ILANG ILANG INTERNET

2006-08-10T22:51:00.000-07:00

Your DSL connection may sometimes encounter slowdowns due to the following reasons:
LAN or multi-user connections:
PLDT is responsible only for providing the DSL connection up to a single PC.
Virus / Spyware attacks:
Install quality Anti-Virus software and update definitions regularly. A virus infecting your computer will cause slowdowns.
Install/Upgrade required Service Packs for Microsoft OS. Windows XP users, in particular, often get Service Pack upgrades regularly.
Site Congestion:
The site you are visiting may be congested because many other people are connecting to it. Try visiting another website and compare the experience. Likely, the congested website will register much lower speeds than one that is not.
Upgrade Hardware:
Having low RAM (64MB or less) will often result in computer slowdowns. All of your applications, Internet included, will run much more slowly because of low RAM. It is suggested to upgrade your RAM to at least 128 MB, preferably 256 MB, to have the best Internet experience.
If you are unwilling to upgrade your RAM, try running only one browser at a time. Do not run any other applications while surfing. Also, try downgrading your Operating System to an older model, since older OS need less RAM than newer ones.
Low quality LAN Cards can slow down your connection. Consider contacting your local PC outlet for an upgraded or higher quality LAN card.
Make sure you have sufficient free hard disk space. Websites and files that you download are stored in your hard disk, which can result in a slowdown if you run out of hard disk space. Keep at least 100MB of hard disk space free, preferably 500 MB or even 1 GB, especially if you download many heavy files such as videos or music.
If you are running low on hard disk space, delete old files or transfer them to CDs. Purchasing a second hard disk may also help alleviate the lack of space.

DSL SPEED TEST

2006-08-10T22:33:00.000-07:00

What does this test actually measure?
This connection tests how fast your computer can load a Web page from the PLDT myDSL Website. It does not measure the speed of your ISP connection, but rather the speed at which the page is received and appears in your browser.

Why do other "bandwidth" meters give different results?

Bandwidth does not always mean the same thing, other meters measure how fast your connection is able to find a requested Website, or how fast you can send and receive email.

How do I determine if my results are good or poor?
Your results should be consistent and should not change dramatically. If you receive inconsistent results, such as a high number then a low number, you may be experiencing a problem with your connection.

UPCAT Weekend

2006-08-04T00:50:00.000-07:00

Going into the UPCAT weekend, i came across my batchmate, Aladdin Alima Lagura on my way to UP International Center. He is riding his big bike that i have just then seen. I tried driving it myself and its exhilarating to be driving such a mean piece of machine.

anyway, so much for that. its been a good week so far with no internet interruptions and it has been quite so far.

i'm going home to batangas for the weekend and let's hope many UPCAters fail to keep the myth of up excellence. hahaha!

Line 2 Router: Replaced!

2006-07-27T01:53:00.000-07:00

Attention: Internet Committee
(specially jajo soria)

I have replaced the router for Line 2 in view of the many cases of internet outages.
It is my hope that this change will help get rid of our problem of service interruption.

In light of this, may i enjoin you to please monitor your internet connections.
please take note of the time of the interruption and if possible for how long.

thank you and god bless!

How DSL Works

2006-07-26T00:54:00.000-07:00

Feel free to leave comments on this post.

When you connect to the Internet, you might connect through a regular modem, through a local-area network connection in your office, through a cable modem or through a digital subscriber line (DSL) connection. DSL is a very high-speed connection that uses the same wires as a regular telephone line.

Here are some advantages of DSL:

You can leave your Internet connection open and still use the phone line for voice calls.
The speed is much higher than a regular modem
DSL doesn't necessarily require new wiring; it can use the phone line you already have.
The company that offers DSL will usually provide the modem as part of the installation.

But there are disadvantages:

A DSL connection works better when you are closer to the provider's central office.
The connection is faster for receiving data than it is for sending data over the Internet.
The service is not available everywhere.

In this article, we explain how a DSL connection manages to squeeze more information through a standard phone line -- and lets you make regular telephone calls even when you're online.

Telephone Lines
If you have read How Telephones Work, then you know that a standard telephone installation in the United States consists of a pair of copper wires that the phone company installs in your home. The copper wires have lots of room for carrying more than your phone conversations -- they are capable of handling a much greater bandwidth, or range of frequencies, than that demanded for voice. DSL exploits this "extra capacity" to carry information on the wire without disturbing the line's ability to carry conversations. The entire plan is based on matching particular frequencies to specific tasks.

