Toshiba Strata DK 280 Installation Manual page 387

use Program *04, *09, *71 - *73, or 71 (1 - 3) as
required.
Each port assigned to the same Program 31 Voice
Mail Group should also be assigned to the same
distributed hunt group. Each Voice Mail Group should
be assigned to a unique (different) DH group.
Program *41 Series-T1 Span Assignments
Tl parameters and assignments are made with the
Program *41 series (along with the Program *42
series). The RCTUC/D common control unit can
support up to six RDTUs, and the RCTUB,
RCTUBA/BB unit can support up to two; and the
RCTUA cannot support the RDTU. (See Chapter 11
-Tl for additional Tl programming information.)
Program *41-l Tl Span Frame and Coding
Assignments
4 Tl Span Framing Assignments, LED 01-Each
RDTU PCB can be individually assigned for
Superframe or Extended Superframe. LED 01
should be off for Super-frame, or ON for Extended
Superframe.
n
Tl Span Line Code Assignments, LED 02-Each
RDTU PCB can be individually assigned for B8ZS
or AMI coding. LED 02 should be on for B8ZS, or
OFF for AMI.
Program *41-2 Tl Channel Assignments
RDTUs provide 8, 16, or 24 channels, each of which
can operate independently as CO lines (ground start
or loop start), tie lines (Wink or Immediate Start), or
DID lines (Wink or Immediate Start). Assign the
number of channels for each RDTU with Program 03.
IMPORTANT!
Program 91-2 must be run or System Power
must be momentarily turned OFF (5 seconds)
then ON for Program *41-2 to take effect.
Program *41-3, Tl Span Transmit Level Pad
Assignments
The transmission path of each RDTU can be set for
one of several PAD settings:
n
Enter 1 for +6 decibel (dB) padding
n
Enter 2 for +3 dB
n Enter 3 for 0 dB
n
Enter 4 for -3 dB
6 Enter 5 for -6 dB (initialized setting) .
q
Enter 6 for -9 dB
q
Enter 7 for -12 dB
n
Enter 8 for -15 dB
Program *41-4, Tl Span Receive Level Pad
Assignments
The receive level of each RDTU can be set for one of
several PAD settings
n
Enter 1 for +6 decibel (dB) padding
I
n
Enter 2 for +3 dB
n
Enter 3for 0 dB
n
Enter 4 for -3 dB (initialized setting)
H Enter 5 for -6 dB
w Enter 6 for -9 dB
n
Enter 7 for -12 dB
n
Enter 8 for -15 dB
Program *42 Series-T1 Span Timing Reference
Assignments
Timing references for Tl RDTU PCBs are made with
the Program *42 series. (Other RDTU parameters, are
made with the Program *41 series and Program 03.)
For proper Tl operation, the equipment at each end of
a Tl span line must be synchronized. The DK280 is
synchronized (as slave) to the equipment on the other
end of the Ti line by the RDTU PCB designated as
the Primary Reference in Program *42-l.
If a malfunction occurs and Primary Synchronization is
lost, the DK280 automatically switches modes and
synchronizes to the equipment connected to the
RDTU PCB designated as the Secondary Reference.
If the equipment on the other end of the DK280 Tl
lines should synchronize to the DK280 clock source,
then blanks should be entered in Program *42 1 and
2. In this case, the DK280 clock runs free and is
considered the Master Synchronization source. The
RCTUC/D common control unit can support up to six
RDTUs, and the the RCTUB, RCTUBA/BB unit can
support up to two. The RCTUA and RCTUA3 cannot
support the RDTU. (See the Tl Chapter of this manual
for more information on Program *42.)
January 1996
9-27