What is the minimum number of partitions that must be defined given the dial-plan rules listed below?
* All employees can call local and service numbers.
* Managers can call long-distance and international numbers.
* Executives can call all PSTN numbers including premium numbers.
* Only administrative assistants can call executives.
* Incoming calls can only be routed to phones, not to trunks.
A.
6
B.
8
C.
7
D.
4
E.
3
F.
5
I believe it’s not enough:
From the first 2 I get 4 partitions for the PSTN only,
Local
Service
Long Distance
International
plus 1 for premium numbers.
Then Executives can only be reached by assistants, which means, they must have their own partition.
Assuming that other DNs remain in the partition. Then we must distinguish DNs from Trunks, which asks for another Partitions.
I count 8 different needed partitions.
I think we need 7 total.
Internal for the all phones and internal
Service for service calls
Local
LD
International
Premium
Man-Asst
Let me know if you agree.