Toshiba Strata DK 280 Installation Manual page 160

Program 93-Assigns a name to a tie line.
4.13 Direct Inward Dialing Line
Interface Unit (RDDU)
The RDDU provides four Direct Inward Dialing (DID)
lines, each of which can have a single office code
along with a block of extensions. If an RDDU is
installed, an RRCS must be installed on the RCTU for
DTMF operation, but not for dial pulse operation. Each
extension can be assigned to ring a station
[DN]
that
appears on one or multiple stations, Distributed Hunt
or ACD Group, or an external telephone number
selected in system programming when using Release
3 software. This allows calls over the same line to be
routed to different stations or groups of stations. An
extension can also be assigned to ring the DK280
maintenance modem. Each RDDU can be set for
either Wink Start or Immediate. All RDDU lines
support DNIS and ANI features.
RDDU controls, indicators, and interface connectors
are shown in Figure 4-29 and described in
Table 4-22.
4.13.1 RDDU Hardware Options
There are no hardware options supported by the
RDDU.
4.13.2 RDDU Installation Procedures
Install the RDDU in accordance with the following
steps:
1. Remove the RDDU from its protective packaging.
Note:
The decibel (dB) PAD switches SW101
through S W40 I control excessive loudness
resulting from close proximity to a PBX or CO
telephone office by providing a -3 dB signal
level drop to, or from, the PBX or CO when
set to the 3 position. Switches are factory-set
to the 0 (0 dB signal level drop) position.
2. If the KSU is located within one mile of the PBX or
CO telephone office, set dB PAD switches SW101
through SW401 to the 3 (-3 dB signal level drop)
position.
Note:
Ensure the RDDU's component side is facing
right when installing it in the KSU.
3. Sensitivity jumpers PlOl - P401 are used mostly
for dial pulse operation, to adjust for dial pulsing at
different loop lengths. If close to the Central
Office, the sensitivity should be set for low (L); as
the loop length increases, it should be set to
medium (M), then high (H).
4. Insert the RDDU into the appropriate slot and
apply firm, even pressure to ensure proper mating
of connectors.
IMPORTANT!
Each RDDU PCB uses four station ports in
software, see Worksheet 2 of Chapter l-
Configuration for recommended RDDU slot
assignments.
4-44
January 1996
5. After installing the RDDU, gently pull the PCB
outward. If the connectors are properly mated, a
slight resistance will be felt.
4.13.3 RDDU Wiring
Refer to the RDDU wiring diagram in Chapter 7-
Wiring Diagrams for wiring/interconnecting and
secondary protector details.
4.13.4
RDDU Programming Overview
The following programming parameters may be
specified for the RDDU:
Program
03-Specify Code 16 for slots that will
support RDDUs and make sure RRCS is enabled for
DTMF operation.
Note:
"
Program 03 can be skipped, and Program 91
can be run instead.
Program
*09-Assigns DID line extensions to route to
station
[PDNs]
and IMDU or RMDS Remote
Maintenance (see Program 17 below).
Program
IO-l-Enables or disables Two-line
Conference.
Program
15-Assigns DTMF/Dial Pulse dialing, and
additional attributes to each line.
Program
*15-Makes tenant assignments.
Program
16-Assigns lines to line groups.
Program
*17-Assigns intercept port for DID calls to
wrong or vacant numbers.
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I