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Chapter 3. System Features
Automatic Route Selection
Description
When Automatic Route Selection (ARS) is enabled, the system follows a preselected route for calls.
Usually the selected routing is the least cost route.
ARS works in conjunction with Toll Restriction Service (TRS) (Call Barring). Calls can be denied
based on the programmed TRS (Call Barring) level for the originating party. (For more information,
see "Ringing Modes" on page 57.)
•
Three levels of ARS checking are available based on the dialled number following the ARS
access code:
•
Direct Route Selection: The simplest form of ARS routing that upon ARS entry
(enter 9) directly selects a trunk group and any dialled number modification.
•
Route List Selection: A more complex routing that includes up to 5 alternative
levels of route selection and includes TRS (Call Barring) level checking.
•
Time List Selection: The most complex routing that determines the appropriate
route list based upon the day and time.
•
Forced ARS is available on an Extension Class of Service (COS) basis.
•
A special day list provides tailored ARS routing for up to 20 holidays, vacation days, etc.
•
Automatic modification of dialled numbers is available. This includes deleting up to 24 prefix
digits and adding up to a 10-digit prefix and a 10-digit suffix. The modification of dialled
numbers can include pauses, Dual Tone Multifrequency (DTMF) conversion, itemized code
(extension number) and an authorization code. (Itemized code and authorization are not used
in some areas.)
•
Up to 8 authorization codes are available.
Hardware Requirements
•
N/A
Considerations
•
N/A
Automatic Trunk to Trunk Transfer
Description
The System can be set to automatically transfer trunk calls out to another trunk without requiring the
call to be answered internally. This transfer may be either trunk based or extension based (i.e., call
forward outside).
Hardware Requirements
•
N/A
Considerations
•
N/A
24
ICX (International), issued March/1998
Section 700 - Operation
ICX-35-700
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