight_homes_via_CAT-5. Instead of laying TwistedPair in the East-West direction from the magenta circles to the CentralOffice(red cylinder) the last 100,200,300 or 500m is bridged using Wi-Fi LinksysWrt54g or MeshNetworking.
From the North-South direction the ten roads are 1,3km in length for a total of 400 houses forming a CommunityBlockNetwork. In this DslamWifiTopology as many DsLams as needed are installed only at one CentralOffice at preferably road nr.5. The other roads(1,2,3,4,6...10) connects via MicroDuct, HDPE and TwistedPair to the main CentralOffice. The 75mm HDPE is laid under the road and the 20 properties. The TwistedPair and MicroDuct are inserted inside the HDPE via CableFlex manholes. The HDPE allows the network to scale by blowing fiber into MicroDuct or pulling more TwistedPair into the HDPE at the manholes.
Roads(1,2,3,4,6...10) each respectively forms a ResidentialWiFiHotSpot and their red cylinders in the picture will have the VDSL2 modem instead of a DsLam as in the http://scratchpad.wikia.com/wiki/TelephoneNetworkRollout#Eight_homes_via_CAT-5 topology.
The DslamWifiTopology is the most efficient and cost effective way of interconnecting 400 homes in a CommunityBlockNetwork. Only 20 homes instead of 400 will have MicroDuct and HDPE laid across their properties down the center in the North-South direction across the road via DirectBuriedDuct, TrenchingEquipment or http://scratchpad.wikia.com/wiki/HorizontalDirectionaldrilling#Rod_pushers. The CommunityBlockNetwork interconnects to the next one in the North/South direction up to any length across South Africa via fiber, illegal WiMax or MeshNetworking. With the DslamWifiTopology we don't need to tunnel under driveways but instead navigate around it and other obstacles such as swimming pools and only cut through the soil or tunnel under it via http://scratchpad.wikia.com/wiki/HorizontalDirectionaldrilling#Rod_pushers. The topology allows MeshNetworking to be used for what it was originally designed to do: Connect two points over a short distance.
Neotel and Telkom will never implement such a DslamWifiTopology because they will lose control over the network. Neotel has to cut the roads length wise at huge costs using imported machinery to maintain physical control over the network. These costs have to passed on to the consumer. With the DslamWifiTopology the community controls the last mile access which is what the Telcos are so frantic to prevent from happening.
Ducting stage 1:
- HDPE R10/m 75mm = R13000
- HorizontalDirectionaldrilling R200/m under roads = R6000
- Five manholes = R5000
- Total = R13000 + 5000 + 6000 = R24000
- Per home = R60
Ducting stage 2:
- Pull TwistedPair via manholes 10 strands R1.5/m = R15000
- Each TwistedPair connects a VDSL2 modem to the DsLam for 10 nodes.
- Total = R15000
- Per home = R40
DsLam and modems:
- 16port VDSL2 DsLam,1.6gigs shared - $1500 = R10000
- R1000 VDSL2 modem x 10 = R10000
- CAT5 cable R5000
- Total = R20000 + 5000 = 25000
- Per home = R62
- $43(Openwrt board and broadcom PCI from http://www.starnetwifi.com) = $43 - 50% discount for 100+ volume purchases thus $21.5 = R150,00
- Antenna made with mass produced low cost manual labor = R100
- CAT5 = R50
- Pigtail and connectors = R50
- Total = R140 000
- Per home = R350
* 15000 + 24000 + 25000 + 140 000 = R204 000 * Cost per home R510
Under the driveway ducting Edit
attachment:pavementTrench.png The backbone can also be laid under the driveway of every house as indicated by the yellow line. This is an alternative setup to the Joint Perimeter layout. Using a VibratoryPlow each house is connected to the backbone. The plow lays the LDPE pipe up to the House Perimeter. A hole is bored under the wall through the wall foundation with a Coredrill and a pipe is inserted under the wall. Inside the House Perimeter the VibratoryPlow completes the run to the DrillBoxes. The house on the other side of the joint wall is also connected via a VibratoryPlow to the backbone. The yellow line indicates where a trench is cut up to each driveway using TrenchingEquipment. Either a Rod-pusher, Piercing Tool, DingoDrill or HorizontalDirectionaldrilling is used to tunnel under the driveway. The tunnel must be at least 60cm below the driveway. Thus the driveway is not lifted or harmed in any way. A piercingtool is prefered for such a short distance under the driveway. The two CentralOffice(CO) on either side of the tarroad are connected via a Fiber optics backbone using DirectBuriedDuct. See FiberAndCopper. Either TelephonePoles or HorizontalDirectionaldrilling can be used to form this backbone. In this manner hundreds of residential blocks are connected to the fiber backbone linking the DsLam at each CentralOffice creating a vast community telephone network in South Africa.