To understand DSL, you first need to know a couple of things about a normal telephone line -- the kind that telephone professionals call POTS, for Plain Old Telephone Service. One of the ways that POTS makes the most of the telephone company's wires and equipment is by limiting the frequencies that the switches, telephones and other equipment will carry. Human voices, speaking in normal conversational tones, can be carried in a frequency range of 0 to 3,400 Hertz (cycles per second -- see How Telephones Work for a great demonstration of this). This range of frequencies is tiny. For example, compare this to the range of most stereo speakers, which cover from roughly 20 Hertz to 20,000 Hertz. And the wires themselves have the potential to handle frequencies up to several million Hertz in most cases.

The use of such a small portion of the wire's total bandwidth is historical -- remember that the telephone system has been in place, using a pair of copper wires to each home, for about a century. By limiting the frequencies carried over the lines, the telephone system can pack lots of wires into a very small space without worrying about interference between lines. Modern equipment that sends digital rather than analog data can safely use much more of the telephone line's capacity. DSL does just that.

Asymmetrical DSL
Most homes and small business users are connected to an asymmetric DSL (ADSL) line. ADSL divides up the available frequencies in a line on the assumption that most Internet users look at, or download, much more information than they send, or upload. Under this assumption, if the connection speed from the Internet to the user is three to four times faster than the connection from the user back to the Internet, then the user will see the most benefit (most of the time).

Other types of DSL include:

Very high bit-rate DSL (VDSL) - This is a fast connection, but works only over a short distance.
Symmetric DSL (SDSL) - This connection, used mainly by small businesses, doesn't allow you to use the phone at the same time, but the speed of receiving and sending data is the same.
Rate-adaptive DSL (RADSL) - This is a variation of ADSL, but the modem can adjust the speed of the connection depending on the length and quality of the line.

Distance Limitations
Precisely how much benefit you see will greatly depend on how far you are from the central office of the company providing the ADSL service. ADSL is a distance-sensitive technology: As the connection's length increases, the signal quality decreases and the connection speed goes down. The limit for ADSL service is 18,000 feet (5,460 meters), though for speed and quality of service reasons many ADSL providers place a lower limit on the distances for the service. At the extremes of the distance limits, ADSL customers may see speeds far below the promised maximums, while customers nearer the central office have faster connections and may see extremely high speeds in the future. ADSL technology can provide maximum downstream (Internet to customer) speeds of up to 8 megabits per second (Mbps) at a distance of about 6,000 feet (1,820 meters), and upstream speeds of up to 640 kilobits per second (Kbps). In practice, the best speeds widely offered today are 1.5 Mbps downstream, with upstream speeds varying between 64 and 640 Kbps.

You might wonder, if distance is a limitation for DSL, why it's not also a limitation for voice telephone calls. The answer lies in small amplifiers called loading coils that the telephone company uses to boost voice signals. Unfortunately, these loading coils are incompatible with ADSL signals, so a voice coil in the loop between your telephone and the telephone company's central office will disqualify you from receiving ADSL. Other factors that might disqualify you from receiving ADSL include:

Bridge taps - These are extensions, between you and the central office, that extend service to other customers. While you wouldn't notice these bridge taps in normal phone service, they may take the total length of the circuit beyond the distance limits of the service provider.
Fiber-optic cables - ADSL signals can't pass through the conversion from analog to digital and back to analog that occurs if a portion of your telephone circuit comes through fiber-optic cables.
Distance - Even if you know where your central office is (don't be surprised if you don't -- the telephone companies don't advertise their locations), looking at a map is no indication of the distance a signal must travel between your house and the office.

Next, we'll look at how the signal is split and what equipment DSL uses.

Drawing for $50

2006-07-24T01:05:00.000-07:00

In an attempt to be in Cyberwyre's drawing, I'm posting this link

http://www.cwire.org/2006/07/16/50-for-your-link/

Let's hope the experiment works!.

DSL Defined

2006-07-23T02:38:00.000-07:00

Digital Subscriber Line (DSL) provides high-speed digital modem technology over a conventional telephone line.

DSL uses signal frequencies above those used by voice or fax, so the DSL signal does not interfere with telephone conversations or faxes. When a DSL filter is connected to your phone jack, its function is to split the data (Internet) traffic from voice (phone) traffic, and route them separately.

