Primary Rate Isdn Interface; Dass Ii Important Information; E-Isdn Important Information; Major Equipment Failure - Panasonic Digital Business System Installation Manual

March 1997

Primary Rate ISDN Interface

With the introduction of ISDN v1.2 software the DBS can support primary rate ISDN connection using the DASS II
protocol.
With the introduction of the CPC-EX v2.0 software the DBS can support primary rate connection using DASSII or
Q.931 Euro-ISDN and allow connection of upto 48 channels using two cards of the same protocol.

DASS II Important Information

Please read the following information before proceeding with the installation of the DASS II interface.
Maximum Length Of Co-axial Cables
(75 ohm)
Internal Clock
Encoding Process

E-ISDN Important Information

Please read the following information before proceeding with the installation of the E-ISDN interface.
Maximum Length Of RJ45 Cable
(120 ohm)
Internal Clock
Encoding Process

Major Equipment Failure

When the DBS suffers a major equipment failure the CCU must be switched off by the user at the main power
switch. This should be done as soon as the failure occurs.

Installation

The interface consists of a DASS II or E-ISDN trunk card , CPC-C card or higher , synchronisation unit and
external mounted MDF for DASSII or internally mounted MDF for E-ISDN..
The ISDN equipment is connected together as shown in Figure 27
Note:
The ISDN TRK card must be installed in the universal slot of the DBS on single cabinet systems and the universal
slot of the slave CCU on double structure systems.
If two ISDN cards are used the system must be a double CCU system and both universal slots must be used for
the ISDN cards and linked as shown in Figure 27
When the ISDN equipment is installed the number of analogue lines which can be connected to the DBS is
adjusted as a result of the internal DBS addressing. This is shown in the following tables below..
Panasonic Digital Business System - Installation Manual
Less than 330m between MDF and TJF
2048Kbps +/- 50ppm
64Kbps of 2048Kbps. A Law CCITT
Recommendation G.711 1988
Less than m between MDF and TJF
2048Kbps +/- 50ppm
64Kbps of 2048Kbps. A Law CCITT
Recommendation G.711 1988
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