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Broadband Bandwidth Chart
Dialup POTS 56K V90 Asymetric 6-24Kbps/6-20Kbps
Cellular GPRS over GSM Network Asymetric 30-60Kbps
Cellular CDMA 1xRTT Symetric 30-70Kbps peak 153.6Kbps
8 kHz x 8 bits PCM voice channel
Symetric 64Kbps
Cellular EDGE over GSM Network Asymetric 75-150Kbps
ISDN BRI Symetric 128Kbps
R-BGAN (Regional BGAN) Symetric up to 144Kbps
ISDN DSL (IDSL) Symetric 144Kbps
Skyway 1-Way Satellite, Bronze Asymetric up to 200Kbps/POTS
Cellular UMTS Asymetric 400-700Kbps
Cellular CDMA 1xEV-DO Asymetric 400-700Kbps Peak 2.4Mbps
Skyway 1-Way Satellite, Silver Asymetric up to 400Kbps/POTS
BGAN Symetric up to 492Kbps
Direcway Satellite Residential DW6000 Asymetric 400-500Kbps/50Kbps
Starband Residential 481 Asymetric 500Kbps/100Kbps
WildBlue Value Pak Asymetric 400-512Kbps/128Kbps
Direcway Satellite Home DW7000 Asymetric 400-700Kbps/128Kbps
Starband Telecommuter 481 Asymetric 750Kbps/128Kbps
Skyway 1-Way Satellite, Gold Asymetric up to 800Kbps/POTS
Direcway Satellite Commercial 750 DW6000 Asymetric 750Kbps/128Kbps
WildBlue Select Pak Asymetric 750Kbps-1Mbps/128Kbps
ClearWire Clear Value (pre-802.16) Asymetric 768Kbps/256Kbps
Direcway Satellite Commercial 1M DW6000 Asymetric 1Mbps/100Kbps
Starband Small Office 484 Asymetric 1Mbps/256Kbps
Direcway Satellite Professional DW7000 Asymetric 700Kbps-1Mbps/ 200Kbps
Skyway 1-Way Satellite, Platinum Asymetric up to 1.5Mbps/POTS
WildBlue Pro Pak Asymetric 1-1.5Mbps/128Kbps
Direcway Business Internet DW6000 Asymetric 1.5Mbps/100Kbps
Direcway Satellite Small Office DW7000 Asymetric 700Kbps-1.5Mbps/ 300Kbps
ClearWire ClearPremium, ClearPremium Choice & ClearBusiness (pre-802.16) Asymetric 1.5Mbps/256Kbps
DSL ADSL Lite Asymetric 1.5Mbps/640Kbps
DSL HDSL Symetric 1.54Mbps
24 Voice Channels
Symetric 1.544Mbps
Direcway Satellite Business Internet DW7000 Asymetric 700Kbps-2Mbps/ 500Kbps
ClearWire ClearPremium & Clear Business Plus (pre-802.16) Asymetric 2Mbps/256Kbps
Cable Modems Asymetric 2-10Mbps/90Kbps
Free Space Optics (laser) Symetric 1.54-622Mbps
E1 European ITU Standard
30 Voice Channels
Symetric 2.048 Mbps
DSL SDSL Symetric 2.3 Mbps
T1C / DS1C
48 Voice Channels
Symetric 3.152 Mbps
Wireless 802.11b 11Mbps 2.4GHz Asynchronous 5.6Mbps Symetric
Verizon Fiber Tier 1 FTTH Asymetric 5Mbps/2Mbps
T2 / DS2
96 Voice Channels
Symetric 6.312 Mbps
DSL ADSL Asymetric 8Mbps/640Kbps
E2 European ITU Standard
120 Voice Channels
Symetric 8.448 Mbps
WiMAX 802.16 Symetric 10Mbps
up to 70Mbps in backhaul applications
HomePlug® Ethernet over Power Lines Symetric Shared 14Mbps
