Features and Specifications Manual
D8 – 257
Doc.
No. 8201 -
Release 1.0
July 2003
Direct Inward Dialling
(DID)
D-8
FEATURE
DESCRIPTION
Direct Inward Dialling lines can be connected to the system. With DID,
incoming calls from the CO can reach any station in the system without
Attendant intervention.
SYSTEM
AVAILABILITY
Terminal Type
All terminals.
Required Components
DID(4)-U( ) ETU
PRT(1)-U( ) ETU (With Direct Indial subscribed)
BRT(4)-U( ) ETU (With Direct Indial subscribed)
VRS(4)-U( ) ETU (If Automated Attendant required)
OPERATING
PROCEDURES
SERVICE
CONDITIONS
Data Assignment
Incoming DID numbers can be routed to any station or tenants (main
software release 2 and above) in the system regardless of the
numbering plan. If an incoming DID number is invalid, the call can be
sent to a preassigned station or hunt group pilot number.
Two different DID digit modification choices are available:
1. A maximum of two digits can be added and/or deleted from the
incoming DID digits provided by the DID trunk for incoming
address signalling. This is selectable by System Programming per
Trunk Group. [Memory Block 5-00 (Digit Add/Del for Tie Line
Networking Assignment.]
2. DID Full Digit Modification collects the incoming digits and sends
the call to a specified station number.
If a DID incoming call is not answered before a time specified in
Memory Block 1-1-07 (Tie Line Delay Ringing Time Selection), the call
can switch to normal Day or Night ringing assignment (default:
No Timeout).
Allows DIDs to be routed to specified tenants using Memory Block 1-1-
22 (DID Digit Conversion Table).
Use Memory Block 1-1-55 (DID Line ringing Pattern Selection) to
Not applicable.