In recent years, there is a growing need of large enterprises in the creation of an extensive corporate networks of central offices with branches in the country. Today not only stable data transmission is required, but also high-quality telephone services, video conferencing, Internet access. Due to the absence in many parts of terrestrial communications, to solve these problems it is necessary, and sometimes the only possible solution is to use satellite communications.

I FIXED-SATELLITE

Balkansatcom offers clients the following solutions for building enterprise networks:

THE CORPORATE NETWORK WITH MOBILE STATIONS

Many clients put the tasks of building local corporate networks with mobile stations. A typical example is the company, as a rule, the oil sector, which requires corporate network linking the central office with developed fields. The use of VSAT terminals with antennas of diameter 1.2 and 1.8 meter allows you to move quickly the station within the coverage area of the satellite used without conducting costly and sometimes long-term licensing procedure.

RESERVE CORPORATE NETWORK

One of the most important parameters of the organization of the corporate network is its reliability. But even networking on terrestrial channels can not guarantee 100% reliability. One of the most effective ways to improve the reliability of the organization is a backup satellite network.

Organization of corporate network backup allows you to backup not only the entire network, but also some of its directories. Reserve network resources can be as involved with the core network congestion. Since the overall network capacity can be allocated efficiently among the directions, the resource may be significantly smaller than the main resource. Thus the costs of operating the reserve network is usually low and can be significantly lower than the damage associated with the failure of the primary network.

ASSIGNING NETWORK

Satellite channels are perhaps the only way to rapidly establish a fixed zone network connection with providing connection points in all urban areas. Despite its compact size and low cost, VSAT terminals described networks provide higher bandwidth and support different types of interfaces and signaling.
Satellite terminal installed in a single day and provides a point of attachment zonal operator in a particular locality. In addition, the terminal can be used to provide services for telephony and data services to the population and organizations. Moreover, even if there is a terrestrial channel to the connection point, satellite communications is the perfect solution for backing up the channel and perform "Requirements for construction of the public communication network."
· Antennasof1,2..1,8 meters;
· Central office capacity is above 70 Mbit/s (one carrying);
· Terminal capacity is up to 9 Mbit/s, 1000 IP packets per second;
· Maximum number of ports E1 (G-703) per one terminal device – 6 (then it is grown by cascade of terminal devices);
· Quantity of voice trunks per one terminal device – 60 (then it is grown by cascade of terminal devices);
· Integrated IP interface (Ethernet), optional analog telephone interfaces.

II ALLOCATED COMMUNICATION CHANNELS (SPN.SCPC)

Balkansatcom company takes the following requirements into account while organizing of trunk satellite channels (SCPC):

RELIABILITY REQUIREMENTS

· Possibility of redundancy schemes construction 1:1;
· At channel level – redundancy of transmitter-receiver;
· At network level – satellite modem redundancy /router standby;
· "Last miles" redundancy, dynamic switching to redundant "last mile" in emergency.

LOW PRICE OF SATELLITE FREQUENCY AND ENERGY RESOURCE WITHINС-BAND AND KU-BAND RANGES

· Order of frequency and energy satellite resource with Intersputnik International Organization of Space Communications;
· Detailed preliminary calculation of line energy.

HIGH EFFEICIENCY OF FREQUENCY AND ENERGY RESOURSE USE

· Use of equipment with applications;
· CnCmode;
· use of high efficiency methods of modulation and coding (8-PSK, 16-QAM, LDPC&BCH);
· use of geostationary spacecraft with high energy performance.

WEAK DEPENDENCE ON WEATHER CONDITIONS

· ACM mode – adaptivecodemodulation;
· Channel speed can be changed dynamically depending on receive levels – the primary purpose is "to hold" the channel when weather conditions are deteriorated even by way of the temporary capacity reduction (FEC dynamic change)

СHANNEL CAPACITY SCALING IN THE CASE OF PEAK LOADING IN BUSY HOURS

· burstable for TDM/MF-TDMA mode.