Toshiba Strata AirLink DK40i, Installation And Maintenance Manual

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Universal Slot PCBs
RDTU – T1 Interface Unit
Strata DK I&M 6/00
9-43
Universal Slot PCBs
REMU – Tie Line Unit
System:
DK40i Expansion KSU, DK424, DK424i
Circuits per PCB:
four Tie line circuits
Interfaces with:
E&M Tie lines
2- or 4-wire transmission
Type I and II Signaling
Immediate and Wink Start
Older Version(s):
PEMU (Type I signaling & immediate start only,
does not provide PAD switches)
Tie lines can route per Program 04 [DN] assignments or Program 71 and 72 DNIS/ANI
assignments (see Program 17).
The REMU has four decibel (dB) PAD switches which can be set to reduce excessive loudness
resulting from close proximity to a central office or PBX by providing a -3 dB signal level drop to
the PBX or central office. (PAD is for Transmit and Receive for 2W operation, and Transmit only
is for 4W operation.)
Note
For the system to recognize the DTMF tones generated by incoming DID lines a DTMF
Receiver Unit (BRCS -4, -8, or -12) must be installed on the DK40i Base KSU K4RCU3
or on any DK424 or DK424i processor PCB.
BRCS is not required for REMU dial pulse operation (see Program 30, LED 11).
REMU controls, indicators, and interface connectors are shown in Figure 9-22 and described in
Table 9-15 .
PEMU controls, indicators, and interface connectors are shown in Figure 9-23 and described in
Table 9-16 .
REMU Installation
Important!
Each REMU decreases the maximum system CO lines by four. REMU circuits do not
use station ports with DK40i, DK424 or DK424i Release 4.0 and higher. See
Worksheets in
Chapter 2 – DK40i Configuration for recommended REMU slot
assignments.
1. Set the 2W/4W jumper plugs SW103~SW403 to the appropriate positions.
2. Set the P102/104, P202/204, P302/304, and P402/404 jumper plugs for Type 1 or Type 2
signaling.
3. If the system is located within one mile of the PBX or central office, set the REMU dB PAD
switches SW101, SW201, SW301, and SW401 to the 3 (-3 dB signal level drop) position.
4. Insert the REMU (component side facing right) into the appropriate slot and apply firm, even
pressure to ensure proper mating of connectors. (For DK40i, the REMU, PEMU can be
installed only in place of the RDDU per configuration chapter.)
5. After installing the REMU, gently pull it outward. If the connectors are properly mated, a
slight resistance is felt.