iPECS UCP - 4.9 Direct Inward System Access (DISA)

iPECS UCP
Feature Description and Operation Manual Issue 1.3
308
4.9 Direct Inward System Access (DISA)
Description
Each outside Line may be assigned for DISA service, which allows an incoming caller to gain
access to the system resources and/or features. The iPECS will answer the outside call and
provide intercom dial tone or route to a System announcement where Caller Controlled
Routing may be defined. The DISA caller may then access the desired resource using dial
codes.
If an Authorization Code is required for DISA access, when the system answers the incoming
DISA call, DND Warning tone is provided to indicate an Authorization Code must be entered.
Operation
System
1. Recognize incoming call.
Incoming call subject to DISA service
2. Answer call and connect caller to Intercom dial tone or System announcement.
3. Process call based on received digits/programming.
DISA Caller
1. Place call to DISA facility of the system.
To access the system’s resources from an external party
2. At receipt of dial tone or announcement, dial as desired. If DND Warning tone is
received, enter an Authorization Code to receive dial tone.
Conditions
1. Each outside Line is separately assigned for DISA operation during Day, Night
and/or Timed system operation mode. DISA operation is active only when the
system is in the assigned operating mode(s).
2. DISA callers can be routed to a System announcement in place of Intercom dial
tone. The announcement can be associated with a CCR Table or assigned to
disconnect after playback.
3. A DISA caller can be required to enter an Authorization Code to access the
system’s external outgoing resources, facilities or features. If required, the caller is
permitted to retry entry of a valid Authorization Code based on the DISA Retry
count. Continued failure results in disconnect.
4. DISA callers are subject to COS (Class of Service) dialing restrictions. If
Authorization Codes are required and the code entered matches a Station
Authorization Code, the station COS (Class of Service) will apply. Otherwise, the
assigned DISA COS (Class of Service) will apply. In both cases, the Line COS
(Class of Service) for the outgoing Line will be active.
5. The system will disconnect an outgoing DISA call if the Unsupervised Conference