Nortel Communication Server 1000 Manual page 94

94 Integrated Digital Access (IDA) equipment
No two different D-Channel providers can share the same DNUM. Hence,
the combined maximum number of DCH, and DDCH cards in the system
is 16.
The DCH has one D-Channel unit, the DDCH has two D-Channel units.
Therefore, the total number of D-Channels in a system is derived by the
following formula:
Total_Num_DCH-Units = Num_DCHx1 + Num_DDCHx2
Therefore, Total_Num_DCH-Units in any given system is between 0-63.
CPU capacity
Using a NT5D97AD DDP2 card instead of DTI2/PRI2 cards does not
increase the load on the system CPU. The DDP2 replaces an ENET card
and two DTI2/PRI2 cards. Emulating the ENET card and the overall CPU
capacity is not impacted by using a DDP2 card instead of a DTI2/PRI2
card.
Power requirements
Table 43 "NT5D97AD DDP2 power requirements" (page 94)
power requirements for the NT5D97AD DDP2 card.
Table 43
NT5D97AD DDP2 power requirements
+5V
+12V
-12V
Total Power (Maximum)
Testability and diagnostics
The DDP2 card supports testing and maintenance functions through the
following procedures:
•
Selftest upon power up or reset
•
Signalling test performed in the LD 30
•
Loopback tests, self tests, and continuity tests performed by LD 60
and LD 45
•
The D-Channel, (DCH, DDCH) maintenance is supported by LD 96.
Voltage Source
Backplane
Backplane
Backplane
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
Current
DDP2
(without
NTBK51AA)
3A 3.8A
25mA 75mA
25mA 75mA
15.6W 20.8W
lists the
DDP2
(with
NTBK51AA)