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Strata CTX Configuration
Universal Slot PCBs
2-14 Strata CTX I&M 06/04
Universal Slot PCBs
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 2-8~2-10). Feature
subassemblies that plug onto a universal slot PCB, such as the Standard Telephone Interface
Subassembly (RSTS), are listed below the associated PCB.
Table 2-8 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.
Standard Telephone Interface Unit (ASTU) (CTX100 only)
Provides two standard telephone circuits. Maximum
number of ringers per circuit is three
Interface Options:
Standard telephones (no message waiting)
Other single-line devices
Alternate BGM source
Fax machines
Voice mail devices
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.
Digital Telephone Interface Unit (PDKU2)
Provides 8 digital telephone circuits. (2000-series
phones only. Do not use the PDKU for 3000-series
digital telephones. With 3000-series DKTs, the LCD
display is only 16 characters wide and the
Spdial button
will not work.
Interface Options: Digital telephones (with or without
BHEU or HHEU, DVSU, DADMs, or digital cordless
telephone)
Stand-alone digital cordless telephone
DDSS console
DDCB
Does not support DKT3014-SDL features.