PCB Installation
BDKU/BDKS – Digital Telephone Interface Unit
4-4 Strata CTX I&M 10/02
BDKU/BDKS – Digital Telephone Interface Unit
Circuits per PCB: eight digital telephone circuits (plus eight more with the BDKS PCB)
Interfaces with: all Toshiba digital telephones (corded and cordless, DDCB, DSS, ADM, BPCI)
Older Version(s): none
BDKU Hardware Options
BDKU can be equipped with a BDKS piggyback PCB to provide a total of 16 circuits. Refer to
Chapter 8 – Station Apparatus for instructions on how to connect digital telephones, DDCBs, and
DDSS consoles to the BDKU/BDKS, as well as how to upgrade digital telephones with these
options: a PC Interface Unit (BPCI), a Speaker Off-hook Call Announce upgrade (BVSU), and a
Headset/External Speaker (BHEU). The BDKU can be installed alone, or with the BDKS
subassembly.
BDKS
The BDKS can be installed onto the BDKU to add eight more digital telephone circuits.
➤ To install the BDKS
➤ Match the BDKS connectors to the BDKU, as shown in Figure 4-2. Press firmly to ensure that
the connectors are snug.
BDKU Installation
1. Set the BDKU/PDKU switch for the appropriate system (refer to Figure 4-2 and Table 4-1).
2. Insert the BDKU2 (component side
facing right) into the appropriate slot,
and apply firm, even pressure to
ensure proper mating of connectors.
Refer to “Worksheet 6: Strata
CTX670 Cabinet Slot Configuration”
on page 1-36 to ensure the BDKU is
in a suitable slot.
3. Install the Ferrite Core (comes with
the BDKU) onto the 25-pair cable
that connects the BDKU to the MDF:
Flip open the two snaps on the Ferrite
Core, then snap it shut around the
BDKU cord as shown in Figure 4-1.
The core must be as close as possible
to the BDKU.
The core is needed to comply with
FCC requirements.
4. Some Ferrite Cores require a tie-wrap
at the bottom to keep it from sliding.
For those, feed the tie-wrap through
the slots in the Ferrite Core, then cinch it.
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Figure 4-1 BDKU Ferrite Core
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