VSAT networks can be arranged in point to point, star, mesh, star/mesh, and broadcast configurations. The preferred arrangement depends on the kind of information flow the network will service.VSAT networks come in various shapes and sizes ranging from star data system users with one site connected to an operator's shared hub to many thousands based on a dedicated facility located at their own site.

There are three basic VSAT transmission types: TDMA, time-division multiple access; DAMA, demand-assigned multiple access; and SPCP/MCPC, single/multiple channels per carrier. Interactive VSAT systems come in two main network topologies - star and mesh. The former tends to be based either on a shared access scheme (TDM/TDMA), which is designed to support transactional processing applications, or on a dedicated link (the satellite equivalent to a leased line).

vSat satellite products are a stand alone solution requiring no traditional internet connection method. A connection via a LAN port on the vSat subscribers computer is made to the Sky Edge decoder which is connected to the satellite dish. Internet requests are made by the subscriber bouncing of an orbiting satellite Bordernet's earth station hub. The hub then delivers the internet request back to the subscriber at broadband speed.

For standard home and business connections, inbound speeds from your premises to our servers are set at either 64k or 128k. Download speeds of 256k and 512k are set back to your equipment. Speeds can be increased for larger corporate users.

Industry professionals use many technical terms and acronyms to describe the various components of VSAT hardware - IDU, ODU, OMT, antenna, etc. For a list of common terms, see our Knowledge Base article, VSAT Terms and Acronyms.

Real bandwidth efficiency in a demand-assigned (DAMA) satellite system is a complex matter; it depends not only on the physical-layer properties of the transmission scheme such as modulation and coding schemes and carrier spacing. Additional factors that must be taken into account include efficiency of use of the allocated capacity, efficiency of capacity scheduling (i.e., can the system actually allocate the available resources when demand exists) and responsiveness to changes in demand.

Dependent on network configuration and site location within the satellite's footprint, a dish will normally be 1.8m in diameter. Either a flat roof with space and strength to hold a 1.8m dish or a ground mount will be required. If this is not available a vertical wall strong enough to mount a bracket holding the dish will be required. In both cases line of sight with the satellite is necessary.

Service for all VSAT systems sold by IraqSat is by one-year agreement. Customers are billed in 3-month installments. However, you may not terminate service by failing to pay after only 3, 6, or 9 months. In such a case, billing continues but we will suspend service until the subscription is payed. Early termination of a contract is possible by prior agreement between IraqSat and the customer.

Yes. Bordernet has successfully demonstrated that our vSat products are metro comparable in speed and cost and therefore a HiBIS government subsidy is available for this technology for people in rural and remote areas that CAN NOT GET ISDN or ADSL services. If you can receive ISDN, an iSat subsidy may be available to you. The vSat subsidy payment is used to pay for 100% of the cost of equipment, installation at your premises and a reduced rate per month to the subscriber.

The system is independent of any terrestrial telecommunication infrastructure, eliminating possible multiple points of failure. Instant internet access as connection is direct from the satellite providing real-time instant responses.

Advantech Satellite Networks, or SatNet for short, is the market leader in DVB-RCS VSAT hub and terminal equipment. DVB-RCS is an open standard, which allows widespread growth through the supply of terminals and hardware from a number of suppliers.

DVB-RCS is the only truly open standard for VSAT systems; it forms a two-way extension of the long-lived DVB-S standard and the recent DVB-S2 standard which are used for satellite broadcast. Several vendors, including SatNet, have invested substantially in DVB-RCS developments in order to produce cost-effective solutions that are in themselves very competitive with non-standard offerings.

Aside from any technical and performance issues, the user of a proprietary system is inextricably tied to one specific vendor, with little recourse when this vendor fails to meet the technical and commercial objectives of the system operator.