Panasonic Digital Business System - Overview
April 1997
Issue 6
4
Introduction
The Digital Business System (DBS) range is a hybrid system allowing both digital key
telephone and analogue telephone handsets.
There is a range of three cabinet sizes. DBS38 , DBS68 and DBS90. These can be used
individually or combined with a second DBS90 to give a range of systems DBS38 , DBS68 ,
DBS90 , DBS128 (DBS90+DBS38) , DBS158 (DBS90+DBS68) and DBS180
(DBS90+DBS90).
The cabinets are supplied empty, except for the power supply, and are configured using
modular cards and equipment options.
This section describes the port types and equipment for the DBS.
Important System Data
This is a class A product.
In a domestic environment this product may cause radio interference, in which case the user
may be required to take appropriate measures.
This product has been CE marked to show compliance with the EMC Directive 89/336/EEC
amended by 92./31/EEC and 93/68/EEC.
Port Types
Table 1 - Port Connections
Special And Optional Circuits Supported
Table 2 - Special & Optional Circuits
Port Type
Permitted Connection
PAS
requirements
2 wire PSTN exchange line without DDI
2 wire PBX extension
Loop calling unguarded clearing, DTMF or LD
signalling, timed break or earth recall.
1AS
requirements
2 wire analogue speech band equipment
DTMF or LD dialling, timed break recall
E.g. SLT, cordless telephone, FAX, modem
ITS
Panasonic proprietary DBS digital keytelephone
Panasonic digital Voice Announce Unit
Circuit Type
Circuit Use
Meter Pulse, 50 Hz
Call charge calculation
DC5, 2 wire + E&M
Private circuit link
ISDN 30 , DASS 2
ISDN network connection