Top 10 questions to ask your network satellite service
| Added: 25-06-2010 Author: Bob Exum Category: Broad-Band Internet |
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The problem is that many business professionals and workers, emergency services have a full understanding of the peculiarities of business and satellite communications via satellite, and why do they? Satellite communications is not their profession. In an effort to satellite internet provider there are several questions that should be ready before you get stuck in a request that the service contracts won t meet your needs:
1) Do you have previous Non emptible satellite space segment?
Satellite operators such as Ses Americom, Intelsat, among others lease space segment satellite providers. There are various levels of protection are available in different price ranges. Most service providers will choose the contract before emptible space segment because it's cheaper and they can make profits that they can pass or end user. Pre-emptible segment provides satellite operator's position to deny access to the satellite providers in terms of council equipment failure, or to make room for providers who are willing to pay before emptible Non-Reporter.
While major disasters such as storms in the U. S. Gulf in the year 2005 before emptible many segments of the satellite's position and paid to the government request to leave the room-service satellite providers and others do not have access. If you are considering a contract to provide services for disaster recovery applications is to find recommended that service providers must ensure that the previous contract for Non emptible space segment. Provider should be able to provide proof of their service agreements, and asked whether the operator. You can pay a little more each month for your services before non emptible, but at least it will be available when needed.
2) What is your Over Subscription Ratio or friction?
Satellite service providers that provide Internet operating system that uses TDMA (Time Division Multiple Access) based systems. A TDMA Common system area controlled by the central command center that the rural units in the field to send their data center when ready to receive it. This allows for many units of the same distance Bandwidth Slice improve overall system efficiency. Transmission of the rural units ordered in a very high level, many times per second, which seemed to make the service to continue.
However, more units to be added to the service system will be slow. True business-level operators never allow their opinions or 20:1 ratio essentially does not exceed 20 terminals per segment Bandwidth. Many operators that offer services under the bridge to join them on their systems as high as 40, 80, 120:1 or more. Some operators do not have clear information that they are ready for the end user. If the provider will not tell you their contention ratio, you may consider looking elsewhere if their ratio is likely to end. This will be one which affects the quality of care you receive. Operator level and the friction ratio less than 20:1 or more to the cost of their services because only a few users have the space segment of their contract. However, to get what you pay for.
3) Does your system latency, and no equipment or software with TCP / IP acceleration?
Transport any IP platform will be some latency of the system structure. Latency is usually measured by how long it takes for the TCP / IP Ping sent to the server side of the restored transport links to link back to the point of origin. Satellite systems, because the physics involved will be very high so that any data latency terrestrial link. Data is transmitted to the satellite with the speed of light, or 186.000 miles per second. The satellite is 22.223 kilometers above the equator.
Ping for the round trip to go to the satellite, back to the server, to a satellite and back to starting point. This is the average round trip of 88.892 miles. When calculating the speed of light, in a world full round trip would take about 448 milliseconds. When you add in the coding delays and processing delays that you can add data to 100-250 milliseconds. On efficiency, the system Ping round trip should take between 550 and 700 milliseconds (225 ms one way in each direction).
Many under-class system will return the market today, especially the Ping times in 1200 milliseconds or more, which is very slow to allow some software functions the application. Some operators have added a system TCP / IP devices to their products more quickly. This can be a device or software solutions. Accelerate TCP / IP has a prevalence as the truth is that sexual already as fast as possible, the speed of light. Achieved faster by changing the TCP protocol with a more efficient way of allowing for transmission over high latency networks such as satellites. You can very quickly increase the speed of loading web pages, it is expected that a product. Many products can not be packaged as a VPN-speed data's, but the system still must pass the data, but more slowly. Be sure to ask whether the system more quickly or products included.
4) Does your system supports VoIP, VPN, with Streaming Video transmission?
If you have several applications that you intend to run, be sure to ask whether or not the application is supported on the system. VoIP (Voice over IP) phone for connectivity is to be very common in satellite communications. All types of users of emergency services are asking for telephone connectivity business continuity. What worried many prospective VoIP users via satellite is that the latency will be too high for effective voice communications. This has been confirmed and largely untrue. In fact, many cellular respiration phone system as we have many or more delay in their system from VoIP via satellite. Most satellite providers will help this system, but as the system's latency is more than about 800 milliseconds, you can see the difficulty in conducting a conversation. Some VoIP service providers also sell the equipment. If you choose to buy from them, or about yourself that you'll want to make sure the equipment with a good voice compression.
Shelves of some VoIP systems are not designed for use with satellite will occupy between 40 kbps and 90 kbps of bandwidth to complete each call. If 128K to buy a satellite uplink bandwidth can consume all the bandwidth for one or two phone calls, do not leave the Internet to your computer. There is compression of the available VoIP system that has been designed for use on satellites that use as little as 8 kbps telephone and telephone toll quality. There's even a compression system that will allow T1/PRI connections of less than 1544 kbps 256 kbps satellite bandwidth. You may also want to ask about access to the PSTN (Public Switched Telephone Network). When the signal ground in the center need to connect the VoIP traffic to the phone line. Some of these service providers will offer to costs, some are not giving at all, so be sure to ask. If you need to run a VPN over the system to remember that speed is not possible that the satellite.