Verizon Fiber Tier 2 FTTH Asymetric 15Mbps/2Mbps
Wireless 802.11g 54Mbps 2.4GHz Asynchronous 20-27Mbps Symetric
Wireless 802.11a 54Mbps 5GHz Asynchronous 27Mbps Symetric
Verizon Fiber Tier 3 FTTH Asymetric 30Mbps/5Mbps
E3 European ITU Standard
480 Voice Channels
Symetric 34.368 Mbps
T3 / DS3
672 Voice Channels
Symetric 44.736 Mbps
WiBro wireless mobile internet Symetric 50 Mbps
DSL VDSL Both 51 Mbps
Sonet OC-1 , STS-1 Symetric 51.84 Mbps
HiperMAN - wireless mobile internet Symetric 56.9 Mbps
Proxim Tsunami Multipoint 5.8GHz Symetric 60 Mbps
iBurst 802.20 wireless mobile intenet Symetric 64 Mbps
1,344 Voice Channels
Symetric 89.472 Mbps
E4 European ITU Standard
1,920 Voice Channels
Symetric 139.264 Mbps
T4 / DS4
4,032 Voice Channels
Symetric 274.17 Mbps
Sonet OC-3 , STS-2, STM-1 Symetric 155.52 Mbps
Sonet OC-9, STS-9, STM-3 Symetric 466.56 Mbps
E5 European ITU Standard
7,680 Voice Channels
Symetric 565.148 Mbps
Broadband Passive Optical Network (Fibre to the Home Trunk - FTTH- ATM network) Symetric 622 Mbps
Sonet OC-12, STS-12, STM-4 Symetric 622.08 Mbps
Sonet OC-18, STS-18, STM-6 Symetric 933.12 Mbps
Sonet OC-24, STS-24, STM-8 Symetric 1.24416 Gbps
Sonet OC-36, STS-36, STM-12 Symetric 1.86624 Gbps
Sonet OC-48, STS-48, STM-16 Symetric 2.48832 Gbps
Sonet OC-96, STS-96, STM-32 Symetric 4.97664 Gbps
Sonet OC-192, STS-192, STM-64 Symetric 9.953 Gbps
Sonet OC-768, STS-768, STM-256 Symetric 398.13120 Gbps
You can call us at:
Any Asymetric service is not recommended for web hosting.
Cellular Wireless Data Services
Technology Generation Max Throughput Expected Throughput Carriers
CSC 1G 14.4Kbps 2.4Kbps AMPS carriers
CDPD 1G 19.2Kbps 10Kbps AMPS carriers
iDEN 2G 56Kbps 9.6Kbps Nextel
GSM 2G 14.4Kbps 9.6Kbps
GPRS GSM 2.5G 115.2Kbps 30-60Kbps AT&T, Cingular, T-Mobile
EDGE GSM 2.5G 472Kbps 75-150Kbps AT&T (Cingular), T-Mobile
UMTS 3G 2Mbps 300-700Kbps AT&T (Cingular), T-Mobile(2008)
CDMA 1xRTT 2.5G 153.6Kbps 30-70Kbps Sprint PCS, Verizon
EDGE Evolution 3G 1.9Mbps .9Mbps
1xEV-DO Rev A
3G 2.4Mbps 400-700Kbps Monet Networks, Sprint PCS, Verizon
HSDPA 3.5G 1.8, 3.6, 7.2, 14.4Mbps 5.76Mbps planned 3.5G upgrade to UMTS
CDMA 3xRTT EV-DO Rev B 3.5G 4.9Mbps 1.8Mbps planned 3.5G upgrade to CDMA 1x systems to make compatible with UMTS and enables HSDPA.
LTE 4G 20+Mbps unknown Long Term Evolution - UMTS to compete with WiMAX.
E-HSPA 4G 42Mbps unknown Evolved HSDPA upgrade to UMTS standard.
UMB 4G 275Mbps 75Mbps Ultra Mobile Broadband CDMA2000 follow on in development
As defined by ITU a 3G system must deliver at least 144Kbps in each direction.

