Instruction manual

Universal Slot PCBs
Option Interface PCBs
Strata DK General Description 6/00 49
Serial Interface Unit (RSIU, DK424i only)
The RSIU provides up to four interface ports that allow the Strata DK424i systems to connect to
the following:
♦ Voice Mail system with RS-232 SMDI
♦ ACD/SMIS system or Call Center Viewer
♦ SMDR printer, call accounting machine or HMIS
♦ DKi Admin/DKi Backup running on a PC as a maintenance terminal (locally or remotely) or
HMIS
♦ StrataControl PC maintenance terminal
The RSIU, which comes standard with one port, can be equipped with up to three more optional
RS-232 ports (total of four RS-232 ports). The Single Interface Subassembly (RSIS) piggy-backs
onto the RSIU PCB to provide the optional ports. One of the serial ports can be an internal modem.
An optional 2400 bps built-in Modem Subassembly (RMDS) can be added onto the RSIU.
The maximum allowed combined speed of all four channels is 9600 bps. All four channels of the
RSIU connect directly to the system processor via a short ribbon cable. The RSIU must be
positioned in the first universal slot of the Base Cabinet.
RMDS (DK424i only)
The optional RMDS modem mounts on an RSIU and can function either as a remote maintenance
modem to provide the same functions as the IMDU or as a direct RS-232 link to a DKi Admin/
DKi Backup PC COM port.
The function of the RMDS is set in system programming. Data transmission speed for the built-in
modem function can be set at 1200 bps or 2400 bps via system programming.