S30861-U2008-X Siemens RECTIFIER AC/DCV1 CARD BSC/EWSD/BTS/MSC/SDH/SPNET
BTS:The base transceiver station contains the equipment for transmitting and receiving radio signals (transceivers), antennas, and equipment for encrypting and decrypting communications with the base station controller (BSC). Typically a BTS for anything other than a picocell will have several transceivers (TRXs) which allow it to serve several different frequencies and different sectors of the cell.
EWSD:(Elektronisches Wählsystem Digital in German, Electronic Digital Switching System/Electronic World Switch Digita) is one of the most widely installed telephone exchange systems in the world. EWSD can work as a local or tandem switch or combined local/tandem, and for landline or mobile phones. It is manufactured by SiemensAG, who claims that EWSD switches perform switching for over 160 million subscriber lines in more than 100 countries.Main subsystems are:CP (Central Processor),MB (Message Buffer),CCNC (Common Channel Network Control),LINE (Analog Line Group),LTG (Line Trunk Group),DLU (Digital Line Unit),SN (Switching Network),PA (ISDN Primary Access)
SDH:Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) introduction:The basic unit of framing in SDH is a STM-1 (Synchronous Transport Module, level 1).SONET refers to this basic unit as an STS-3c (Synchronous Transport Signal 3, concatenated) or OC-3c, depending on whether the signal is carried electrically (STS) or optically (OC).SONET offers an additional basic unit of transmission, the STS-1 (Synchronous Transport Signal 1) or OC-1, exactly one third of an STM-1/STS-3c/OC-3c carrier.
MCS:The mobile switching center (MSC) is the primary service delivery node for GSM/CDMA, responsible for routing voice calls and SMS as well as other services (suchas conference calls, FAX and circuit switched data).
Applications:
S30861-U2008-X Siemens RECTIFIER AC/DCV1 CARD BSC/EWSD/BTS/MSC/SDH/SPNET
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