Strata CTX General Description 11/02 17
Universal Slot PCBs 4
Universal Printed Circuit Boards (PCBs) installed in the Strata CTX100 or CTX670 cabinets
provide interfaces for stations, lines, and peripherals. Each PCB measures 7.5 x 5.5 inches (190 x
140 mm) and mounts in the slot with a 44-pin backplane connector. PCB external connections to
station equipment are made to the Main Distribution Frame (MDF) using industry-standard
connectors.
Station, Line and Option PCBs
The PCBs are categorized as station, CO line or option PCBs (see Tables 14~16). Feature
subassemblies that plug onto a universal slot PCB, such as the Standard Telephone Interface
Subassembly (RSTS), are listed below the associated PCB. For further details, refer to the Strata
CTX I&M Manual.
Table 14 Station PCBs
Digital Telephone Interface Unit (ADKU) (CTX100 only)
Provides eight circuits for 3000 and/or 2000-series
digital telephones.
Interface Options: Provides the same interface options
as the BDKU (see below), but does not support BDKS.
Compatible only with CTX100.
Digital Telephone Interface Unit (BDKU)
Provides eight circuits for 3000 and/or 2000-series
digital telephones (BDKU) + eight more with BDKS
(optional).
Interface Options: Digital telephones (with or without
BHEU, BPCI, BVSU, DADMs, or digital cordless
telephone). Supports BDKS.
Stand-alone digital cordless telephone
DDSS console
BATI
DDCB
Supports large LCD (DKT3014) features.
Digital Telephone Interface Subassembly (BDKS)
Provides eight additional circuits for 3000 and/or 2000-
series digital telephones. Attaches to BDKU. One per
BDKU. Do not use BDKS for Speaker OCA
telephones, except in slot 103 of the CTX100.
Interface Options: Same as BDKU. Not compatible with
ADKU or PDKU.
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