Panasonic DBS Series Overview page 27

Panasonic Digital Business System - Overview
April 1997
CPC-EX - Euro ISDN
This update details the new facilities for the DBS provided with the CPC-EX version 2.
These facilities are:
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Euro ISDN
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Multiple ISDN pipes
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Alternative DDI Destination
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DDI Group Ring With Call Forward
%
Ringing Hunting For External Calls
%
Operator Call Forward All Calls
%
Extension Feature Clear
%
Programming Mode At Any Display Keyset
They are described below.
EURO ISDN And ISDN Feature Enhancements
The v2 software provides the ability to connect to either DASSII or Q.931 ISDN protocols. In
addition a second digital trunk card may be fitted to double cabinet DBS systems to give a
full 48 ( maximum allowed by DBS ) channels split over two digital 'pipes'. In this case both
cards must be running the same ISDN protocol. Channels can be split as required between
the two cards up to a maximum of 48.
Systems using DASSII will require a new DASII card with an additional Sync Unit connector
in the master CCU The second unit can be the existing DASSII card or a new card with the
additional connector. All Euro ISDN cards are equipped with the extra connection.
The Euro ISDN protocol supports Sub-addressing and 3.1Khz Audio calls in addition to the
DDI and CLI facilities available with DASSII. Sub-addressing is a DISA like function over the
digital network. Digits are dialled after the telephone number and these are passed to the
receiving system and used to route the call internally. 3.1Khz Audio is a setting which allows
calls requiring limited bandwidth ( modem and fax calls ) to only take up the minimum
required bandwidth and not reserve system resources from calls which require the full
channel bandwidth.
The DDI routing has been extended to include a follow on extension option for each DDI on
the system with the call reverting to the operator if both destinations are unanswered for any
reason.
Call Forward With Group Ringing
Call forward and group ringing are also modified so that extensions in ring groups can set call
forward for personal ( direct to the extension, not the group ) calls and still ring for group calls
which will bypass the call forward.
Ringing Hunting For External Calls
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Issue 6