Toshiba DK8, DK 16 manual Introduction, System Capacity

1INTRODUCTION

1.00This chapter offers guidelines and consider- ations on how to configure a STRATA DK8/DK16 system, which can support a wide variety of sta- tions and peripherals.

2SYSTEM CAPACITY

2.00Total System Capacity

2.01The STRATA DK8/DK16 systems have a modular design which allows them to support a number of station and CO line configurations. The main component of each system is the Key Ser- vice Unit. The DK8 KSU can have up to 10 stations and four CO lines. The DK16 Base Key Service Unit can have up to 12 stations and four CO lines. An Expansion Key Service Unit can be added to the DK16 to increase the station capacity to 20 and the CO line capacity to eight. Station and CO line configurations are shown in Table 3-A (for DK8) and Table 3-B (for DK16).

2.10The DK8 Key Service Unit

2.11Station and CO Lines. The DK8 Key Service Unit comes standard with four digital telephone circuits (ports) and two CO line circuits (Table 3-C). An optional printed circuit board called the QCDU can be added to the KSU to provide one CO line circuit and two digital telephone circuits. A maximum of two QCDUs may be added to provide a total of four additional digital telephone circuits and two additional CO line circuits. Another op- tional printed circuit board called the QSTU can be added to the DK8 KSU to provide two standard telephone circuits.

2.12Peripherals. The DK8 Key Service Unit can support a number of peripherals, which are not considered as stations and do not affect the maxi- mum station and CO line capacities. A customer- supplied Music-on-hold source, optional reserve power battery and charger, a customer-supplied emergency standard telephone for system power failure occurrences and an amplifier with speaker for paging and night ringing can all be connected to the Key Service Unit (Table 3-C). A relay contact is also provided to control one of the following

INSTALLATION-CONFIGURATION

SECTION 100-816-203

MARCH 1993

peripherals: Music-on-hold source, night bell, or page amplifier mute control.

2.20The DK16 Base Key Service Unit

2.21Station and CO Lines. The DK16 Base Key Service Unit comes standard with eight digital telephone circuits (ports) and four CO line circuits (Table 3-D). An optional printed circuit board called the KSTU can be added to the unit to provide four standard telephone circuits (ports).

2.22Peripherals. The DK16 Base Key Service Unit can support a number of peripherals, which are not considered as stations and do not affect the maximum station and CO line capacities. A customer-supplied Music-on-hold source, cus- tomer-supplied separate background music source, customer-supplied reserve power bat- teries, a customer-supplied emergency stan- dard telephone for system power failure occur- rences and an amplifier with speaker for paging and night ringing can all be connected to the Base Key Service Unit (Table 3-D). A relay contact is also provided to control one of the following peripherals: Music-on-hold source, night bell, or Page Amplifier mute control.

2.30The DK16 Expansion Key Service Unit

2.31Station and CO Lines. The optional DK16 Expansion Key Service Unit has four universal slots which can support a maximum of four CO lines and eight stations. Printed circuit boards (PCBs) that support CO lines and can be installed in the Expansion Unit are the PCOU and KCDU (Table 3-E). PCBs that can support stations and be installed in the Expansion Unit are the PDKU, PEKU, PSTU, PESU, and KCDU.

2.32Peripherals. The Expansion Unit can sup- port either a PIOU or PIOUS PCB, which both provide, among other features, Station Message Detail Recording (SMDR), an interface for a local programming terminal, and connectors for an in- ternal modem (IMDU) for remote maintenance and administration (Table 3-F). Any device that connects to the PIOU or PIOUS should not be considered a station and does not affect the system's station capacity.

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