Making money out of this Edit
Let a businessman lay out the R42000 capital for 80 homes as described under http://scratchpad.wikia.com/wiki/TelephoneNetworkRollout#Combine_wireless_with_DSLAM. Allow him a 100% profit and let every house sign a debit order for R120. After one year the debit order expires and the businessman has recouped his capital and made a profit. The Wi-fi gear and cableing installation will be completed by the businessman within a month. With the 80 homes now sharing a 1000meg local loop bandwidth everybody suspends their Telkom accounts and use their "line rental" money for the debit order. International bandwidth is a separate expense but will be significantly cheaper due to the combined purchasing power of 80 homes. If only http://www.datapro.co.za will get this voip thing going it will allow the entire South Africa to suspend their Telkom accounts. Telkoms inflated costs represents a huge opertunity for entrepeneurs out there to engage communities and convince them to rather channel their eternal "line rental" expense for only one year into their own telephone exchange.
The scope of the ANC/Telkom/DOC/Icasa enrichment fraud becomes worse as one researches just what communications equipment you can actually import and manufacture yourself with the "line rental" money alone. Motivate your community telephone network to your neighbour by telling him that at no additional cost he will get all the benefits of 80 homes working together such as CctvCameras, TelevisionOverInternet, vast increased international bandwidth, gameing and save thousands of rands the rest of his life just on "line rentals" alone. Telkom's present line rental of R110/month escelates by 10% a year.
Options in building a telephone exchange Edit
* CombineWirelessWithDslam * Joint-perimeter-wall ducting using TrenchingEquipment and a walk-behind VibratoryPlow * Under the driveway ducting using TrenchingEquipment,VibratoryPlow and Piercingtool(HorizontalDirectionaldrilling) * TelephonePoles * Clamp TwistedPair to Telkom's poles - UseTelkomsPoles or PolyPipeOnPerimeters * Cut through tar roads via DirectBuriedDuct or go under it via HorizontalDirectionaldrilling * BroadbandOverPowerlines are 3x more expensive than a DsLam rollout. * CWDM course wave division multiplexing only viable on fiber runs over 1km. * FiberAndDslamCombined * You can either build the network yourself or contract TelephoneNetworkBuilders
Links telephone networks Edit
* PolyPipeOnPerimeters * HybridMeshAndTelephone * FinancingTelephoneNetworks * TelephoneNetworkCosts * WirelessComparedtoTelephonePoles * http://www.telecomosp.com tycoelectronics or AMP for mp3 videos on OSP , MicroDuct * http://networktimes.co.za/news.aspx?pklNewsId=26362&pklCategoryID=198
Establish multiple drillboxes Edit
VibratoryPlow around the a perimeter. Lay 20mm LDPE and install TwistedPair, Rg-58,Molex ATX connector for desktop PC, Alarm cable and CAT-5 Ethernet cable. At various points on the LDPE install DrillBoxes and connect muyltiple types of cable to the DrillBoxes. At these points any Ethernet device, PIR or analog camara can be installed. Ideally the communications cable should be layed before the house is even built.
Combining CCTV with DSLAM Edit
A single TwistedPair will trasnmit the VDSL CPE CCTV data for five houses to the CentralOffice. Five houses will thus have 2.4megs available to them per house for simultaneous downstream transmission. CCTV data is only one-way to the CO. Copper is expensive and sharing TwistedPair in this manner reduces the costs. Each house has a ZoneMinder box. CAT5 cable streams the ZoneMinder box data to the ServingAreaInterface (purple box) from where it is uploaded to the VDSL bridge CPE. PolyPipeOnPerimeters shows the purple box(ServingAreaInterface)
Link Dslams with fiber optics Edit
["CWDM"] - course wave division multiplexing BR ["CWDM"] network switches allows a fiber strand to be 'split up' into four or more seperate data channels. Each channel uses a different nanometer range light spectrum. The CentralOffice ["CWDM"] sends data to the ["CWDM"] CPE device. Each ["CWDM"] device can interface with a DsLam. In this way an 8-core fiber can serivce 16 DSLAMs for example. The fiber is run down the centre of the streets as indicated by the red cylinders the pictures. The simplest is to suspend the fiber cable from telephone poles at the points indicated by the red cylinders. Underground ducting can be used but will escelate the costs. A telephone pole allows additional fiber to be suspended at anytime and thus a phased gradual cost effective rollout can be achieved.
VibratoryPlowing from perimeter to perimeter Edit
Lay 20mm LDPE from perimeter to perimeter via a VibratoryPlow. At the joint perimeter wall a powerfull CoreDrill is used to bore under the wall through the foundation of the wall. A galvanised pipe is inserted into this hole for the cabling. The reason why the walls crack of a built house is because a trencher wasn't used do dig 1m deep upto the sandstone layer. This trench must be filled up with building sand and then only must the cement foundations be layed. He concluded that building a house without a trencher is like a mechanic trying to fix an engine without a spanner.