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Some of these are PCS1,TRCO, ET2E/A, DSP Boards .

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Posted by HamidAliKhan

TRCO, ET2E/A, DSP Boards.

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Posted by waqqas1

In General, transcoder do rate adaptation & plug in units are A and Ater interfaces from MSC and BSC respectively.
Transcoder cards consists of DSP boards and each card have 4 LED which we named them as CICs.

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Posted by Hash007

TCSM2 consist of four different plug-in units:

->Transcoder controller plug-in unit (TRCO)
Controls the operation of the transcoder
->Transcoder plug-in unit (TR12/16)
Incorporates 12 (ANSI) or 16 (ETSI) on board
DSPs
Two plug-in units required per A interface PCM
line
->Exchange terminals plug-in units (ET2E/A)
Implements two E1 or T1 PCM lines
->Power source plug-in unit (PCS1)
All plug-in units except the power source require
software
Full rate capacity is 120 (ETSI) or 95 (ANSI)
channels
From nokia website.

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Posted by sagitraz