Toshiba Strata DK40 - Page 115

RSTU Standard Telephone Interface Unit DK40 Universal Slot PCBs
Strata DK40 I&M Manual Spring 1999
3-25
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
RSTU
Standard Telephone Interface Unit
System:
DK40 Expansion KSU
Circuits per PCB:
eight standard telephone circuits
Interfaces with:
standard telephones
voice mail ports
off-premises stations
other similar devices
alternate BGM source (circuit 2 only)
auto attendant digital announcer
Compatible Slot(s):
slots 15 ~ 18
Older Version(s):
PSTU2–190V P-P or 130V P-P W1 jumper
Only one telephone (or device) can be connected to a RSTU2 port. If more than one
telephone or device is connected to a port ringing may not function.
Notes
● For the system to recognise the DTMF tones generated by a standard telephone (or
any other device connected to a standard telephone port), a DTMF Receiver Unit
(RK5RCU) must be installed on the DK40.
● Most standard telephones and two-wire devices require the 190V P-P level;
however, some devices may experience ring-trip with 190V P-P and should be set
for 130V P-P.
See Figure 3-12 for an illustration of the PSTU2. Figure 3-13 shows the RSTU2. See Table 3-
9, for details of the PSTU and RSTU2 controls and indicators.
R48S -48 Volt Supply Installation (Internal Option)
➤
Mate the R48S connectors P6 and P7 (Figure 3-11 and Figure 3-13) with the R48S
connectors P6 and P7 on the RSTU or RSTU.
Notes
● The R48S supplies an additional 24V (therefore giving 48V) to each two wire
circuit of the RSTU.
● RSTU connectors P6 and P7 are positioned so that the R48S only fits in the proper
position.
P6
P7
1374
Figure 3-11 R48S Interface Connectors