Having made calls using VoIP without issue for for ages I was baffled as to why out of nowhere I had been having lots of issues. Sound quality has reduced and latency issues have become markedly noticeable. Users on VoIP online forums in the US and other countries, such as France and Mexico, have been noting similar issues since last year. For a while Voice over IP might seem like a good deal for the average person, more established interests in the telecoms industry see it differently - and are doing something about it.
Consultation
Well aware of what has happened elsewhere the United Kingdom telecoms regulator Ofcom took the unusual step in February of announcing that it will look at the growing VoIP industry and report next month on whether new laws are necessary to protect it. The consultation document says: “VoIP service providers have expressed concern that their ability to provide a reliable service may be impacted by internet access providers (ISPs) selectively degrading or blocking their VoIP traffic.”
Ofcom says it has no evidence this is happening in the UK; only about 000 customers use it. But the prediction is for that to go up by 4m in the next six months.
And VoIP barring takes place in other countries, more often than not those where there is still only a single incumbent telecoms company. In Saudi Arabia, for instance national carrier Saudi Telecom is using software from US supplier Narus to block all Voice over IP phone calls.
Telcos in the United States as well as other countries are hesitant to have their bandwidth used by traffic from which they earn no revenue and have been challenged over similar alleged incidents of VoIP blocking. Barring VoIP traffic is a challenge but not illegal and barring precise kinds of internet traffic is going up.
The European based VoIP giant Skype who are now owned by the pre-eminent auction site eBay has been particularly controversial. Skype is used by over 75m people. But not everyone wants Skype on their network.
Skype is considered by a lot of people to pose a potential security threat because it creates an encrypted channel out of the network and forms supernodes that sit on it and set up VoIP calls. There is big debate about how much bandwidth such supernodes eat up. There have been claims that in supernode mode, Skype could possibly saturate a 100 Mbps line.
Just a time ago it looked like powerful laptops were only being produced by a few niche brands and were built to spec, not produced in big numbers. For the manufacturer they were highly profitable even though not selling in many quantities. I am pretty certain people would have liked to have owned one but could not actually justify it. Basically they were the best laptop computers available for purchase. Regardless of whether that was true I think the prices were so high that we would buy laptop computers that were not as powerful instead. I believe things are already different though and will continue to because the larger companies are all getting into the market.
They know there is revenue to be taken here. They could command the sector. With laptop computers becoming like consumer electronics this is an excellent profit stream for them. Also they know they can induce prospects to buy laptop computers like these more easily than small resellers. Small companies definitely have an uphill battle now. Now prospects will have increased options it makes it challenging for the small resellers. Purchasers will additionally gather a lot more peace of mind when paying a larger amount of cash.
The companies latest notebook computers are getting a large amount of awards as being the best laptop computers from the magazines. I guess that small resellers could still have a chance. I don’t believe people will prefer to have a similar specification like everyone else in this form of market. These kinds of prospects generally are well educated in the technology and would compare spec for spec. Sometimes the specifications mean a lot a more than the style for these sort of purchasers.
All of this is really good from the consumer’s standpoint. Eventually high end equipment for your money will be the result of this change. Who is to predict what will happen. I am in fact not sure anymore. New systems are always being launched and these latest systems usually ask for high prices. It’s hard to know what will take place now that the established brands have become involved in making gaming laptops.
Check out http://www.rizeon.com/gaming_laptops/page.php because they are giving a couple of extremely good laptop computers for the money.
Notebooks seem to be the current in thing this year. Taiwan, which is the chief manufacturing country of laptops is having trouble with the demand at the moment. Whatever happens in the market place this demand for laptop computers only seems to be going up. New products are popping up all the time that litterally create new sectors in the laptop computer business.
More consumers are purchasing laptops for gaming these days. If you’re a gamer with a limited budget the good thing is that you can get a gaming laptop a lot cheaper now because the expected life is declining. Gaming laptops are no longer laughed at by serious game players because they are actually fairly good. Some of the annoyances like heat and noise still exist to an extent but barely in the mainstream notebooks. The cases are also pretty sleek. Ok so there remains a difference in performance no matter how advanced gaming laptops have become but that should always remain. Could gaming laptops ever get razor thin? I think this is a niche to observe.
Speaking of gaming laptops, the greater alternatives are attainable when they are custom built. With tier 1 companies you typically don’t have an idea what they fit into the notebook computer. It just provides the end user added flexibility when it all boils down. Premade notebook computers are targeted at consumers who have like minded needs and that may not be you right? A custom made notebooks fixes. Manufacturers who provide custom laptops typically give a more personalised and local support as well. This is also an additional big selling factor.
Next gen laptops do seem like a tantalising proposition. Basic ultra mobiles are the in trend. Plenty of comparable devices have already come out at an ashtonishing speed. Consumers would like to see big screen ultra portables if that sounds right. If we overlook processing power I’m sure we’d witness those versions of laptops today. Consumer trends imply that gaming laptops will get increasingly thinner in the next couple of years. I really can’t guess what to expect aside from those ideas spoken of. Some company designing a product to be unique in a saturated market.
In my opinion Rizeon have the best laptop computers in terms of value for money.
A common problem with hard drives is the error message “MISSING OPERATING SYSTEM.”
