Specifications

Introducing The DXP
DXP Correspondence Manual
Ram Card
The random access memory, or RAM, card holds the memory.
required to support the system’s software package and database. The
RAM card attaches directly to the CPU board, and its circuitry is
connected to the CPU board through a 64-pin dual in-line connector.
The RAM card is available in two forms: the standard RAM card,
DXRAMSTD68K, and the expanded RAM, DXRAM-EXP68K. Both
boards have a super capacitor that retains system programming for a
minimum of 60 hours if the DXP loses power. The main difference
between the two boards is that the standard RAM card provides
approximately 200 Station Message Detail Records (SMDRs); the
expanded RAM provides approximately 12,200 SMDRs. The
expanded RAM also allows on-board software upgrade; a feature that
increases the speed of upgrading the DXP software.
While the RAM card attaches directly to the CPU board the system
software card attaches onto the RAM card. For more information on
the Ram card, see IMI66-085, and IMI89-095.
Software Card
The software card (DXPSW-xxx) houses the erasable, programmable,
read-only memory, or EPROM, that stores the operating controls of
the DXP telephone system. The software card attaches to the RAM
card, and, like the RAM card, signals pass between these cards
through a 64-pin dual in-line connector. Chapter Three details how to
connect these cards. There are several different versions of software
available for the DXP; the different software versions determine
which telephones and features the system supports. For more
information on the Software card, see IMI66-085, and IMI89-095.
1 - 8 Introducing The DXP