Specifications

CONTENTS
dom access memory (NV-RAM) located on the removable SMEM2 card. It is protected by
a super capacitor providing seven days of memory protection in the event of loss of AC
power to the system.
MICROPROCESSORS
The DCS 50si uses distributed processing. The system’s primary processor is a 16 bit
Motorola® MC68000 operating at a clock speed of 16MHz. The secondary level of pro-
cessing is done in the keysets.
1.3 PROGRAMMING
The DCS 50si comes with default data. This data provides for operation within seconds
after applying power. All trunks and stations are assigned according to the default num-
bering plan. This numbering plan is flexible and may be changed if so desired. The tech-
nician customizes this default data to meet the end user’s requirements.
The system can be programmed from any display keyset without interrupting normal sys-
tem operation. There are three levels of programming: TECHNICAL, CUSTOMER and
STATION. The technician level has access to all programs and can allow the customer
access to system programs as needed. Technician and customer access are controlled
by different security passcodes.
The DCS 50si also allows the use of a proprietary computer program called PCMMC. This
permits a technician to program the system using a personal computer. PCMMC can be
used on-site to modify the customer database or to download (save) the entire customer
database to a file. This file can then be saved as a backup and uploaded when required to
restore the database.
Through the use of modems, PCMMC can access a DCS 50si system remotely (off-site)
to make database changes or perform uploads or downloads of the customer database
as if the technician were on-site.
1.5