General Communication services
ITV
satellite network is based on the DAMA technology (Demand Assignment
Multiple Access ) that means very economically usage of the satellite
capacity with perfect QoS. This give the possibility to provide high
quality services at very attractive prices.
This technology permits configuration like STAR, or FULL MESHED network
or combination between them. This advantage gives the possibi9lity to
configure any type of networks following the customer’s topological
and logical structure.
There is no restriction concerning the capacity. Satellite network can
handle more than 70 Mbit/s backbone capacity. ITV network may handle
clients like small offices to big corporate or government networks.
Network reliability is very high and it is about 99 to 99.9% which is
impossible to be achieved with terrestrial infrastructure where the
reliability is no more 75 %.
Satellite network is based on the SkyWAN® which is a MF-TDMA DAMA VSAT
system with a maximum of 8 frequency channels. Each channel has a capacity
of up to 5 Mega Symbols (8 mbit/s) , resulting in a maximum network
capacity of up to 70 Mbit/s. Frequency hopping among these channels
with different data rates and FECs is possible. SkyWAN® consists of
an Indoor Unit (IDU) and the Radio Frequency Terminals (RFTs). The IDU
is a packet switching device, which processes all IP and Frame Relay
Packets according to their priority. Each IDU contains one Ethernet/Fast
Ethernet port and up to four operational Frame Relay ports. Frame Relay
Access Devices (FADs) are attached to those Frame Relay ports in an
optimal way and provide a complete range of legacy protocols such as
serial line interfaces, HDLC, X.25 as well as analogue and digital voice
channels. The IDU is linked to the RFT via the L-band interface, thus
supporting broadband applications via satellite cost-effectively. RFTs
are available in C-band and Ku-band in various power levels, and will
be customized precisely to network requirements.
Functionality
The main functionality is the possibility for full integration with
the existing communication equipments and infrastructure of the customers
The network may be used as a main or backup according the customers
needs. Next important functionality is the International connectivity.
ITV may propose international links for data, internet, voice, IP telephony,
VPNs, video exchange etc. One of the points of the satellite backbone
is placed at LTN Telenet where the
international connectivity to the European main backbones takes place.
This permits to each customer to have direct access to Internet and
international connectivity including data , video, channels for worldwide
GSM roaming etc. MPLS based routing over the network, permits to have
QoS for the dedicated links to each end-user.

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