Lucent Technologies Comcode 108678723 manual Constraint tests, Constants, Computed values

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000

1Preparing for Installation and Upgrades

Determine ATM Switch Suitability 1-11

UNKNOWN means that special engineering is required for this application because of the transit traffic. The special treatment is necessary because the feasibility depends on the volume of the transit traffic. Making any of the changes suggested for NO above might make it feasible regardless of the transit traffic.

Table 1-4. Constants

Timeslots per port network	500
Cache hit ratio	50%
EAL+PACL bandwidth	96

Table 1-5. Computed values

Number of nonlocal port networks	13
Effective number of port networks for PP	24
Effective number of port networks for PMP	24
Number of available timeslots	10064
Per-port SVCs (PP+PMP) needed	572
PP SVCs perPN	3
Total PP SVCs	72
PP cells per second required over trunks	15158
Aggregate cells per second available over trunks	366792
Bandwidth-limited maximum phone calls over trunks	2032
Timeslot-limited maximum phone calls over trunks	3000

Constraint tests

If your calculations do not yield a YES, this section provides the resources of which you are short. These tests check 7 ATM switch resource limitations against 6 different application scenarios. A 1 in the Test Results (Table 1-7) indicates a passed test; a 0 indicates a failed test. To achieve a YES feasibility, all 42 tests must pass. To achieve a PROBABLY, only 21 tests (indicated in bold) must pass.