Power Requirements - Nortel Succession 1000 Installation And Configuration Manual

Page 82 of 396 ISDN Primary Rate Interface equipment overview

Power requirements

553-3001-201 Standard 1.00
D-Channel capacity
The software configuration for the NTBK51AA DDCH is similar to the
MSDL. It is both physical and logical, and supports D-Channel functionality
only.
The system has a total capacity of 16 addresses (Device Addresses or
DNUM) that can be reserved for DCHI card, MSDL card or DDCH card. One
exception is DNUM 0 which is commonly assigned to the System Monitor.
No two different D-Channel providers can share the same DNUM. Hence, the
combined maximum number of DCHI, MSDL and DDCH cards in the system
is 16.
The DCHI and DDCH have two D-Channel units, the MSDL has four.
Therefore the total number of D-Channels is derived by the following
formula:
Total_Num_DCH-Units = Num_DCHIx2 + Num_DDCHx2 + Num_MSDLx4
Therefore,
Total_Num_DCH-Units
CPU capacity
Using a NT512 DDP card instead of DTI/PRI cards does not increase the load
on the system CPU. The DDP replaces an ENET card and two DTI/PRI cards,
it emulates the ENET card and the overall CPU capacity is not impacted by
usage of DDP card instead of a DTI/PRI card.
Table 17 on page 83
October 2003
in any given system is between 0-63.
lists the power requirements for the DDP card.