Technically speaking- a conventional check can come in numerous forms. If I remember correctly- all it has to include is a properly formatted routing-number, the "pay to the order of", a signature, the amount, and maybe a memo line for your Verizon account number. I have had friends send bricks, bowling pins, and old shoes with this information included using a felt pen at various points in time. Each time it was accepted as legal tender.
Well, depending on the make and model of the switch, the DS-3 interfaces could be rather spendy. We have 4 such Cisco 6500 series modules at my day-job. Together they cost upwards of $100K US 3 years ago.
Someone mentioned tracking by MAC address... an OC-3/DS3 is a channelized TDM line. 28 DS1 channels of serial data. This is below IP layer. The only identification is going to be a serial number. This will only matter if someone attempts to connect it with a service contract with the manufacturer.
Someone at least knew what to take. They could very well be one of the most expensive pieces of WAN hardware for their size and weight (often no larger than an average book).
It appears that/. might have taken the Oregonian a little too seriously. The article chronicles the ideals of a singleprivate school in Hillsboro. The Oregonian is not always representative of average people in Oregon. People who live in the Northwest know this. I am a daily reader of the local rag just the same.
As a network administrator at Portland Public Schools [a public school system of 100 public schools in Oregon], I can tell you that this is not what's happening in average schools here. Far from it.
Everyone is demanding computing tools for the children to use. The school systems are having a hard time providing the latest tools in a timely manner as the educational priorities do come first. Computing is used primarily to supplement curriculum here, not replace it. You would have a hard time finding a public school with less than a hundred networked computers here.
On the open-source front, the Portland-metro area has one of the larger linux user groups in the country. Hardware is provided to schools for free through organizations sponsored through donations by technology companies (StRUT is one such organization). There are two groups using this hardware to develop the Linux Terminal Server Project into the backbone for K-12 computer labs.. This was mentioned briefly at LinuxWorld last September.
I bought one of these cards back at LinuxWorld. The hardware's nice, they don't work exactly as advertised though.
The bundled kernel module only works with the stock kernel distribution in RedHat 6.2-7.1 (kernel 2.4.2 max). The kernel module sets up a virtual network device that allows the host pc to talk to the slotserver. The kernel module needs to run on both the host and the card to be able to communicate with each other localy. (You can still communicate via the 10/100 interface over the network.)
Another thing they advertize is the ability to have the card boot off of the host computer via a "virtual disk" (rather than having IDE drives hanging off of the card). I have't been able to get this working at all - and the only documentation available tells you that the feature exists.
It would kind of suck to have a PC loaded with 4 cards and 4 additional disks. I could sell a kidney and purchase some disk-on-chips I guess.
I built a set last weekend... with currently available LED's. An entire string of 100 takes
only 4.3 watts (as compared with the small incandecent sets that take 210watts/100).
The voltages at which a standard LED operates
would allow for 70 lights/segment (as compared
with 50 incandecent bulbs/segment).
--
Downsides include:
The cost. LED's can cost anywhere from $.12 to
$.30/each for high brightness ones (in quantities
of 1000).
As LED's are solid state devices - all the LED's
need to be oriented with the same polarity for
the string to function at all.
--
I built a string of 100 using a dead incandecent string (containing two segments of 50 bulbs each)
using red,green and yellow LED's, (2) 2000ohm resistors, and (4) 1n4007 diodes as a bridge rectifier. It requires only 36mA for the entire
string.
Slashdot Mirror
Technically speaking- a conventional check can come in numerous forms.
If I remember correctly- all it has to include is a properly formatted routing-number, the "pay to the order of", a signature, the amount, and maybe a memo line for your Verizon account number.
I have had friends send bricks, bowling pins, and old shoes with this information included using a felt pen at various points in time. Each time it was accepted as legal tender.
"shipping charges may apply"
Well, depending on the make and model of the switch, the DS-3 interfaces could be rather spendy. We have 4 such Cisco 6500 series modules at my day-job. Together they cost upwards of $100K US 3 years ago.
Someone mentioned tracking by MAC address... an OC-3/DS3 is a channelized TDM line. 28 DS1 channels of serial data. This is below IP layer. The only identification is going to be a serial number. This will only matter if someone attempts to connect it with a service contract with the manufacturer.
Someone at least knew what to take. They could very well be one of the most expensive pieces of WAN hardware for their size and weight (often no larger than an average book).
It appears that /. might have taken the Oregonian a little too seriously. The article chronicles the ideals of a single private school in Hillsboro. The Oregonian is not always representative of average people in Oregon. People who live in the Northwest know this. I am a daily reader of the local rag just the same.
As a network administrator at Portland Public Schools [a public school system of 100 public schools in Oregon], I can tell you that this is not what's happening in average schools here. Far from it.
Everyone is demanding computing tools for the children to use. The school systems are having a hard time providing the latest tools in a timely manner as the educational priorities do come first. Computing is used primarily to supplement curriculum here, not replace it. You would have a hard time finding a public school with less than a hundred networked computers here.
On the open-source front, the Portland-metro area has one of the larger linux user groups in the country. Hardware is provided to schools for free through organizations sponsored through donations by technology companies (StRUT is one such organization). There are two groups using this hardware to develop the Linux Terminal Server Project into the backbone for K-12 computer labs.. This was mentioned briefly at LinuxWorld last September.
I bought one of these cards back at LinuxWorld. The hardware's nice, they don't work exactly as advertised though.
The bundled kernel module only works with the stock kernel distribution in RedHat 6.2-7.1 (kernel 2.4.2 max). The kernel module sets up a virtual network device that allows the host pc to talk to the slotserver. The kernel module needs to run on both the host and the card to be able to communicate with each other localy. (You can still communicate via the 10/100 interface over the network.)
Another thing they advertize is the ability to have the card boot off of the host computer via a "virtual disk" (rather than having IDE drives hanging off of the card). I have't been able to get this working at all - and the only documentation available tells you that the feature exists.
It would kind of suck to have a PC loaded with 4 cards and 4 additional disks. I could sell a kidney and purchase some disk-on-chips I guess.
-Andy
I built a set last weekend... with currently available LED's. An entire string of 100 takes
only 4.3 watts (as compared with the small incandecent sets that take 210watts/100).
The voltages at which a standard LED operates
would allow for 70 lights/segment (as compared
with 50 incandecent bulbs/segment).
--
Downsides include:
The cost. LED's can cost anywhere from $.12 to
$.30/each for high brightness ones (in quantities
of 1000).
As LED's are solid state devices - all the LED's
need to be oriented with the same polarity for
the string to function at all.
--
I built a string of 100 using a dead incandecent string (containing two segments of 50 bulbs each)
using red,green and yellow LED's, (2) 2000ohm resistors, and (4) 1n4007 diodes as a bridge rectifier. It requires only 36mA for the entire
string.
This one can. It killed the machine we tested.
:-)
Try it out and find out.