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Chapter 3. System Features
Considerations
•
Caller ID takes priority over the DDI name assignment.
•
Only one of the two DDI tables may have name assignments.
•
If the DDI/DL destination is a Directory Number (DN), the call goes to an extension that has a
destination key even if the Primary Directory Number extension is busy or does not answer.
•
If the DDI/DL destination is an UNA extension, the UNA will ring depending on DDI number
tenant group/ DL incoming trunk tenant group.
Direct Line Ringing
DL Ringing allows calls on a specific Exchange Line to be directed to ring a specific extension,
System Speed Dial (SSD) number (for redirecting calls out), and hunting group.
This can be very useful when a exchange line is dedicated to a specific person or purpose. However,
this can be a more expensive use of the line since it has a more limited use.
Prior to Version 4.5, it was impossible to distinguish between Private Line incoming calls and
Directory Number incoming calls. Version 4.5 and higher allows the person receiving the call to
easily distinguish between these types of incoming calls.
Hardware Requirements
•
N/A
Considerations
•
If the DDI/DL destination is a Directory Number (DN), the call goes to an extension that has a
destination key even if the Primary Directory Number extension is busy or does not answer.
•
If the DDI/DL destination is an UNA extension, the UNA will ring depending on DDI number
tenant group/ DL incoming trunk tenant group.
Direct Inward System Access Ringing
DISA Ringing (which is related to the DISA feature) allows a Exchange Line specified as a DISA
Exchange Line to ring and give off-site users dial-in access to the System. Once the DISA exchange
line is accessed, the user receives dial tone and may dial an extension.
For more information on DISA, see "Direct Inward System Access" on page 39.
Hardware Requirements
•
N/A
Considerations
•
N/A
68
S-ICX (International) issued April 2002
Section 700 - Operation
S-ICX-64-700
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