LG-Ericsson ipldk-60 - 2.9 Direct Inward System Access (DISA)

Issue 2.2
Feature Description and Operation Manual
16
2.9 Direct Inward System Access (DISA)
Description
DISA service permits an incoming caller to access system resources and features. For
‘Normal’ CO Lines that are enabled for DISA service, the system will answer the call and deliver
internal dial tone or a VMIB announcement. During and for the Inter-digit time (default 5
seconds) after the announcement, the connection is monitored for digits from the caller. The
caller can dial any number from the System Numbering Plan code available to an SLT including
CO Line access codes, if allowed. DISA service is enabled separately for the Day/Night
service modes (refer to Ref. F).
The caller may be required to enter a valid Station or System Authorization code, which will
affect the dialing restrictions associated with the caller. If no codes are required or the user
dials a System code, the CO Line COS and the CO-to-CO COS determine restrictions. For a
Station Authorization code, the Station COS and CO COS determine any restrictions.
Consideration
 If DISA Account Code is enabled, the caller receives a DND warning tone or a VMIB
announcement to indicate an Authorization Code entry is required (refer to Ref. C).
 The caller may attempt entry of an Authorization code based on the DISA Retry Count.
 A Station can be configured not receive DISA calls. In this case, if the DISA caller dials
the station, the call is routed to stations assigned to receive ring for the CO line or, if no
stations are assigned ring, the call routes to the attendant.
 DID calls that encounter a busy or DND signal, are not answered in the DID/DISA No
Answer Timer, or are received at a vacant or invalid number can be routed to the
Attendant, a tone, Station Group, or VMIB announcement as defined by the DID/DISA
Destination routes. When the Attendant receives such calls, the call is appropriately
identified by the Attendant station LCD.
 A Station which activates an Absence Text Message may automatically be placed in DND
and DID calls routed based on the DID/DISA Destination DND route.
Reference
A. Direct Inward Dialing (DID)
B. VMIB System Greetings and Prompts
C. Authorization Code
D. Class of Service (COS)
E. Day/Night Service
Admin Programming
P-Msg DND (PGM 113, Flexible button 16
Enables DND activation when an Absence Text message is activated at the Station
DISA Restriction (PGM 114, Flexible button 10)
Defines stations allowed to receive a DISA call
DISA Line Assignment (PGM 140, Flexible button 2)
Configures a ‘Normal’ CO Line for DISA service