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Summit & Summit 800
Feature Description and Operation Manual
Issue 1.2
315
4.7 Direct Inward Dialing (DID)
Description
A carrier service, known as Direct Inward Dial (DID), sends digits to the system so that the call
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
Operation of DID is automatic once configured
Conditions
1. If ICLID routing is assigned for the Line, the received Caller Id is compared to the
ICLID Table for routing first. If 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. DID calls are
subject to Group Call Pick-up and Directed Call Pick-up.
4. 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
Keyset Admin.
CO/IP
CO Service Type (PGM140-Button1)
ISDN DID Remove the Number of Digit (PGM 143-Button 5)