VPN can be much faster for the equipment out, but usually to provide the customer equipment. There are several systems, most high-end customers, VPN support, it is not at all or no additional cost be sure to ask. That goes for video streaming transmission from the device, or web cam. Video stream is very large and Bandwidth many application service providers have dedicated bandwidth for these applications. Bandwidth is dedicated price will be substantially higher than the consumer price ratio with a 100% of the bandwidth 100% of the time. If you plan to do streaming video, received some recommended sites that stream video via satellite to a server, and allow other users to stream from the server. In this way there is only one stream of life in which the satellite bandwidth expensive.
5) Do Cir micra or services?
Cir (Developing Information Rate) and micra (Promotion Rate Assignment) is different for the acronym. This dedicated satellite bandwidth is usually required and the provider if you intend to high bandwidth applications like streaming video working via satellite. Many levels of business service providers to provide Cir / micra package, many consumer-level operators don't. The price of this service will be greater than the proportion of shared services, so be prepared. Some providers also require Cir / micra for VoIP services. Be sure to ask if this is something you need, because some operators may not volunteer this information until s too late.
6) How many public IP addresses I get?
Level of service many consumers do not know, or a static IP address you are using a public. This is essentially why don t support services such as VoIP and VPN. Provider of enterprise level typically provides at least one address, some provide more. Many providers will give you a permanent address and the service and respect you if you want additional static IPS. This is recommended way to prevent additional costs to use your own router on the system and talk your own address. Some systems will not help to talk so be sure to ask if this is what you need.
7)Do you have a FAP?
A FAP or Fair Access Policy is a set of rules that you agree with the contract for their services. They also include some service constraints. Read these policies carefully as if it is a similar service providers that can use your search. Some providers will meter throughput on your system. If you reach a certain level of use, typically recorded in kbps, Mbps or they can search your Bandwidth minimum, or service cuts until the next billing cycle. Very difficult to measure their own use because most people have no idea how many kbps is sent or received while loading a web page. FAP is also where the mantra will drive the law on the use of applications such as video streaming and VoIP. It goes on well document toothed Camb. Is in your best interests.
8) What will be the real test my broadband speed?
The service provider will sell the special rates you have plans or restore the data rate uplink and downlink data or advanced level. This is usually expressed in ways as sometimes 128/512 or 512/128. Always a large amount before the downlink channels is if your users. Many providers will not tell you that the speed of broadband, including IP overhead. Every system of the Internet as a satellite or terrestrial uses IP protocols that require the bandwidth for IP traffic. Overhead because you can expect that the real test of your broadband speed will be a charge of almost 20% less than what you pay for. True broadband speeds can be measured by running speed tests from a PC via a satellite link.
If the provider of their own speed test server in the center of this location will provide a more accurate test of the satellite link than the speed of Internet-based servers. Internet-based servers are too many variables to get accurate results from the data transferred through connections that are not under the control of you, or will exist. Many systems will be equivalent to using IP overhead, but be careful this time to purchase your services. If you don t think that broadband speeds will be high enough when you factor in 20% overhead you can imagine the level of care plan.
9) Pricing Plan what you offer?
In your search providers are likely to meet with many price plans. Each provider will create pricing structures that fit with their business model, and it will give them their competitive advantage. For this reason, you may find it difficult to compare prices. All providers will offer full time care plans 24x7x365. Some programs also provide for the use, and some will sell every day or plan Ravens. There are even providers that sell the fixed number of days each month. These programs can be interesting if you could not use a system designed for disaster recovery every day of the month, so why should pay for full-time service? If you are a service provider to compare prices and easy to see the level of their time to determine the full costs. However, remember that the basic service price they charge for their satellite space segment. If they are charging less likely because they do not have a pre-T non emptible chance or because they work with high contention ratios, or both.
10) What other services such as terrestrial connectivity and collocation?
Be sure to ask the value of the services and combination of words such as terrestrial connectivity. Unless you just buy the internet and do not need VoIP, streaming, backup or data, may be needed the service. Some providers will offer connectivity to the telephone network, and some will not. If you need a dial tone may wish to contract for it, too. For disaster recovery solutions is strongly recommended that you set your dial tone from a safe distance from the affected area.
In many cases land disasters connectivity including cellular respiration to will not be available. It is important that this be taken into account when designing a network administrator. Some providers also offer satellite services to support an organization or government data center servers at satellite locations. This is a benefit for the customer as a whole provides a valuable site data storage and easy access to data via satellite when most needed. A satellite center and facilities collocation can be a powerful tool, and should be considered when contracts for satellite services.
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