Voice traffic (talking on the phone and fax signals) goes to the phone or the fax machine, while your data traffic (surfing the Web, downloading large files or photos) goes through the DSL modem and then to your computer, thus allowing you to use both at the same time.

Digital Subscriber Line (DSL) gives you broadband access over your existing copper telephone wires. A DSL connection to the Internet is a high-speed, ‘always on’ (you don’t need to dial up your ISP each time you want to connect) connection that lets you use your telephone lines for making and receiving calls and for Internet access simultaneously.

DSL is also known as xDSL, with the ‘x’ standing for various kinds of DSL technologies. These technologies differ in the connect speed and connection

DSL FLAVORS

ADSL Lite (or G.lite) This is a lower speed version of ADSL and provides downstream speeds of up to 1Mbps and upstream speeds of 512 kbps, at a distance of 18,000 feet from the service provider’s premises. It is intended to simplify DSL installation at the user’s end.

R-ADSL The Rate-Adaptive Digital Subscriber Line provides the same transmission rates as ADSL, but an R-ADSL modem can dynamically adjust the speed of the connection depending on the length and quality of the line.

HDSL The High Bit-Rate Digital Subscriber Line provides a symmetric connection, that is, upstream speeds and downstream speeds are the same, and range from 1.544 Mbps to 2.048 Mbps at a distance of 12,000–15,000 feet. Symmetric connections are more useful in applications like videoconferencing, where data sent upstream is as heavy as data sent downstream. HDSL-II, which will provide the same transmission rates but over a single copper-pair wire, is also round the block.

IDSL The ISDN Digital Subscriber Line provides up to 144 kbps transmission speeds at a distance of 18,000 feet (can be extended), and uses the same techniques to transfer data as ISDN lines. The advantage is that, unlike ISDN, this is an ‘always on’ connection.

SDSL The Single-line Digital Subscriber Line provides symmetric transmissions at rates similar to HDSL. The difference is that it uses a single copper-pair wire to do so (while HDSL uses two or three), and operates at a maximum distance of 10,000 feet from the service provider’s premises.

VDSL The Very High Bit-rate Digital Subscriber Line is the fastest of all xDSL flavors and provides transmission rates of 13–52 Mbps downstream and 1.5–2.3 Mbps upstream over a single copper-pair wire, at a distance of 1,000–4,500 feet from the service provider’s premises.

The ADSL and HDSL are very common in use, the former being more popular for home usage.

UP International Center is using ADSL courtesy of Philippine Long Distance Telecommunications (PLDT).

PLDT SPEED METER

2006-07-19T03:43:00.000-07:00

As of July 19, 2006 6:30 PM

Ilang's DSL Speed is 208.9 kbps. It's a little slower than your normal DSL cable which is running at 256 kbps or more.

Dial-up: 53.3kbps
ISDN: 56kbps
DSL/cable: 128 kbps
ILANG is here: 208.9kbps
DSL/cable: 256kbps
DSL/cable: 512kbps
T1 Line: 1500kbps

the good thing is all wings have connection. the bad news is, its gonna be war for bandwidth.
Enjoy!

PC INTERNET CONNECTION

2006-07-18T22:53:00.000-07:00

The following residents are up for room visits:
Desilu Alisa Lazaro of Room 136 is up for PC connection.
Her cable would be coming from room 135.
Paula Editha Pulido of Room 205 is experiencing trouble with her IP Address.
Also, her Internet connection is erratic. ("Cannot find server.")

-----------
Per Ms. Lazaro's instructions, her PC will be connected ASAP.
She was out the last time I came by her room.
Her available time is as follows:
W- 4:00 to 5:30
MTh- 10:00 to 11:30
T- 1:00 to 2:30
F- 1:00 onwards
-----------
Ms. Pulido's case however is complicated. Her wing is connected to our DSL line that is as of the moment behaving quite erratic. Our DSL Account 2055710atpldt has intermittent connection hence her complaint of the usual "Cannot find server" error message.
Outside of making sure her IP Address is unique, there is only so much I could do. The rest is up to PLDT.

DSL Difficulties

2006-07-17T04:00:00.000-07:00

One DSL line is experiencing difficulties...
We are doing our best to put it back online as soon as possible.
Please bear with us.
- Ilang Internet Committee

Your Friendly Internet Technician

2006-07-16T01:29:00.000-07:00

For complaints and other Ilang-Internet Related matters:
Contact me at HEHERSON@GMAIL.COM