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PeterStar data services ensure quality and reliable communication at a rather flexible pricing system providing for reductions depending on the total capacity of subscriber terminals purchased.
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HDSL-Based Dedicated Channels
HDSL (High Speed Digital Subscriber Line) technology allows the organization
of high-speed data lines at an access speed of up to 2048 Kbps.
Basic advantages provided by data transmission over the PeterStar dedicated
channel network are as follows:
- Reliable and quick transmission of large volumes of data at a constant speed;
- Round-the-clock channel availability;
- Possibility of simultaneously transmitting voice and data over one channel;
- Flexibility in terms of using various terminal equipment to transmit speech,
data and video images;
- Possibility of using various-type user interface (RS232, V.35, G.703 etc.);
- Possibility of connecting subscribers of the PeterStar dedicated channel
network to different external trading and information systems (the Internet,
exchanges and e-bids).
The structure of the PeterStar dedicated channel network allows the creation
of corporate networks of the most complicated configuration. These networks
are capable of connecting channels differing in data speeds and the nature
of information transmitted over them.
Arranging dedicated channels using multiplexers on the subscriber side opens
up wide opportunities for organizations with a developed affiliate structure.
Such organizational scheme provides for the following advantages:
- Possibility of creating “star” networks for which construction a considerable
price reduction is granted by PeterStar depending on the total capacity of
channel leased by a subscriber;
- Possibility of simultaneously exchanging data toward several destinations;
- Combining voice channels and data channels of any capacity into a single
network.
Figure 1 shows an example of a branched “star” network organized based on
PeterStar dedicated channels.
Fig.1. Corporate “star” network organization based on PeterStar dedicated
channels
Along with dedicated channels within the city territory, PeterStar is capable
of providing data exchange with most remote cities and regions of Russia as
well. Organization of international dedicated channels is possible.
Reliability and informational security of data transmitted over the PeterStar
dedicated channels is ensured by using fiber-optics technology, encoding information
in the process of its transmission over copper pairs, and round-the-clock monitoring
of the PeterStar data network allowing the company to immediately detect any
failures on the network and take prompt steps to localize and eliminate the
causes of abnormal operation.
SDH-Based Transport Fiber-Optics Network
The network of digital dedicated channels is built on the transport fiber
network based on the SDH (Synchronous Digital Hierarchy) structure. The PeterStar
transport network was put into service in the spring of 1994. The fiber-optics
technology STM-16 used provides a data speed on backbone lines of up to 2.4
Gbps.
The PeterStar transport network is built as a hierarchical structure consisting
of 8 rings. All copper and fiber cables are laid within a closed ducting system.
The network structure provides for 100% redundancy at the expense of automatically
channel routing allowing the selection of an alternative data exchange path
in case of any network segment damaged.
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