The Primary Rate Interface Module
80-14005000-01
2–3
The SBUPRI provides up to 30 x 64kbit/s ‘B’ channels (23 for USA),
each channel can be switched to any time-slot on any of the four
2.048 Mbit/s backplane buses.
The SBUPRI will provide on demand individual 64 kbit/s channels for
use by other application cards in the shelf. The other application cards
are completely responsible for the provision of telephone numbers,
CLIDs, dial commands, timers, and call retry attempts.
Software download to the card is supported via the Shelf Manager
Module.
2.3 Shelf Power Loading
The SBUPRI requires the following current on the power rails:
+5V
+12V
-12V
250mA
0mA
0mA
When installing cards into either type of shelf, the installation engineer
must ensure that the shelf power supplies’ combined output can meet
both the overall power requirements and the individual rail current
requirements of all the cards in the shelf. (Please refer to the relevant
manuals for this information on the cards). This is true whether allowing
for redundancy or not.
Warning:
The Shelf should be professionally installed by a competent
engineer. There are no operator serviceable parts inside the
unit and it should only be opened by a qualified service
engineer. The mains supply should be disconnected before
accessing the interior.
Gefäh! Bereich. Nur für fachpersonal. Nicht öffnen
berührungsgefahr!