Information on cellular systems adapted from work by Andy Dorman and his article in Network Magazine, June 2003 pp.30-33.

Emerging Mobile (cellular) data solutions:
Various systems are being developed that are packet only delivery systems and not data on voice technology.
IPWireless is developing a hybrid 3G system referred to as UMTS TDD that is packet data over cellular class equipment that will deliver connection speeds of up to 3Mbps.
Flarion-Qualcomm and Netgear are developing a totally packet based solution not using modified cellular hardware. Their technology is called FLASH-OFDM with delivery speeds of 1-1.5Mbps with peak at 3.2Mbps downlink. Uplink is to be 300-500Kbps with peak at 900Kbps. With FlexBand the data rate can double to a peak downlink of 5.3Mbps and uplink can go to 1.8Mbps.
With these systems voice calls are made using VOIP instead of traditional circuit switched methods.

Hybrid Fiber/Coax
Bandwidth Voice Channels NTSC 45Mbps Video Channels MPEG-2 Video Channels
T3/DS3 672 1 7
T3A/DS3A 1,344 2 14
T4/DS4 4,032 12 45
OC-1 810 1 8
OC-3 2,430 3 18
OC-9 7,290 9 54
OC-12 9,720 12 96
HFC Coax/Fiber 16,704 151 for a 6MHz channel 0-996MHz 750 for a 9Mbps channel
Hybrid Fiber/Coax is used in Cable Television Industry. It also shows the benefits of using the full frequency spectrum of a medium (frequency division multiplexing) rather than the time division multiplexing normally used in voice and data networks. An HFC coax can deliver a capacity of 696 T1 lines.

To continue the chart above let's examine the payload requirements of the most demanding IP packet load, streaming broadcast video.

Number of Streams per media
Signal Type Mb/sec 100BaseT 1000BaseT 10000 Copper
Off The Air Channel 6 16 166 1666
SDI 270 0 3 33
HD-SDI 1485 0 0 6
SDI with JPEG2000 compression 30 3 30 300
HD-SDI with JPEG2000 compression 90 1 10 100
SD MPEG-2 compression 5 18 180 1800
HD MPEG-2 compression 15 6 60 600
As we can see, streaming video takes a significant amount of bandwidth. The higher quality video streams without compression quickly overwhelm the more common 10/100/1000 based ethernet networks in residential and commercial markets. Even with MPEG-2 compression methods must be used to restrict or control the end users ability to burden normal data networks with streaming video sources.
Field Note: Desktop Systems
Delivering ever higher bandwidth to a desktop personal computer or workstation may not be the best solution to speed up the users perceived network access. Small, stand-alone computer systems do not utilize off-load processors to handle the constant I/O bandwidth presented by a network connection. It is a gross rule of thumb that for every Kilobit presented on a network adapter the stand-alone computer must devote 1 Megahertz of clock speed in bit and packet interpretation, interrupt handling, and application presentation. VPN, SSL and other application handling may even require more processor clock speed.
  1. 1Kbps requires 1MHz for applications and network
  2. 500Kbps requires 500MHz for applications and network
  3. 1Mbps requires 1GHz for applications and network
  4. 10Mbps requires 10GHz for applications and network
  5. 100Mbps requires 100GHz for applications and network
  6. ...etc.

Also, if the stand alone computer is used only for end user presentation network then bandwidth speeds above 1Mbps may be excessive. As always, a users workload truly determines what their processor and bandwidth requirements are. We have found that most internet users are sufficiently supplied with a 500MHz or better PC and with dedicated badwidth of 500Kbps.

Field Note: ISP Recommendations
Most internet service providers (ISPs) use some basic rules of thumb to determine how much bandwidth they need to support their online customers. For rules of thumb, an inactive connection requires no bandwidth so it is not considered. Only active customers at a given instant in time are important bandwidth determination factors. We have seen several ISPs use the basic rule of thumb that 25-27 active users require a T1 (1.544Mbps) connection. If your ISP only has 10% of its users active at any one instant in time then this T1 can support 250-270 subscribing users. How does one in the residential market reconcile a T1 speed of 1.544Mbps at $800+ per month and a Digital Subscriber Line (DSL) at $30 per month? Who is getting the better deal? All consumer based services are a shared pipe resources. A consumer DSL line may be rated at T1 speeds but at some point in the pipe's path you are sharing the bandwidth with other users and it is being delivered in an asymmetric rate. A consumer may well get delivery of a T1 speed at the instant they request it; but, it is not guaranteed. A T1 line is a dedicated symmetric path that is not shared with any other user and is dedicated to the bandwidth path from the ISP to a major Internet connection point. One should never compare the speeds of an asymmetric service offering to a symmetric service offering based upon bandwidth speeds alone even though the above chart is arranged to suggest you should. A dedicated bandwidth at any comparable speed will be a better service offering if cost was not an object.

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