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Design and implementation of the operation and maintenance software for a new GSM transcoder - page 20 / 26

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© NOKIA20 paavo.markkola@nokia.com18.10.2005

Implementation, ET Management

In principle ET management works as before

Less ET plug-in units

More ET units

The capacity of the control link to an ET16 plug-in unit is 64 kb/s

Delays are needed otherwise the link is overflowed

ET16 plug-in units must be loaded

Software is much larger than in TCSM2 takes more time

Needs message interface to flash manager

Not all TCSM3i units have ET plug-in units in their control

One ET16 plug-in unit provides Ater interface PCM line for all units in a TCSM3i cartridge

One ET16 plug-in unit provides A interface PCM lines for four TCSM3i units

TR3E/A might be swapped must recognize in which role configuration in flash was lat used

If the TCSM3i does not control any ET16 plug-in units then ET managements goes idle

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