Providers use shared bandwidth schemes in order to lower the cost of providing internet service. By predicting how frequently a channel will be used, they can split usage of expensive dedicated channels among multiple customers. Shared bandwidth systems typically cost the customer 1/4 to 1/10 as much as dedicated bandwidth.

Shared bandwidth is best suited to small business and home users, and sites supporting less than 30 users on a single VSAT.

Dedicated bandwidth is very flexible, and usually comes in a number of upload and download levels from 32kbit to 8mbit, depending on the hardware. It is also possible to purchase a dedicated channel and share it across a number of systems that belong to the same customer.

Dedicated bandwidth is best suited to large-enterprise customers such as Internet Service Providers (ISP's) and sites supporting more than 50 users on a single VSAT.

Some providers offer CIR on systems with shared bandwidth for an additional monthly cost. IraqSat only offers it on iDirect systems.

Terrestrial broadband services have faster round-trip ("ping") times, but similiar actual download rates. Geosyncronous satellites orbit at an altitude of 36,000 km. Because round-trip traffic must make this trip 4 times for each two-way communication, ping times are commonly 500-2000 ms as opposed to the 50-200 ms times seen in terrestrial data links. This means that every single web page loaded requires a minimum of 500-2000 ms to begin loading. However, the data rates are comparable - once a file download begins, it runs at speeds similiar to terrestrial traffic. This limitation is most visible when sending and receiving small data packets.

Because VSAT Internet Service is transmitted as radio waves through the atmosphere, it can be affected by weather conditions at the customer site, the Network Operations Center, and in space. Interference by solar wind and solar flares is a rare occurence, but does happen a few times a year for a few minutes.

Finally, the subscription cost for VSAT Internet Service is typically more expensive than terrestrial services. Terrestrial lines are subsidized by governments and have lower operating and install costs than expensive orbital communications satellites.

VOIP service through IraqSat VOIP requires 7 kbit upload CIR to guarantee voice quality. This price is specially noted on the iDirect pricing options.

To find the CIR needed for other VOIP, webcam, video, or other services, please consult the documentation for that service.

• Worms that flood the network seeking other PCs to infect, and infect them automatically due to a vulnerability in MS Windows. MS Blaster and its derivatives are an example.
• Spam-sending software that "zombies" a PC, causing it to send spam to potentially thousands of other people without the PC user knowing it.
• Microsoft Outlook viruses that spread via email attachments, causing Outlook to automatically mail copies to other user in your addressbook, MSN chat list, or at random. This mail may even be faked to appear to come from your email address or from someone else in your addressbook.
• Any virus that spreads over a network and consumes bandwidth.

All of the above viruses are detectable by a network scan by your ISP, and can result in your service being suspended.

Users who follow these steps will keep their network free of 99% of viruses.

• Run Windows Update regularly, and set your PC to automatically download and install updates.
• Install commercial antivirus software such as Norton AntiVirus, and set it update regularly and automatically.
• Install Lavasoft Ad-Aware and regularly scan for trojans, spyware, and other commercial tracking/spam software.
• Do not allow your users to visit software pirate warez sites, pornographic sites, or others that attempt to install "download accelerators" or other "tools" that infect the PC with viruses, trojans, or spyware.
• Consider browsers and mail readers that are less prone to viruses or vulnerabilities, such as Mozilla Firefox and Thunderbird. Avoid Microsoft Internet Explorer and Microsoft Outlook, or install third-party software that prevents pop-ups, bad javascript, and other vulnerabilities.
• Strictly enforce all of the above policies with mobile (laptop) users, who regularly carry viruses from one site to another, even causing virus suspensions and moving on without knowing it.

If you do not have access to antivirus software, try using the Trendmicro free online virus checker.

• Disconnect the affected PC from your network. If the entire network is affected, disconnect the entire network or power off the network switch.
• Use any of the above antivirus software to completely clean the affected PC, or group of PCs one at a time. If your virus definitions are not up to date, connect it to the network and update your virus definition, then disconnect the network again and run the virus scan. If you leave an infected PC on the network, you risk having your VSAT Internet Service suspended.
• Once clean, connect the PC to the network.
• Run Windows Update and a Lavasoft Ad-Aware scan.
• Repeat for each PC.
• If you do not find any viruses but have reason to suspect you still have an infection (for instance, if you have been suspended for virus traffic), consider scanning with different antivirus software or the Trendmicro free online virus checker.
• If your antivirus software finds a virus but cannot remove it, reboot Windows in Safe Mode and run the scan again.

It does not cover problems with the customer's local network or PCs, or any performance issue that is caused by these systems. This includes PC performance problems, viruses, disconnected or malfunctioning network hardware, or user error.

Customers are responsible for performing the first line of diagnosis on a problem. This consists of running through the tests in the troubleshooting guide, and reporting all requested information and answers to troubleshooting questions to customer support. Customer support will not schedule a site visit without a proper problem report that includes the troubleshooting steps.

Customer support will contact the customer and attempt to resolve or diagnose the problem remotely. A visit is scheduled only after these steps are taken.

If customer support determines the problem is related to the customer's local network, PCs, user error, or other non-VSAT problems, the visit will be charged to the customer. This includes any non-covered work a customer requests during a visit, such as configuration or repair of PC or network hardware. Minimum charge for a visit is $80, and may also include travel fees for customers outside the cities of Baghdad and Arbil. You will also be charged for long delays in search lines or for our team being denied entrance by gate staff.

Early termination of a contract is possible by prior agreement between IraqSat and the customer. Early termination for any reason may require a fee of up to 50% of the service fee of the entire subscription. Please contact us if you require service for less than one year.

When paying by any electronic means, please include your IraqSat invoice number or Site ID in the subject or reference line