Nortel Networks 1000 - Manual (Page 325)

Physical description 325
Table 123
NT5D97AD loops configuration
Loop 0
not configured DTI
2
PRI
2
DDCS
not configured V V V V
DTI2 V V V V
PRI2 V V V X
Loop 1
DDCS V V X V
Note: Each loop DPNSS can be defined in Normal or Extended
addressing mode.
System capacity and performance
Physical capacity
Each NT5D97 DDP2 card occupies one slot on the network shelf. Each
card supports two digital trunk circuits and two network loops. The total
number of DDP2 cards per system is limited by the number of network
loops, physical capacity of the shelf, number of DTI2/PRI2 interfaces
allowed by the software and the range of DCH addresses.
D-Channel capacity
The software configuration for the NTBK51AA DDCH is similar to the
MSDL and only supports D-channel functionality.
The system has a total capacity of 16 addresses (Device Addresses
or DNUM) that can be reserved for DCH card, MSDL card or DDCH
card. One exception is DNUM 0 which is commonly assigned to the TTY
terminal.
No two different D-Channel providers can share the same DNUM. Hence,
the combined maximum number of DCH, MSDL and DDCH cards in the
system is 16.
The DCH has one D-Channel unit, the DDCH has two D-Channel units,
and the MSDL has a maximum of four units. Therefore, the total number of
D-Channel is derived by the following formula:
Total_Num_DCH-Units = Num_DCHx1 + Num_DDCHx2 +
Num_MSDLx4
Therefore, Total_Num_DCH-Units in any given system is between 0-63.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.