Typically what this means is that critical data is missing or damaged in two possible locations. The first is the Master Boot Record (MBR). This data area contains error messages and pointer information that specifies the location of the second critical data area, the Volume Boot Record (VBR). The VBR contains the operating system specific data for the format of that particular partition on the drive. If either of these two critical data areas is damaged, by a virus, controller failure, etc., then the drive will not be accessible through the operating system.
The normal response to this error message is to boot to a floppy disk and to re-partition the drive (probably using FDISK) and thereby totally removing any possibility for recovery of the data on that drive, except by dedicated data recovery software or a data recovery facility. If applicable, the following technique will help save time, money, and frustration.
The first step to data recovery (covered in great detail in the first article of this series) is to verify the location of the existing partition information. For the purposes of this article, it will be assumed that the FAT structure and the root directory are intact, there is only one partition, and that only the MBR and the VBR were damaged. Using Micro-Scope, enter the Fixed Disk Editor menu and select the fixed disk that is being repaired. Using the Find menu option, locate all the sectors that contain the string “55 AA” (see Step Four of the first article in this series), and then verify that the FAT structures are intact (see Step Seven). Note on a scratch paper the values (in Cylinder, Head, Sector format) where this string appears. These values will be used later in the reconstruction process.
Rebuilding the MBR
Using the Fixed Disk Editor in Micro-Scope, locate and read Cylinder 0, Head 0, Sector 1. This should be the location of the corrupt Master Boot Record. Press “M” to modify the sector and enter 0’s for the entire sector, effectively wiping all the data from this sector. Press ESC, then “W” to write the data, and “Y” to confirm the write operation. Then exit the Fixed Disk Editor and select the Rebuild Master Boot Record menu option. Press “Y” to confirm this operation. The fixed drive now has a completely corruption-free MBR available for use during the reconstruction of the VBR.
Rebuilding the VBR
There is a simple method for rebuilding the VBR. Copy the data from a like fixed disk or a similar-sized fixed disk with the identical operating system (the versions must be the same.) There are two approaches for obtaining this data. The first is to install the second drive in the system, reboot Micro-Scope, and copy the sectors directly from the “healthy” drive to the drive being reconstructed. The second method is to copy the sectors from the “healthy” drive to a floppy diskette and transfer that diskette to the machine containing the drive being reconstructed. The data can be copied to any sector on the floppy disk. Just note where this data is stored on the floppy disk so that it may be easily retrieved when copying it back to the drive being reconstructed. In either case, the VBR is located at Cylinder 0, Head 1, Sector 1 on the “healthy” drive. Copy this data to the same location on the damaged drive. Exit the Fixed Disk Editor.
The drive now has a clean MBR and VBR, and with a few modifications to the values stored in these data areas, the drive will be fully reconstructed.
Access the VBR in the Partition Editor. Some of the values in this area will remain the same. These are: Bytes Per Sector, Reserved Sectors, Number of Copies of FAT, Max # of Root Dir. Entries, Media Description Byte, and Volume Boot Signature. Sectors Per Cluster may or may not need to be changed. Put the cursor over this value and press F1 for a formula that will help determine the proper value. Use this same F1 procedure for determining the Total Number of Sectors. This value should be the same as the value for Number of Sectors in the partition table.
The Sectors per FAT value equals the number of sectors from the beginning of the first FAT to the beginning of the second FAT (as described in the first article in this series.) The values for Sectors per Track and Number of Hidden Sectors should be identical to the values in the MBR. The Number of Heads is either the same as the value in the MBR or the same as the value of the Number of Heads in the partition table plus one (refer to the first article in the series for more information on this topic.) After completing this information, the drive should either be bootable or accessible via a bootable diskette. If this is not the case, e-mail the Technical Support department for further verification of the problem.
Reconstructing Multiple Partition Volumes
In some cases, the drive may have been partitioned into smaller, logical partitions. If this is the case, the chance of this data being corrupt is slim, and correct Head and Sector values are readily available from these areas. To find the second partition on the drive, use the Fixed Disk Editor in Micro-Scope to view the sector containing the “55 AA” string. This sector should appear after the first VBR, so don’t confuse the two. The second MBR should start on Head 0, Sector 1 of a given cylinder. Accordingly, the second VBR will appear on Head 1, Sector 1, and the FAT on Head 1, Sector 2, etc. By adjusting the first MBR in Micro-Scope so that the value for Starting Cylinder, Head and Sector is equal to the location of the second MBR, the VBR is now accessible through the Micro-Scope partition editor. Use these values to reconstruct the second MBR. The only value that will need recalculating is the Start Absolute Sector in the second MBR.
As outlined in the first article in the series, the Start Absolute Sector is the same as the value for Ending Sector. This is not the case with a second partition. The Start Absolute Sector is the number of sectors prior to the VBR. The formula for the Start Absolute Sector is as follows: (Number of Sectors) + (the Start Absolute Sector of the previous partition) + (Sectors per Track). This formula will work for any additional logical partitions.
If, during partition reconstruction, there is something not understood, e-mail the Micro 2000 Tech Support Dept. before making changes to the drive.
Disclaimer - The Micro 2000 Tech Tip is a free service providing information only. While we use reasonable care to see that this information is correct, we do not guarantee it for accuracy, completeness or fitness for a particular purpose. Micro 2000, Inc. shall not be liable for damages of any kind in connection with the use or misuse of this information.
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