Panasonic dBs Instrucciones de operaciones Pagina 79

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Panasonic Digital Business System - Operating Instructions
March 1997 Issue 24
79
Direct Inward System Access
Direct Inward System Access (DISA) is a function which allows outside caller who are familiar with the system to
dial directly to an extension. DISA lines are set up via system programming. When the line rings it answers
automatically and sends system internal dial tone to the caller, who can then tone dial the extension number they
require. DISA requires at least one DTMF receiver card to be installed in the system.
An ID code can be entered to restrict access to authorised users only. DISA will only allow an extension to be
dialled and will no accept line access code for breaking out of the system.
If the system is linked to another via the E&M card then DISA callers can dial across the link and access the
remote systems functions. These may include break out depending upon the system configuration and
programming.
If a DISA call is unsuccessful it twill revert to the operator after 15 seconds. This will include call which have not
received the DISA terminate signal, an option in software v3.1 and later and set by system programming.
Maintainers can gain access to the system programming via a DISA line if the Remote Administration Interface
(RAI) is fitted to the system.
The * and # keys have the following meanings when used in DISA calls.
When a caller on a DISA line dials * the call is routed directly to the operator
extension.
When the caller on a DISA line dials # one of the following will occur
- Internal dial tone is returned to the caller to try another extension number
- The DISA call is terminated and the system disconnects the line
Early system software only offers the retry option, v3.1 and later can select
the option to use via system programming.
DISA Break Out
( CPC-EX processor )
DISA breakout allows an external caller to dial into the DBS and using a preset code break out on another line. To
use this facility the code, called Transfer ID, must be stored and lines must be available to the dial 9 and tenant
group chosen. There are 5 Transfer IDs that can be configured for the system.
The operational sequence is:
On Answer DISA ID 9 TRS ID Telephone Number
The DISA ID is optional and is only used of the DBS is configured to use it. The TRS ID or Transfer ID is
mandatory and must be set up to enable DISA breakout.
Least Cost Routing
The DBS supports seven indirect carriers in addition the direct carrier. It will then select , subject to programming,
the cheapest route when a call is made. This is Least Cost Routing (LCR). It is configured by the installer via
system programming. Once set up it operates automatically when call are made.
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