Toshiba Strata DK 280 Installation Manual page 154

4.11 Loop/Ground Start CO line
Interface Unit (RGLU)
The RGLU provides four CO line circuits which can be
configured individually for Loop Start or Ground Start.
The RGLU also provides ring detection, dial
outpulsing, and Hold. Each RGLU line can be
programmed for DTMF or dial pulse signaling and gas
tube secondary protection.
RGLU controls, indicators, and interface connectors
are shown in Figure 4-26 and described in Table
4-19.
4.11.1 RGLU Hardware Option
There are no hardware options supported by the
RGLU.
4.11.2 RGLU Installation Procedures
Install the RGLU in accordance with the following
procedure:
1.
Remove the PCB from its protective packaging.
Note:
The decibel (db) PAD switches SWlOl,
SWZOI, SW301, and SW401 control
excessive loudness resulting from close
proximity to a Central Office or PBX telephone
office by providing a -3db signal level drop to,
or from, the PBX or Central Office when set to
the 3 position. Switches are factory-set to the
0 (Odb signal level drop) position.
2. If the DK280 cabinets (DKSUB280 and
DKSUE280 or DKSUE424) are within one mile of
the PBX or Central Office, set the db PAD
switches SW101 (SW201, SW301, and SW401 to
the 3 (-3db signal level drop) position.
3. Set each line for Ground Start (GND) or Loop
Start (LOOP) by setting the following jumper
plugs: SW1 03 for line 1, SW203 for line 2, SW303
for line 3, and SW403 for line 4.
Note:
Ensure that the RGLU component side is
facing right when installing it in a cabinet.
4. Insert the RGLU into the appropriate slot and
apply firm, even pressure to ensure proper mating
of connectors.
5. After installing the RGLU, gently pull the PCB
outward. If the connectors are properly mated, a
slight resistance will be felt.
4.11.3 RCLU Wiring
Refer to the RGLU wiring diagram in Chapter 7-
Wiring Diagrams for wiring/interconnecting details.
4.11.4 RGLU Programming Overview
See Paragraph 5.8.4 (RCOU Programming Overview)
for an overview of RGLU programming (as well as
RCOU programming).
4-38
January 1996