Qstu2A Standard Telephone Interface Unit; Qstu2 Configuration; Qstu2 Installation - Toshiba Strata DK14 Installation And Maintenance Manual

QSTU2A
Standard Telephone Interface Unit
Circuits per PCB:
two standard telephone circuits
Interfaces with:
standard telephones
Auto Attendant devices
separate BGM source connection
voice mail machines
facsimile machines
Older Version(s):
QSTU1A
For the system to recognize the Dual-Tone Multi-Frequency (DTMF) tones generated by
Note
standard telephones (or any other device connected to a QSTU2 port), a QRCU3 must be
installed.
The QSTS2 PCB is factory-installed on the QSTU.

QSTU2 Configuration

The QSTU2 does not require configurations for the ring generator voltage level. Most standard
telephones and two-wire devices require 190; however, some devices may experience ring-trip at
190, and should be set at 130.

QSTU2 Installation

1. Make sure the power supply switch is OFF.
2. Align the QSTU2 connectors J1, J2, J3, and J4 to the motherboard connectors J11, J12, J13,
and J14 respectively. Apply firm, even pressure to ensure proper mating of the connectors (see
Figure 1-12).
Figure 1-12 QSTU2/QSTS2 Printed Circuit Boards
Strata DK I&M 5/99
J1 J4
J5 J6
190 130
SW1
QSTU2A
J3 J2
2393

QSTU2A Standard Telephone Interface Unit

QSTS2
(factory installed)
QSTU2
DK14 Installation
1-15