Rsiu, Rsis, Rmds - Rs-232/Modem Interface Unit - Toshiba strata CT Installation & Maintenance Manual

Digital business telephone system
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RSIU, RSIS, RMDS – RS-232/Modem
Interface Unit
System:
Circuits per PCB:
Interfaces with:
Older Version(s):
H
C
Strata CT I&M Manual October 2000
Strata CT
four interface ports
SMDI or Toshiba Proprietary RS-232 voice mail
ACD SMIS computer
SMDR printer or SMDR call accounting machine
DK Admin PC or maintenance terminal (locally or remotely)
none
The RSIU is a standard plug-in type PCB that must be installed into the first universal slot of
the Strata CT base cabinet. The RSIU PCB provides one standard RS-232 port (modular jack)
when ordered from the factory; this port can be configured in system programming to support
any one of the hardware options listed above.
The RSIU can be equipped with up to three more optional RS-232 ports (total of four RS-232
ports) or with two optional RS-232 ports and one modem port (total of three RS-232 ports
and one modem port). The optional RS-232 ports are provided by installing RSIS piggy-back
PCBs onto the RSIU PCB. The optional built-in modem is provided by installing an RMDS
piggy-back PCB onto the RSIU (see
The RSIS PCB can support any one of the hardware devices listed above via its RS-232
modular jack. The RMDS PCB can function two ways: the RMDS can operate like an RSIS
allowing it to support any one of the hardware devices listed above locally from its RS-232
modular jack; or, the RMDS can operate as a 1200 bps (bits-per-second) or 2400 bps system
remote maintenance modem.
The RMDS PCB function (modem or RS-232 port) is set in a system program option. The
RMDS can be set for one function only; it cannot support both functions simultaneously.
When configured as a modem, the RMDS PCB supports only the Strata CT remote
maintenance, ASCII terminal, and DK Admin functions, and does not simultaneously support
SMDI, SMIS, SMDR, etc. (See
The total bits-per-second (bps) data rate of the four RSIU, RSIS, RMDS (RS-232/modem)
ports combined cannot exceed 9600 bps. The RSIU, RSIS RS-232 ports can be individually
set in system programming to operate at 1200 bps, 4 ports max.; 2400 bps, 3 ports max.; 4800
bps, 2 ports max.; or 9600 bps, 1 port max.; or, any other combination that does not exceed
9600 bps. The RMDS modem function can be set to operate at 1200 bps or 2400 bps;
however, if the RMDS port is used as a RS-232 port instead of a modem, it can also be set for
4800 bps or 9600 bps.
The TTY and modem function cannot operate on separate RSIU, RSIS, RMDS ports
simultaneously. If both functions are programmed at the same time on separate ports, the
function of the lowest numbered RSIU, RSIS, RMDS port (TTY or modem) will be
active.The communication parameters for all RSIU, RSIS, RMDS port function types except
the SMDR are:
N
Data word bits = 7
N
Parity = even
N
Stop bits = 1
Figure 3-14
on
Page
Figure 4-22
on
Page
4-23.)
Universal Slot PCBs
3-31).
3-29

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