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The head office of the bank Petrocommerce is situated at the intersection of Petrovka Street and Rakhmanovsky lane. It so happened that the bank premises are located on two sides of Rakhmanovsky lane: main part in the head office building, the additional in the premises of the Marine house on the opposite side (tenancy).
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Petrocommerce



The head office of the bank Petrocommerce is situated at the intersection of Petrovka Street and Rakhmanovsky lane. It so happened that the bank premises are located on two sides of Rakhmanovsky lane: main part in the head office building, the additional in the premises of the Marine house on the opposite side (tenancy).

 

Our task was to ensure a single information channel between the bank divisions. It seemed impossible to lay a cable in the conduit in Rakhmanovsky lane (available conduits were overloaded; performance of earthwork in the heart of Moscow takes long time to get approval of municipal authorities).

Overhead stringing of cables on suspenders was rejected by Moskomarkhitektura (Moscow Architecture Committee) because of design. After long considerations, the Customer was offered the wireless version using infrared wireless optical communication cannel (WOCC).

The system transforms electrical signals of 100Base-TХ standard (Fast Ethernet IEEE 802.3u) into near-infrared optical signals (850-890 nm), transmits them in the atmosphere as a concentrated beam, receives and transforms from optical to electrical ones. This model is designed for line-of-sight communications at a distance of up to 250 m.

 

Capacity margin and built-in system of defogging and defrosting system ensure reliable communication virtually in any weather conditions (rain, hail, snow and fog). Transitory communication failure may arise only in case of very extraordinary natural phenomena close to natural disasters.

 

Example of such phenomenon may be snow squalls, when the human eye does not see at all the other side of communication channel. But in case of use of the system at distances under 250 m, the communication reliability sharply roses. In heavy fog, zero visibility does not mean absence of visibility in infrared spectrum.

After mounting and commissioning, the system has shown high reliability and throughput results and has been accepted by the Customer into operation without any complaint. Two-year operation at several facilities has shown very high system reliability: there were no communication failures between users in any weather conditions.


 
 
  
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