1.1 Incoming Call Features
Feature Guide 23
1.1.1.3 Direct Inward Dialing (DID)
Description
Directs a call on a public CO line assigned as a Direct Inward Dialing (DID) line to a preprogrammed
destination according to the call's DID number, which is based on the telephone number dialed by the caller.
When a call reaches its destination via DID distribution, the DID name will be displayed on the proprietary
telephone (PT), allowing extension users to easily see whom a call is directed to. Each DID number has a
destination for each time mode.
DID distribution allows you to use your telephone numbers for specific purposes. For example, you can
direct calls from customers' fax machines to your office fax machine automatically, or allow your overseas
customers to be automatically connected to specific operators.
[Method Flowchart]
Yes
Yes
No
Does the call have Caller ID
information and is CLI distribution
enabled for the DID number in the
current time mode?
No
Has the caller
been stored in the System Speed
Dialing Table and has a CLI destination
been assigned?
The call is routed to the
DID destination.
The call is routed to its
CLI destination.
No
Yes
Is the DID number found in
the DID Table?
Yes
Is a DID destination assigned
for the current time mode?
No
The call is routed to an
operator (Intercept
Routing—No Destination).
The call is routed to an
operator (Intercept
Routing—No Destination).
A CO line call is received on a DID line.
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