System Capacity And Performance - Avaya Nortel Communication Server 1000 Reference

NT5D97 Dual-port DTI2 PRI2 card
Table 109: NT5D97AD loops configuration
Loop 1
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/NTBK51CA 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:
260 Circuit Card Reference
DTI2
PRI2
not configured
DTI2
PRI2
DDCS
Comments? infodev@avaya.com
Loop 0
V
V
Loop 0
not configured DTI2
V V
V V
V V
V V
V V
V V
PRI2 DDCS
V V
V V
V X
X V
July 2011