MINI-LINK BAS 8-10
Technical Description EN/LZB 111 0542 P2B
8.4 Core ATM – C-AAS (CE Shelf)
The C-AAS (CE Shelf) is an ATM multiplexer that is specialised for
CE. It can be used as the primary interface for providing E1/T1
connections to the PSTN or as a supplementary interface
(supplementary to CE-SNI interfaces housed in the R-AAS).
This shelf is designed according to International Electrotechnical
Commission (IEC) standards. It fit in racks and cabinets designed
according to Electronic Industries Association (EIA), American
National Standard Institute (ANSI) or European Telecommunication
Standardization Institute (ETSI) standards and practices. Both front
access and rear access shelves are available, respectively illustrated in
Figure 8-8 and Figure 8-9.
The C-AAS (CE Shelf) has 19 board slots. Slot 1 of the C-AAS (CE
Shelf) is dedicated for the ET to connect the shelf to the external
network. Slots 2-17 are used for CE boards, or other ET.
Finally position 18 and 19 are dedicated for redundant power board
POUs.
It is possible to use the different ET board types, ET155 Optical, and
ET34/45, freely in the C-AAS (CE Shelf).
8.4.1 Front Access Shelf
The front access C-AAS (CE Shelf) has front accessible connection
field, for external alarm and power connections, below the card cage.
The connections to both ET's and CE's are via front connectors.
The Printed Board Assembly (PBA) dimensions are 265 x 175 mm
(HxD). A fan unit is placed above the card cage. The shelf has an EMI
shielded card cage, the plug-in units have shielded front panels.
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