iPECS UCP
Feature Description and Operation Manual Issue 1.3
305
4.7 Direct Inward Dialing (DID)
Description
A carrier service, known as Direct Inward Dial (DID), sends digits to the system so that the
calls may be routed directly to a specific station or system facility. Digits sent to the system
are generally the last digits (3 or 4) dialed by the caller.
After collecting the digits from the carrier, iPECS converts the digits employing one of three
DID digit conversion Types:
Type 0 - collect incoming digits based on the programmed digit count and convert
the digits according to the DID conversion pattern, resulting in the DID destination
number.
Type 1 - use the incoming DID digits as the destination number without converting.
Type 2 - Use the result of DID conversion Type 0 as an index to the Flexible DID
Conversion Table and use the table information to route the call.
Operation
System
Conditions
Operation of DID is automatic once configured.
1. If ICLID (Incoming Calling Line Id) routing is assigned for the Line, the received
Caller Id is compared to the ICLID Table for routing first. If the Caller Id does not
match an entry in the ICLID Table, the normal DID call processes are used.
2. DID calls that encounter a busy signal, are not answered in the DID/DISA No
Answer Timer, or are received at a vacant or invalid number are routed to the
Attendant, a tone, Station group, or System announcement. When the Attendant
receives such calls, the call is appropriately identified in the Attendant iPECS IP or
LDP Phone display.
3. For a station that is part of a non-pilot Station Hunt group, DID calls will follow the
group hunt process if the Station is busy or does not answer the call.
4. DID calls are subject to Group Call Pick-up and Directed Call Pick-up.
5. If a System announcement is defined as the destination in the Flexible DID
Conversion Table, a Caller Controlled Routing Table for the announcement can be
defined. iPECS can be configured to drop (disconnect) the call after playing the
recorded announcement.
Programming
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