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Design and implementation of the operation and maintenance software for a new GSM transcoder - page 12 / 26

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© NOKIA12 paavo.markkola@nokia.com18.10.2005

Operation and Maintenance Software

Runs on the controlling unit; TRCO in TCSM2 or TR3E/A motherboard in TCSM3i

Built for 16-bit 186 type processors with 1 MB memory range

Stored to flash memory in the controlling unit and the maximum size is 512 kB

TCSM2 also has a ROM version which ensures that the flash version is up-to-date

The responsibilities of the O&M software are

making sure that the software modules used by the transcoder are up-to-date,

loading devices with appropriate software modules,

supervising the operation of the transcoder,

performing diagnostics on the transcoder unit,

configuring the transcoder and maintaining configuration data, and

implementing local and remote interfaces to the transcoder.

Built around the Nokia proprietary operating system called PECTUS

Functionality implemented with a number of PECTUS processes with defined purposes and responsibilities

Processes communicate with each other by sending messages

BSC – TCSM communication is also based on messages

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