Mitel SX-200 Practices page 613

General Description
Direct Inward Dial Rerouting
2.12
In some cases DID trunks may be shared among tenants. The block of numbers
obtained is used by all the tenants, each with its own phone numbers listed in the
telephone directory. The DID trunks are placed into one tenant which is programmed
to be able to connect to the other tenants that share the DID trunks. If no one
answers an incoming call, or if the number is busy, it may be rerouted to a specified
answer point as a No Answer/Busy recall.
Direct+ line Rerouting
2.13 Incoming DIL trunks are directed to ring destinations in any tenant that they can
connect to. An unanswered incoming call may be rerouted to a specified answer
point (Day, Night 1, or Night 2) as a No Answer recall, from the tenant into which the
trunk rang.
SubattendanWEnhanced Subaltendants and Message Centers
2.14 A company may set up its system with a main attendant console for receiving
incoming calls and routing them to stations in the system. Usually the attendant who
handled an incoming trunk call receives the No Answer recall. Any department
wanting to handle its own recalls (for example, to take messages) may program
alternate recall points for its calls. The department is programmed as a tenant and
then uses call rerouting for its calls.
The person can take a message and set message waiting on the absent party's set.
Members of a department may call their own "message center" by dialing 0. Since each
tenant programs its own dial 0 answering point, people do not have to remember how
to call their message desk. They can call another department's message desk by
dialing its extension number.
Numbering Plan
2.15 Since tenants are allowed to connect to each other, extension numbers must be
unique across the entire system. For example, there may be one and ONLY ONE
extension 201 in the PABX. Similarly, feature access codes must be the same
throughout the system. SMDR records may be sorted for each tenant by their unique
extension numbers.
Automatic Route Selection with Multiple Tenants
2.16
Automatic Route Selection (AK) enables the system to access, in a specific
sequence, possible routes to a given destination. Routes are listed within the system
in the order in which they are to be tried.
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